Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Nathan Scott | 4ce3121 | 2005-11-02 14:59:41 +1100 | [diff] [blame] | 2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
| 3 | * All Rights Reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * |
Nathan Scott | 4ce3121 | 2005-11-02 14:59:41 +1100 | [diff] [blame] | 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU General Public License as |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * published by the Free Software Foundation. |
| 8 | * |
Nathan Scott | 4ce3121 | 2005-11-02 14:59:41 +1100 | [diff] [blame] | 9 | * This program is distributed in the hope that it would be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * |
Nathan Scott | 4ce3121 | 2005-11-02 14:59:41 +1100 | [diff] [blame] | 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write the Free Software Foundation, |
| 16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | #include "xfs.h" |
| 19 | #include "xfs_fs.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 20 | #include "xfs_bit.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | #include "xfs_log.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 22 | #include "xfs_inum.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | #include "xfs_trans.h" |
| 24 | #include "xfs_sb.h" |
| 25 | #include "xfs_ag.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include "xfs_alloc.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include "xfs_quota.h" |
| 28 | #include "xfs_mount.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include "xfs_bmap_btree.h" |
| 30 | #include "xfs_ialloc_btree.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include "xfs_dinode.h" |
| 32 | #include "xfs_inode.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 33 | #include "xfs_ialloc.h" |
| 34 | #include "xfs_itable.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include "xfs_rtalloc.h" |
| 36 | #include "xfs_error.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 37 | #include "xfs_bmap.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | #include "xfs_attr.h" |
| 39 | #include "xfs_buf_item.h" |
| 40 | #include "xfs_trans_space.h" |
| 41 | #include "xfs_utils.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include "xfs_qm.h" |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 43 | #include "xfs_trace.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | |
| 45 | /* |
| 46 | * The global quota manager. There is only one of these for the entire |
| 47 | * system, _not_ one per file system. XQM keeps track of the overall |
| 48 | * quota functionality, including maintaining the freelist and hash |
| 49 | * tables of dquots. |
| 50 | */ |
Christoph Hellwig | a0b0b8a | 2009-03-29 09:51:00 +0200 | [diff] [blame] | 51 | struct mutex xfs_Gqm_lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | struct xfs_qm *xfs_Gqm; |
Nathan Scott | 6b3f6b5 | 2005-11-02 15:08:25 +1100 | [diff] [blame] | 53 | uint ndquot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | |
| 55 | kmem_zone_t *qm_dqzone; |
| 56 | kmem_zone_t *qm_dqtrxzone; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | |
| 58 | STATIC void xfs_qm_list_init(xfs_dqlist_t *, char *, int); |
| 59 | STATIC void xfs_qm_list_destroy(xfs_dqlist_t *); |
| 60 | |
| 61 | STATIC int xfs_qm_init_quotainos(xfs_mount_t *); |
Christoph Hellwig | ba0f32d | 2005-06-21 15:36:52 +1000 | [diff] [blame] | 62 | STATIC int xfs_qm_init_quotainfo(xfs_mount_t *); |
Ying Han | 1495f23 | 2011-05-24 17:12:27 -0700 | [diff] [blame] | 63 | STATIC int xfs_qm_shake(struct shrinker *, struct shrink_control *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | |
Rusty Russell | 8e1f936 | 2007-07-17 04:03:17 -0700 | [diff] [blame] | 65 | static struct shrinker xfs_qm_shaker = { |
| 66 | .shrink = xfs_qm_shake, |
| 67 | .seeks = DEFAULT_SEEKS, |
| 68 | }; |
| 69 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | /* |
| 71 | * Initialize the XQM structure. |
| 72 | * Note that there is not one quota manager per file system. |
| 73 | */ |
| 74 | STATIC struct xfs_qm * |
| 75 | xfs_Gqm_init(void) |
| 76 | { |
Nathan Scott | 6b3f6b5 | 2005-11-02 15:08:25 +1100 | [diff] [blame] | 77 | xfs_dqhash_t *udqhash, *gdqhash; |
| 78 | xfs_qm_t *xqm; |
Nathan Scott | 215101c | 2006-09-28 11:04:43 +1000 | [diff] [blame] | 79 | size_t hsize; |
| 80 | uint i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | |
| 82 | /* |
| 83 | * Initialize the dquot hash tables. |
| 84 | */ |
Nathan Scott | 77e4635 | 2006-09-28 11:03:27 +1000 | [diff] [blame] | 85 | udqhash = kmem_zalloc_greedy(&hsize, |
Eric Sandeen | 5995cb7 | 2007-08-16 16:49:11 +1000 | [diff] [blame] | 86 | XFS_QM_HASHSIZE_LOW * sizeof(xfs_dqhash_t), |
Christoph Hellwig | bdfb043 | 2010-01-20 21:55:30 +0000 | [diff] [blame] | 87 | XFS_QM_HASHSIZE_HIGH * sizeof(xfs_dqhash_t)); |
| 88 | if (!udqhash) |
| 89 | goto out; |
| 90 | |
| 91 | gdqhash = kmem_zalloc_large(hsize); |
Julia Lawall | d67b1b0 | 2010-02-06 08:45:15 +0000 | [diff] [blame] | 92 | if (!gdqhash) |
Christoph Hellwig | bdfb043 | 2010-01-20 21:55:30 +0000 | [diff] [blame] | 93 | goto out_free_udqhash; |
| 94 | |
Nathan Scott | 77e4635 | 2006-09-28 11:03:27 +1000 | [diff] [blame] | 95 | hsize /= sizeof(xfs_dqhash_t); |
Nathan Scott | 6b3f6b5 | 2005-11-02 15:08:25 +1100 | [diff] [blame] | 96 | ndquot = hsize << 8; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | |
Nathan Scott | 6b3f6b5 | 2005-11-02 15:08:25 +1100 | [diff] [blame] | 98 | xqm = kmem_zalloc(sizeof(xfs_qm_t), KM_SLEEP); |
| 99 | xqm->qm_dqhashmask = hsize - 1; |
| 100 | xqm->qm_usr_dqhtable = udqhash; |
| 101 | xqm->qm_grp_dqhtable = gdqhash; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | ASSERT(xqm->qm_usr_dqhtable != NULL); |
| 103 | ASSERT(xqm->qm_grp_dqhtable != NULL); |
| 104 | |
| 105 | for (i = 0; i < hsize; i++) { |
| 106 | xfs_qm_list_init(&(xqm->qm_usr_dqhtable[i]), "uxdqh", i); |
| 107 | xfs_qm_list_init(&(xqm->qm_grp_dqhtable[i]), "gxdqh", i); |
| 108 | } |
| 109 | |
| 110 | /* |
| 111 | * Freelist of all dquots of all file systems |
| 112 | */ |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 113 | INIT_LIST_HEAD(&xqm->qm_dqfrlist); |
| 114 | xqm->qm_dqfrlist_cnt = 0; |
| 115 | mutex_init(&xqm->qm_dqfrlist_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | |
| 117 | /* |
| 118 | * dquot zone. we register our own low-memory callback. |
| 119 | */ |
| 120 | if (!qm_dqzone) { |
| 121 | xqm->qm_dqzone = kmem_zone_init(sizeof(xfs_dquot_t), |
| 122 | "xfs_dquots"); |
| 123 | qm_dqzone = xqm->qm_dqzone; |
| 124 | } else |
| 125 | xqm->qm_dqzone = qm_dqzone; |
| 126 | |
Rusty Russell | 8e1f936 | 2007-07-17 04:03:17 -0700 | [diff] [blame] | 127 | register_shrinker(&xfs_qm_shaker); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | |
| 129 | /* |
| 130 | * The t_dqinfo portion of transactions. |
| 131 | */ |
| 132 | if (!qm_dqtrxzone) { |
| 133 | xqm->qm_dqtrxzone = kmem_zone_init(sizeof(xfs_dquot_acct_t), |
| 134 | "xfs_dqtrx"); |
| 135 | qm_dqtrxzone = xqm->qm_dqtrxzone; |
| 136 | } else |
| 137 | xqm->qm_dqtrxzone = qm_dqtrxzone; |
| 138 | |
| 139 | atomic_set(&xqm->qm_totaldquots, 0); |
| 140 | xqm->qm_dqfree_ratio = XFS_QM_DQFREE_RATIO; |
| 141 | xqm->qm_nrefs = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | return xqm; |
Christoph Hellwig | bdfb043 | 2010-01-20 21:55:30 +0000 | [diff] [blame] | 143 | |
| 144 | out_free_udqhash: |
| 145 | kmem_free_large(udqhash); |
| 146 | out: |
| 147 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | } |
| 149 | |
| 150 | /* |
| 151 | * Destroy the global quota manager when its reference count goes to zero. |
| 152 | */ |
Christoph Hellwig | ba0f32d | 2005-06-21 15:36:52 +1000 | [diff] [blame] | 153 | STATIC void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | xfs_qm_destroy( |
| 155 | struct xfs_qm *xqm) |
| 156 | { |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 157 | struct xfs_dquot *dqp, *n; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | int hsize, i; |
| 159 | |
| 160 | ASSERT(xqm != NULL); |
| 161 | ASSERT(xqm->qm_nrefs == 0); |
Rusty Russell | 8e1f936 | 2007-07-17 04:03:17 -0700 | [diff] [blame] | 162 | unregister_shrinker(&xfs_qm_shaker); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | hsize = xqm->qm_dqhashmask + 1; |
| 164 | for (i = 0; i < hsize; i++) { |
| 165 | xfs_qm_list_destroy(&(xqm->qm_usr_dqhtable[i])); |
| 166 | xfs_qm_list_destroy(&(xqm->qm_grp_dqhtable[i])); |
| 167 | } |
Christoph Hellwig | bdfb043 | 2010-01-20 21:55:30 +0000 | [diff] [blame] | 168 | kmem_free_large(xqm->qm_usr_dqhtable); |
| 169 | kmem_free_large(xqm->qm_grp_dqhtable); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | xqm->qm_usr_dqhtable = NULL; |
| 171 | xqm->qm_grp_dqhtable = NULL; |
| 172 | xqm->qm_dqhashmask = 0; |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 173 | |
| 174 | /* frlist cleanup */ |
| 175 | mutex_lock(&xqm->qm_dqfrlist_lock); |
| 176 | list_for_each_entry_safe(dqp, n, &xqm->qm_dqfrlist, q_freelist) { |
| 177 | xfs_dqlock(dqp); |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 178 | list_del_init(&dqp->q_freelist); |
| 179 | xfs_Gqm->qm_dqfrlist_cnt--; |
| 180 | xfs_dqunlock(dqp); |
| 181 | xfs_qm_dqdestroy(dqp); |
| 182 | } |
| 183 | mutex_unlock(&xqm->qm_dqfrlist_lock); |
| 184 | mutex_destroy(&xqm->qm_dqfrlist_lock); |
Denys Vlasenko | f0e2d93 | 2008-05-19 16:31:57 +1000 | [diff] [blame] | 185 | kmem_free(xqm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | } |
| 187 | |
| 188 | /* |
| 189 | * Called at mount time to let XQM know that another file system is |
| 190 | * starting quotas. This isn't crucial information as the individual mount |
| 191 | * structures are pretty independent, but it helps the XQM keep a |
| 192 | * global view of what's going on. |
| 193 | */ |
| 194 | /* ARGSUSED */ |
| 195 | STATIC int |
| 196 | xfs_qm_hold_quotafs_ref( |
| 197 | struct xfs_mount *mp) |
| 198 | { |
| 199 | /* |
| 200 | * Need to lock the xfs_Gqm structure for things like this. For example, |
| 201 | * the structure could disappear between the entry to this routine and |
| 202 | * a HOLD operation if not locked. |
| 203 | */ |
Christoph Hellwig | e249458 | 2009-02-09 08:38:39 +0100 | [diff] [blame] | 204 | mutex_lock(&xfs_Gqm_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | |
Christoph Hellwig | bdfb043 | 2010-01-20 21:55:30 +0000 | [diff] [blame] | 206 | if (!xfs_Gqm) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | xfs_Gqm = xfs_Gqm_init(); |
Julia Lawall | 38e712a | 2010-05-26 15:57:23 +0000 | [diff] [blame] | 208 | if (!xfs_Gqm) { |
| 209 | mutex_unlock(&xfs_Gqm_lock); |
Christoph Hellwig | bdfb043 | 2010-01-20 21:55:30 +0000 | [diff] [blame] | 210 | return ENOMEM; |
Julia Lawall | 38e712a | 2010-05-26 15:57:23 +0000 | [diff] [blame] | 211 | } |
Christoph Hellwig | bdfb043 | 2010-01-20 21:55:30 +0000 | [diff] [blame] | 212 | } |
| 213 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | /* |
| 215 | * We can keep a list of all filesystems with quotas mounted for |
| 216 | * debugging and statistical purposes, but ... |
| 217 | * Just take a reference and get out. |
| 218 | */ |
Christoph Hellwig | e249458 | 2009-02-09 08:38:39 +0100 | [diff] [blame] | 219 | xfs_Gqm->qm_nrefs++; |
| 220 | mutex_unlock(&xfs_Gqm_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | |
| 222 | return 0; |
| 223 | } |
| 224 | |
| 225 | |
| 226 | /* |
| 227 | * Release the reference that a filesystem took at mount time, |
| 228 | * so that we know when we need to destroy the entire quota manager. |
| 229 | */ |
| 230 | /* ARGSUSED */ |
| 231 | STATIC void |
| 232 | xfs_qm_rele_quotafs_ref( |
| 233 | struct xfs_mount *mp) |
| 234 | { |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 235 | xfs_dquot_t *dqp, *n; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | |
| 237 | ASSERT(xfs_Gqm); |
| 238 | ASSERT(xfs_Gqm->qm_nrefs > 0); |
| 239 | |
| 240 | /* |
| 241 | * Go thru the freelist and destroy all inactive dquots. |
| 242 | */ |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 243 | mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 245 | list_for_each_entry_safe(dqp, n, &xfs_Gqm->qm_dqfrlist, q_freelist) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | xfs_dqlock(dqp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | if (dqp->dq_flags & XFS_DQ_INACTIVE) { |
| 248 | ASSERT(dqp->q_mount == NULL); |
| 249 | ASSERT(! XFS_DQ_IS_DIRTY(dqp)); |
Dave Chinner | e6a81f1 | 2010-04-13 15:06:51 +1000 | [diff] [blame] | 250 | ASSERT(list_empty(&dqp->q_hashlist)); |
Dave Chinner | 3a25404 | 2010-04-13 15:06:48 +1000 | [diff] [blame] | 251 | ASSERT(list_empty(&dqp->q_mplist)); |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 252 | list_del_init(&dqp->q_freelist); |
| 253 | xfs_Gqm->qm_dqfrlist_cnt--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | xfs_dqunlock(dqp); |
| 255 | xfs_qm_dqdestroy(dqp); |
| 256 | } else { |
| 257 | xfs_dqunlock(dqp); |
| 258 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | } |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 260 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | |
| 262 | /* |
| 263 | * Destroy the entire XQM. If somebody mounts with quotaon, this'll |
| 264 | * be restarted. |
| 265 | */ |
Christoph Hellwig | e249458 | 2009-02-09 08:38:39 +0100 | [diff] [blame] | 266 | mutex_lock(&xfs_Gqm_lock); |
| 267 | if (--xfs_Gqm->qm_nrefs == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | xfs_qm_destroy(xfs_Gqm); |
| 269 | xfs_Gqm = NULL; |
| 270 | } |
Christoph Hellwig | e249458 | 2009-02-09 08:38:39 +0100 | [diff] [blame] | 271 | mutex_unlock(&xfs_Gqm_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | } |
| 273 | |
| 274 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | * Just destroy the quotainfo structure. |
| 276 | */ |
| 277 | void |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 278 | xfs_qm_unmount( |
| 279 | struct xfs_mount *mp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | { |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 281 | if (mp->m_quotainfo) { |
Christoph Hellwig | 8112e9d | 2010-04-20 17:02:29 +1000 | [diff] [blame] | 282 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | xfs_qm_destroy_quotainfo(mp); |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 284 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | } |
| 286 | |
| 287 | |
| 288 | /* |
| 289 | * This is called from xfs_mountfs to start quotas and initialize all |
| 290 | * necessary data structures like quotainfo. This is also responsible for |
| 291 | * running a quotacheck as necessary. We are guaranteed that the superblock |
| 292 | * is consistently read in at this point. |
David Chinner | 53aa791 | 2008-04-10 12:20:31 +1000 | [diff] [blame] | 293 | * |
| 294 | * If we fail here, the mount will continue with quota turned off. We don't |
| 295 | * need to inidicate success or failure at all. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | */ |
David Chinner | 53aa791 | 2008-04-10 12:20:31 +1000 | [diff] [blame] | 297 | void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | xfs_qm_mount_quotas( |
Christoph Hellwig | 4249023 | 2008-08-13 16:49:32 +1000 | [diff] [blame] | 299 | xfs_mount_t *mp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | int error = 0; |
| 302 | uint sbf; |
| 303 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | /* |
| 305 | * If quotas on realtime volumes is not supported, we disable |
| 306 | * quotas immediately. |
| 307 | */ |
| 308 | if (mp->m_sb.sb_rextents) { |
Dave Chinner | 0b932cc | 2011-03-07 10:08:35 +1100 | [diff] [blame] | 309 | xfs_notice(mp, "Cannot turn on quotas for realtime filesystem"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | mp->m_qflags = 0; |
| 311 | goto write_changes; |
| 312 | } |
| 313 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
Nathan Scott | 155ffd0 | 2005-09-02 16:43:48 +1000 | [diff] [blame] | 315 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | /* |
| 317 | * Allocate the quotainfo structure inside the mount struct, and |
| 318 | * create quotainode(s), and change/rev superblock if necessary. |
| 319 | */ |
David Chinner | 53aa791 | 2008-04-10 12:20:31 +1000 | [diff] [blame] | 320 | error = xfs_qm_init_quotainfo(mp); |
| 321 | if (error) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | /* |
| 323 | * We must turn off quotas. |
| 324 | */ |
| 325 | ASSERT(mp->m_quotainfo == NULL); |
| 326 | mp->m_qflags = 0; |
| 327 | goto write_changes; |
| 328 | } |
| 329 | /* |
| 330 | * If any of the quotas are not consistent, do a quotacheck. |
| 331 | */ |
Christoph Hellwig | 4249023 | 2008-08-13 16:49:32 +1000 | [diff] [blame] | 332 | if (XFS_QM_NEED_QUOTACHECK(mp)) { |
David Chinner | 53aa791 | 2008-04-10 12:20:31 +1000 | [diff] [blame] | 333 | error = xfs_qm_quotacheck(mp); |
| 334 | if (error) { |
| 335 | /* Quotacheck failed and disabled quotas. */ |
| 336 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | } |
Donald Douwsma | 646d5bd | 2007-05-08 13:49:09 +1000 | [diff] [blame] | 339 | /* |
| 340 | * If one type of quotas is off, then it will lose its |
| 341 | * quotachecked status, since we won't be doing accounting for |
| 342 | * that type anymore. |
| 343 | */ |
David Chinner | 53aa791 | 2008-04-10 12:20:31 +1000 | [diff] [blame] | 344 | if (!XFS_IS_UQUOTA_ON(mp)) |
Donald Douwsma | 646d5bd | 2007-05-08 13:49:09 +1000 | [diff] [blame] | 345 | mp->m_qflags &= ~XFS_UQUOTA_CHKD; |
David Chinner | 53aa791 | 2008-04-10 12:20:31 +1000 | [diff] [blame] | 346 | if (!(XFS_IS_GQUOTA_ON(mp) || XFS_IS_PQUOTA_ON(mp))) |
Donald Douwsma | 646d5bd | 2007-05-08 13:49:09 +1000 | [diff] [blame] | 347 | mp->m_qflags &= ~XFS_OQUOTA_CHKD; |
Nathan Scott | 155ffd0 | 2005-09-02 16:43:48 +1000 | [diff] [blame] | 348 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | write_changes: |
| 350 | /* |
Eric Sandeen | 3685c2a | 2007-10-11 17:42:32 +1000 | [diff] [blame] | 351 | * We actually don't have to acquire the m_sb_lock at all. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | * This can only be called from mount, and that's single threaded. XXX |
| 353 | */ |
Eric Sandeen | 3685c2a | 2007-10-11 17:42:32 +1000 | [diff] [blame] | 354 | spin_lock(&mp->m_sb_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | sbf = mp->m_sb.sb_qflags; |
| 356 | mp->m_sb.sb_qflags = mp->m_qflags & XFS_MOUNT_QUOTA_ALL; |
Eric Sandeen | 3685c2a | 2007-10-11 17:42:32 +1000 | [diff] [blame] | 357 | spin_unlock(&mp->m_sb_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | |
| 359 | if (sbf != (mp->m_qflags & XFS_MOUNT_QUOTA_ALL)) { |
| 360 | if (xfs_qm_write_sb_changes(mp, XFS_SB_QFLAGS)) { |
| 361 | /* |
| 362 | * We could only have been turning quotas off. |
| 363 | * We aren't in very good shape actually because |
| 364 | * the incore structures are convinced that quotas are |
| 365 | * off, but the on disk superblock doesn't know that ! |
| 366 | */ |
| 367 | ASSERT(!(XFS_IS_QUOTA_RUNNING(mp))); |
Dave Chinner | 5348778 | 2011-03-07 10:05:35 +1100 | [diff] [blame] | 368 | xfs_alert(mp, "%s: Superblock update failed!", |
| 369 | __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | } |
| 371 | } |
| 372 | |
| 373 | if (error) { |
Dave Chinner | 5348778 | 2011-03-07 10:05:35 +1100 | [diff] [blame] | 374 | xfs_warn(mp, "Failed to initialize disk quotas."); |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 375 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | } |
| 378 | |
| 379 | /* |
| 380 | * Called from the vfsops layer. |
| 381 | */ |
Christoph Hellwig | e57481d | 2008-12-03 12:20:36 +0100 | [diff] [blame] | 382 | void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | xfs_qm_unmount_quotas( |
| 384 | xfs_mount_t *mp) |
| 385 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | /* |
| 387 | * Release the dquots that root inode, et al might be holding, |
| 388 | * before we flush quotas and blow away the quotainfo structure. |
| 389 | */ |
| 390 | ASSERT(mp->m_rootip); |
| 391 | xfs_qm_dqdetach(mp->m_rootip); |
| 392 | if (mp->m_rbmip) |
| 393 | xfs_qm_dqdetach(mp->m_rbmip); |
| 394 | if (mp->m_rsumip) |
| 395 | xfs_qm_dqdetach(mp->m_rsumip); |
| 396 | |
| 397 | /* |
Christoph Hellwig | e57481d | 2008-12-03 12:20:36 +0100 | [diff] [blame] | 398 | * Release the quota inodes. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | if (mp->m_quotainfo) { |
Christoph Hellwig | e57481d | 2008-12-03 12:20:36 +0100 | [diff] [blame] | 401 | if (mp->m_quotainfo->qi_uquotaip) { |
| 402 | IRELE(mp->m_quotainfo->qi_uquotaip); |
| 403 | mp->m_quotainfo->qi_uquotaip = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | } |
Christoph Hellwig | e57481d | 2008-12-03 12:20:36 +0100 | [diff] [blame] | 405 | if (mp->m_quotainfo->qi_gquotaip) { |
| 406 | IRELE(mp->m_quotainfo->qi_gquotaip); |
| 407 | mp->m_quotainfo->qi_gquotaip = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | } |
| 409 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | } |
| 411 | |
| 412 | /* |
| 413 | * Flush all dquots of the given file system to disk. The dquots are |
| 414 | * _not_ purged from memory here, just their data written to disk. |
| 415 | */ |
Christoph Hellwig | ba0f32d | 2005-06-21 15:36:52 +1000 | [diff] [blame] | 416 | STATIC int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | xfs_qm_dqflush_all( |
Christoph Hellwig | a7ef9bd | 2011-12-06 21:58:13 +0000 | [diff] [blame^] | 418 | struct xfs_mount *mp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | { |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 420 | struct xfs_quotainfo *q = mp->m_quotainfo; |
| 421 | int recl; |
| 422 | struct xfs_dquot *dqp; |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 423 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 425 | if (!q) |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 426 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | again: |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 428 | mutex_lock(&q->qi_dqlist_lock); |
| 429 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | xfs_dqlock(dqp); |
| 431 | if (! XFS_DQ_IS_DIRTY(dqp)) { |
| 432 | xfs_dqunlock(dqp); |
| 433 | continue; |
| 434 | } |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 435 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | /* XXX a sentinel would be better */ |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 437 | recl = q->qi_dqreclaims; |
David Chinner | e1f49cf | 2008-08-13 16:41:43 +1000 | [diff] [blame] | 438 | if (!xfs_dqflock_nowait(dqp)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | /* |
| 440 | * If we can't grab the flush lock then check |
| 441 | * to see if the dquot has been flushed delayed |
| 442 | * write. If so, grab its buffer and send it |
| 443 | * out immediately. We'll be able to acquire |
| 444 | * the flush lock when the I/O completes. |
| 445 | */ |
| 446 | xfs_qm_dqflock_pushbuf_wait(dqp); |
| 447 | } |
| 448 | /* |
| 449 | * Let go of the mplist lock. We don't want to hold it |
| 450 | * across a disk write. |
| 451 | */ |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 452 | mutex_unlock(&q->qi_dqlist_lock); |
Christoph Hellwig | a7ef9bd | 2011-12-06 21:58:13 +0000 | [diff] [blame^] | 453 | error = xfs_qm_dqflush(dqp, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | xfs_dqunlock(dqp); |
| 455 | if (error) |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 456 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 458 | mutex_lock(&q->qi_dqlist_lock); |
| 459 | if (recl != q->qi_dqreclaims) { |
| 460 | mutex_unlock(&q->qi_dqlist_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | /* XXX restart limit */ |
| 462 | goto again; |
| 463 | } |
| 464 | } |
| 465 | |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 466 | mutex_unlock(&q->qi_dqlist_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | /* return ! busy */ |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 468 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | } |
| 470 | /* |
| 471 | * Release the group dquot pointers the user dquots may be |
| 472 | * carrying around as a hint. mplist is locked on entry and exit. |
| 473 | */ |
| 474 | STATIC void |
| 475 | xfs_qm_detach_gdquots( |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 476 | struct xfs_mount *mp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | { |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 478 | struct xfs_quotainfo *q = mp->m_quotainfo; |
| 479 | struct xfs_dquot *dqp, *gdqp; |
| 480 | int nrecl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | |
| 482 | again: |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 483 | ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); |
| 484 | list_for_each_entry(dqp, &q->qi_dqlist, q_mplist) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | xfs_dqlock(dqp); |
| 486 | if ((gdqp = dqp->q_gdquot)) { |
| 487 | xfs_dqlock(gdqp); |
| 488 | dqp->q_gdquot = NULL; |
| 489 | } |
| 490 | xfs_dqunlock(dqp); |
| 491 | |
| 492 | if (gdqp) { |
| 493 | /* |
| 494 | * Can't hold the mplist lock across a dqput. |
| 495 | * XXXmust convert to marker based iterations here. |
| 496 | */ |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 497 | nrecl = q->qi_dqreclaims; |
| 498 | mutex_unlock(&q->qi_dqlist_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | xfs_qm_dqput(gdqp); |
| 500 | |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 501 | mutex_lock(&q->qi_dqlist_lock); |
| 502 | if (nrecl != q->qi_dqreclaims) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | goto again; |
| 504 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | } |
| 506 | } |
| 507 | |
| 508 | /* |
| 509 | * Go through all the incore dquots of this file system and take them |
| 510 | * off the mplist and hashlist, if the dquot type matches the dqtype |
| 511 | * parameter. This is used when turning off quota accounting for |
| 512 | * users and/or groups, as well as when the filesystem is unmounting. |
| 513 | */ |
| 514 | STATIC int |
| 515 | xfs_qm_dqpurge_int( |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 516 | struct xfs_mount *mp, |
| 517 | uint flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | { |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 519 | struct xfs_quotainfo *q = mp->m_quotainfo; |
| 520 | struct xfs_dquot *dqp, *n; |
| 521 | uint dqtype; |
| 522 | int nrecl; |
| 523 | int nmisses; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 525 | if (!q) |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 526 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | |
| 528 | dqtype = (flags & XFS_QMOPT_UQUOTA) ? XFS_DQ_USER : 0; |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 529 | dqtype |= (flags & XFS_QMOPT_PQUOTA) ? XFS_DQ_PROJ : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | dqtype |= (flags & XFS_QMOPT_GQUOTA) ? XFS_DQ_GROUP : 0; |
| 531 | |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 532 | mutex_lock(&q->qi_dqlist_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | |
| 534 | /* |
| 535 | * In the first pass through all incore dquots of this filesystem, |
| 536 | * we release the group dquot pointers the user dquots may be |
| 537 | * carrying around as a hint. We need to do this irrespective of |
| 538 | * what's being turned off. |
| 539 | */ |
| 540 | xfs_qm_detach_gdquots(mp); |
| 541 | |
| 542 | again: |
| 543 | nmisses = 0; |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 544 | ASSERT(mutex_is_locked(&q->qi_dqlist_lock)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | /* |
| 546 | * Try to get rid of all of the unwanted dquots. The idea is to |
| 547 | * get them off mplist and hashlist, but leave them on freelist. |
| 548 | */ |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 549 | list_for_each_entry_safe(dqp, n, &q->qi_dqlist, q_mplist) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | /* |
| 551 | * It's OK to look at the type without taking dqlock here. |
| 552 | * We're holding the mplist lock here, and that's needed for |
| 553 | * a dqreclaim. |
| 554 | */ |
Dave Chinner | 3a25404 | 2010-04-13 15:06:48 +1000 | [diff] [blame] | 555 | if ((dqp->dq_flags & dqtype) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | |
Christoph Hellwig | c9a192d | 2009-02-09 08:47:22 +0100 | [diff] [blame] | 558 | if (!mutex_trylock(&dqp->q_hash->qh_lock)) { |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 559 | nrecl = q->qi_dqreclaims; |
| 560 | mutex_unlock(&q->qi_dqlist_lock); |
Christoph Hellwig | c9a192d | 2009-02-09 08:47:22 +0100 | [diff] [blame] | 561 | mutex_lock(&dqp->q_hash->qh_lock); |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 562 | mutex_lock(&q->qi_dqlist_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | |
| 564 | /* |
| 565 | * XXXTheoretically, we can get into a very long |
| 566 | * ping pong game here. |
| 567 | * No one can be adding dquots to the mplist at |
| 568 | * this point, but somebody might be taking things off. |
| 569 | */ |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 570 | if (nrecl != q->qi_dqreclaims) { |
Christoph Hellwig | c9a192d | 2009-02-09 08:47:22 +0100 | [diff] [blame] | 571 | mutex_unlock(&dqp->q_hash->qh_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | goto again; |
| 573 | } |
| 574 | } |
| 575 | |
| 576 | /* |
| 577 | * Take the dquot off the mplist and hashlist. It may remain on |
| 578 | * freelist in INACTIVE state. |
| 579 | */ |
Denys Vlasenko | 4f0e8a9 | 2008-05-19 16:34:04 +1000 | [diff] [blame] | 580 | nmisses += xfs_qm_dqpurge(dqp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | } |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 582 | mutex_unlock(&q->qi_dqlist_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | return nmisses; |
| 584 | } |
| 585 | |
| 586 | int |
| 587 | xfs_qm_dqpurge_all( |
| 588 | xfs_mount_t *mp, |
| 589 | uint flags) |
| 590 | { |
| 591 | int ndquots; |
| 592 | |
| 593 | /* |
| 594 | * Purge the dquot cache. |
| 595 | * None of the dquots should really be busy at this point. |
| 596 | */ |
| 597 | if (mp->m_quotainfo) { |
| 598 | while ((ndquots = xfs_qm_dqpurge_int(mp, flags))) { |
| 599 | delay(ndquots * 10); |
| 600 | } |
| 601 | } |
| 602 | return 0; |
| 603 | } |
| 604 | |
| 605 | STATIC int |
| 606 | xfs_qm_dqattach_one( |
| 607 | xfs_inode_t *ip, |
| 608 | xfs_dqid_t id, |
| 609 | uint type, |
| 610 | uint doalloc, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | xfs_dquot_t *udqhint, /* hint */ |
| 612 | xfs_dquot_t **IO_idqpp) |
| 613 | { |
| 614 | xfs_dquot_t *dqp; |
| 615 | int error; |
| 616 | |
Christoph Hellwig | 579aa9c | 2008-04-22 17:34:00 +1000 | [diff] [blame] | 617 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | error = 0; |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 619 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | /* |
| 621 | * See if we already have it in the inode itself. IO_idqpp is |
| 622 | * &i_udquot or &i_gdquot. This made the code look weird, but |
| 623 | * made the logic a lot simpler. |
| 624 | */ |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 625 | dqp = *IO_idqpp; |
| 626 | if (dqp) { |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 627 | trace_xfs_dqattach_found(dqp); |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 628 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | } |
| 630 | |
| 631 | /* |
| 632 | * udqhint is the i_udquot field in inode, and is non-NULL only |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 633 | * when the type arg is group/project. Its purpose is to save a |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside |
| 635 | * the user dquot. |
| 636 | */ |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 637 | if (udqhint) { |
| 638 | ASSERT(type == XFS_DQ_GROUP || type == XFS_DQ_PROJ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | xfs_dqlock(udqhint); |
| 640 | |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 641 | /* |
| 642 | * No need to take dqlock to look at the id. |
| 643 | * |
| 644 | * The ID can't change until it gets reclaimed, and it won't |
| 645 | * be reclaimed as long as we have a ref from inode and we |
| 646 | * hold the ilock. |
| 647 | */ |
| 648 | dqp = udqhint->q_gdquot; |
| 649 | if (dqp && be32_to_cpu(dqp->q_core.d_id) == id) { |
| 650 | xfs_dqlock(dqp); |
| 651 | XFS_DQHOLD(dqp); |
| 652 | ASSERT(*IO_idqpp == NULL); |
| 653 | *IO_idqpp = dqp; |
| 654 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | xfs_dqunlock(dqp); |
| 656 | xfs_dqunlock(udqhint); |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 657 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | } |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 659 | |
| 660 | /* |
| 661 | * We can't hold a dquot lock when we call the dqget code. |
| 662 | * We'll deadlock in no time, because of (not conforming to) |
| 663 | * lock ordering - the inodelock comes before any dquot lock, |
| 664 | * and we may drop and reacquire the ilock in xfs_qm_dqget(). |
| 665 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | xfs_dqunlock(udqhint); |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 667 | } |
| 668 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | /* |
| 670 | * Find the dquot from somewhere. This bumps the |
| 671 | * reference count of dquot and returns it locked. |
| 672 | * This can return ENOENT if dquot didn't exist on |
| 673 | * disk and we didn't ask it to allocate; |
| 674 | * ESRCH if quotas got turned off suddenly. |
| 675 | */ |
Mitsuo Hayasaka | db3e74b | 2011-11-10 01:33:10 +0000 | [diff] [blame] | 676 | error = xfs_qm_dqget(ip->i_mount, ip, id, type, |
| 677 | doalloc | XFS_QMOPT_DOWARN, &dqp); |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 678 | if (error) |
| 679 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 681 | trace_xfs_dqattach_get(dqp); |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 682 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | /* |
| 684 | * dqget may have dropped and re-acquired the ilock, but it guarantees |
| 685 | * that the dquot returned is the one that should go in the inode. |
| 686 | */ |
| 687 | *IO_idqpp = dqp; |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 688 | xfs_dqunlock(dqp); |
| 689 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | } |
| 691 | |
| 692 | |
| 693 | /* |
| 694 | * Given a udquot and gdquot, attach a ptr to the group dquot in the |
| 695 | * udquot as a hint for future lookups. The idea sounds simple, but the |
| 696 | * execution isn't, because the udquot might have a group dquot attached |
Nathan Scott | c41564b | 2006-03-29 08:55:14 +1000 | [diff] [blame] | 697 | * already and getting rid of that gets us into lock ordering constraints. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | * The process is complicated more by the fact that the dquots may or may not |
| 699 | * be locked on entry. |
| 700 | */ |
| 701 | STATIC void |
| 702 | xfs_qm_dqattach_grouphint( |
| 703 | xfs_dquot_t *udq, |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 704 | xfs_dquot_t *gdq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | { |
| 706 | xfs_dquot_t *tmp; |
| 707 | |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 708 | xfs_dqlock(udq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | |
| 710 | if ((tmp = udq->q_gdquot)) { |
| 711 | if (tmp == gdq) { |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 712 | xfs_dqunlock(udq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | return; |
| 714 | } |
| 715 | |
| 716 | udq->q_gdquot = NULL; |
| 717 | /* |
| 718 | * We can't keep any dqlocks when calling dqrele, |
| 719 | * because the freelist lock comes before dqlocks. |
| 720 | */ |
| 721 | xfs_dqunlock(udq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 722 | /* |
| 723 | * we took a hard reference once upon a time in dqget, |
| 724 | * so give it back when the udquot no longer points at it |
| 725 | * dqput() does the unlocking of the dquot. |
| 726 | */ |
| 727 | xfs_qm_dqrele(tmp); |
| 728 | |
| 729 | xfs_dqlock(udq); |
| 730 | xfs_dqlock(gdq); |
| 731 | |
| 732 | } else { |
| 733 | ASSERT(XFS_DQ_IS_LOCKED(udq)); |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 734 | xfs_dqlock(gdq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 735 | } |
| 736 | |
| 737 | ASSERT(XFS_DQ_IS_LOCKED(udq)); |
| 738 | ASSERT(XFS_DQ_IS_LOCKED(gdq)); |
| 739 | /* |
| 740 | * Somebody could have attached a gdquot here, |
| 741 | * when we dropped the uqlock. If so, just do nothing. |
| 742 | */ |
| 743 | if (udq->q_gdquot == NULL) { |
| 744 | XFS_DQHOLD(gdq); |
| 745 | udq->q_gdquot = gdq; |
| 746 | } |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 747 | |
| 748 | xfs_dqunlock(gdq); |
| 749 | xfs_dqunlock(udq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 750 | } |
| 751 | |
| 752 | |
| 753 | /* |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 754 | * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON |
| 755 | * into account. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 756 | * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | * Inode may get unlocked and relocked in here, and the caller must deal with |
| 758 | * the consequences. |
| 759 | */ |
| 760 | int |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 761 | xfs_qm_dqattach_locked( |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 762 | xfs_inode_t *ip, |
| 763 | uint flags) |
| 764 | { |
| 765 | xfs_mount_t *mp = ip->i_mount; |
| 766 | uint nquotas = 0; |
| 767 | int error = 0; |
| 768 | |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 769 | if (!XFS_IS_QUOTA_RUNNING(mp) || |
| 770 | !XFS_IS_QUOTA_ON(mp) || |
| 771 | !XFS_NOT_DQATTACHED(mp, ip) || |
| 772 | ip->i_ino == mp->m_sb.sb_uquotino || |
| 773 | ip->i_ino == mp->m_sb.sb_gquotino) |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 774 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 776 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 777 | |
| 778 | if (XFS_IS_UQUOTA_ON(mp)) { |
| 779 | error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER, |
| 780 | flags & XFS_QMOPT_DQALLOC, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | NULL, &ip->i_udquot); |
| 782 | if (error) |
| 783 | goto done; |
| 784 | nquotas++; |
| 785 | } |
Christoph Hellwig | 579aa9c | 2008-04-22 17:34:00 +1000 | [diff] [blame] | 786 | |
| 787 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 788 | if (XFS_IS_OQUOTA_ON(mp)) { |
| 789 | error = XFS_IS_GQUOTA_ON(mp) ? |
| 790 | xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP, |
| 791 | flags & XFS_QMOPT_DQALLOC, |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 792 | ip->i_udquot, &ip->i_gdquot) : |
Arkadiusz Mi?kiewicz | 6743099 | 2010-09-26 06:10:18 +0000 | [diff] [blame] | 793 | xfs_qm_dqattach_one(ip, xfs_get_projid(ip), XFS_DQ_PROJ, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 794 | flags & XFS_QMOPT_DQALLOC, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | ip->i_udquot, &ip->i_gdquot); |
| 796 | /* |
| 797 | * Don't worry about the udquot that we may have |
| 798 | * attached above. It'll get detached, if not already. |
| 799 | */ |
| 800 | if (error) |
| 801 | goto done; |
| 802 | nquotas++; |
| 803 | } |
| 804 | |
| 805 | /* |
| 806 | * Attach this group quota to the user quota as a hint. |
| 807 | * This WON'T, in general, result in a thrash. |
| 808 | */ |
| 809 | if (nquotas == 2) { |
Christoph Hellwig | 579aa9c | 2008-04-22 17:34:00 +1000 | [diff] [blame] | 810 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | ASSERT(ip->i_udquot); |
| 812 | ASSERT(ip->i_gdquot); |
| 813 | |
| 814 | /* |
| 815 | * We may or may not have the i_udquot locked at this point, |
| 816 | * but this check is OK since we don't depend on the i_gdquot to |
| 817 | * be accurate 100% all the time. It is just a hint, and this |
| 818 | * will succeed in general. |
| 819 | */ |
| 820 | if (ip->i_udquot->q_gdquot == ip->i_gdquot) |
| 821 | goto done; |
| 822 | /* |
| 823 | * Attach i_gdquot to the gdquot hint inside the i_udquot. |
| 824 | */ |
Christoph Hellwig | 8e9b6e7 | 2009-02-08 21:51:42 +0100 | [diff] [blame] | 825 | xfs_qm_dqattach_grouphint(ip->i_udquot, ip->i_gdquot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | } |
| 827 | |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 828 | done: |
Christoph Hellwig | ea15ab3 | 2011-07-13 13:43:50 +0200 | [diff] [blame] | 829 | #ifdef DEBUG |
| 830 | if (!error) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | if (XFS_IS_UQUOTA_ON(mp)) |
| 832 | ASSERT(ip->i_udquot); |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 833 | if (XFS_IS_OQUOTA_ON(mp)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | ASSERT(ip->i_gdquot); |
| 835 | } |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 836 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 837 | #endif |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 838 | return error; |
| 839 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 840 | |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 841 | int |
| 842 | xfs_qm_dqattach( |
| 843 | struct xfs_inode *ip, |
| 844 | uint flags) |
| 845 | { |
| 846 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 848 | xfs_ilock(ip, XFS_ILOCK_EXCL); |
| 849 | error = xfs_qm_dqattach_locked(ip, flags); |
| 850 | xfs_iunlock(ip, XFS_ILOCK_EXCL); |
| 851 | |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 852 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | } |
| 854 | |
| 855 | /* |
| 856 | * Release dquots (and their references) if any. |
| 857 | * The inode should be locked EXCL except when this's called by |
| 858 | * xfs_ireclaim. |
| 859 | */ |
| 860 | void |
| 861 | xfs_qm_dqdetach( |
| 862 | xfs_inode_t *ip) |
| 863 | { |
| 864 | if (!(ip->i_udquot || ip->i_gdquot)) |
| 865 | return; |
| 866 | |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 867 | trace_xfs_dquot_dqdetach(ip); |
| 868 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_uquotino); |
| 870 | ASSERT(ip->i_ino != ip->i_mount->m_sb.sb_gquotino); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | if (ip->i_udquot) { |
| 872 | xfs_qm_dqrele(ip->i_udquot); |
| 873 | ip->i_udquot = NULL; |
| 874 | } |
| 875 | if (ip->i_gdquot) { |
| 876 | xfs_qm_dqrele(ip->i_gdquot); |
| 877 | ip->i_gdquot = NULL; |
| 878 | } |
| 879 | } |
| 880 | |
Christoph Hellwig | a4edd1d | 2009-01-19 02:03:11 +0100 | [diff] [blame] | 881 | /* |
| 882 | * The hash chains and the mplist use the same xfs_dqhash structure as |
| 883 | * their list head, but we can take the mplist qh_lock and one of the |
| 884 | * hash qh_locks at the same time without any problem as they aren't |
| 885 | * related. |
| 886 | */ |
| 887 | static struct lock_class_key xfs_quota_mplist_class; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 888 | |
| 889 | /* |
| 890 | * This initializes all the quota information that's kept in the |
| 891 | * mount structure |
| 892 | */ |
Christoph Hellwig | ba0f32d | 2005-06-21 15:36:52 +1000 | [diff] [blame] | 893 | STATIC int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 894 | xfs_qm_init_quotainfo( |
| 895 | xfs_mount_t *mp) |
| 896 | { |
| 897 | xfs_quotainfo_t *qinf; |
| 898 | int error; |
| 899 | xfs_dquot_t *dqp; |
| 900 | |
| 901 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
| 902 | |
| 903 | /* |
| 904 | * Tell XQM that we exist as soon as possible. |
| 905 | */ |
| 906 | if ((error = xfs_qm_hold_quotafs_ref(mp))) { |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 907 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 908 | } |
| 909 | |
| 910 | qinf = mp->m_quotainfo = kmem_zalloc(sizeof(xfs_quotainfo_t), KM_SLEEP); |
| 911 | |
| 912 | /* |
| 913 | * See if quotainodes are setup, and if not, allocate them, |
| 914 | * and change the superblock accordingly. |
| 915 | */ |
| 916 | if ((error = xfs_qm_init_quotainos(mp))) { |
Denys Vlasenko | f0e2d93 | 2008-05-19 16:31:57 +1000 | [diff] [blame] | 917 | kmem_free(qinf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 918 | mp->m_quotainfo = NULL; |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 919 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | } |
| 921 | |
Dave Chinner | 3a25404 | 2010-04-13 15:06:48 +1000 | [diff] [blame] | 922 | INIT_LIST_HEAD(&qinf->qi_dqlist); |
| 923 | mutex_init(&qinf->qi_dqlist_lock); |
| 924 | lockdep_set_class(&qinf->qi_dqlist_lock, &xfs_quota_mplist_class); |
Christoph Hellwig | a4edd1d | 2009-01-19 02:03:11 +0100 | [diff] [blame] | 925 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | qinf->qi_dqreclaims = 0; |
| 927 | |
| 928 | /* mutex used to serialize quotaoffs */ |
Jes Sorensen | 794ee1b | 2006-01-09 15:59:21 -0800 | [diff] [blame] | 929 | mutex_init(&qinf->qi_quotaofflock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 930 | |
| 931 | /* Precalc some constants */ |
| 932 | qinf->qi_dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); |
| 933 | ASSERT(qinf->qi_dqchunklen); |
| 934 | qinf->qi_dqperchunk = BBTOB(qinf->qi_dqchunklen); |
| 935 | do_div(qinf->qi_dqperchunk, sizeof(xfs_dqblk_t)); |
| 936 | |
| 937 | mp->m_qflags |= (mp->m_sb.sb_qflags & XFS_ALL_QUOTA_CHKD); |
| 938 | |
| 939 | /* |
| 940 | * We try to get the limits from the superuser's limits fields. |
| 941 | * This is quite hacky, but it is standard quota practice. |
| 942 | * We look at the USR dquot with id == 0 first, but if user quotas |
| 943 | * are not enabled we goto the GRP dquot with id == 0. |
| 944 | * We don't really care to keep separate default limits for user |
| 945 | * and group quotas, at least not at this point. |
| 946 | */ |
| 947 | error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)0, |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 948 | XFS_IS_UQUOTA_RUNNING(mp) ? XFS_DQ_USER : |
| 949 | (XFS_IS_GQUOTA_RUNNING(mp) ? XFS_DQ_GROUP : |
| 950 | XFS_DQ_PROJ), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 951 | XFS_QMOPT_DQSUSER|XFS_QMOPT_DOWARN, |
| 952 | &dqp); |
| 953 | if (! error) { |
| 954 | xfs_disk_dquot_t *ddqp = &dqp->q_core; |
| 955 | |
| 956 | /* |
| 957 | * The warnings and timers set the grace period given to |
| 958 | * a user or group before he or she can not perform any |
| 959 | * more writing. If it is zero, a default is used. |
| 960 | */ |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 961 | qinf->qi_btimelimit = ddqp->d_btimer ? |
| 962 | be32_to_cpu(ddqp->d_btimer) : XFS_QM_BTIMELIMIT; |
| 963 | qinf->qi_itimelimit = ddqp->d_itimer ? |
| 964 | be32_to_cpu(ddqp->d_itimer) : XFS_QM_ITIMELIMIT; |
| 965 | qinf->qi_rtbtimelimit = ddqp->d_rtbtimer ? |
| 966 | be32_to_cpu(ddqp->d_rtbtimer) : XFS_QM_RTBTIMELIMIT; |
| 967 | qinf->qi_bwarnlimit = ddqp->d_bwarns ? |
| 968 | be16_to_cpu(ddqp->d_bwarns) : XFS_QM_BWARNLIMIT; |
| 969 | qinf->qi_iwarnlimit = ddqp->d_iwarns ? |
| 970 | be16_to_cpu(ddqp->d_iwarns) : XFS_QM_IWARNLIMIT; |
| 971 | qinf->qi_rtbwarnlimit = ddqp->d_rtbwarns ? |
| 972 | be16_to_cpu(ddqp->d_rtbwarns) : XFS_QM_RTBWARNLIMIT; |
| 973 | qinf->qi_bhardlimit = be64_to_cpu(ddqp->d_blk_hardlimit); |
| 974 | qinf->qi_bsoftlimit = be64_to_cpu(ddqp->d_blk_softlimit); |
| 975 | qinf->qi_ihardlimit = be64_to_cpu(ddqp->d_ino_hardlimit); |
| 976 | qinf->qi_isoftlimit = be64_to_cpu(ddqp->d_ino_softlimit); |
| 977 | qinf->qi_rtbhardlimit = be64_to_cpu(ddqp->d_rtb_hardlimit); |
| 978 | qinf->qi_rtbsoftlimit = be64_to_cpu(ddqp->d_rtb_softlimit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 979 | |
| 980 | /* |
| 981 | * We sent the XFS_QMOPT_DQSUSER flag to dqget because |
| 982 | * we don't want this dquot cached. We haven't done a |
| 983 | * quotacheck yet, and quotacheck doesn't like incore dquots. |
| 984 | */ |
| 985 | xfs_qm_dqdestroy(dqp); |
| 986 | } else { |
| 987 | qinf->qi_btimelimit = XFS_QM_BTIMELIMIT; |
| 988 | qinf->qi_itimelimit = XFS_QM_ITIMELIMIT; |
| 989 | qinf->qi_rtbtimelimit = XFS_QM_RTBTIMELIMIT; |
| 990 | qinf->qi_bwarnlimit = XFS_QM_BWARNLIMIT; |
| 991 | qinf->qi_iwarnlimit = XFS_QM_IWARNLIMIT; |
Nathan Scott | 06d10dd | 2005-06-21 15:48:47 +1000 | [diff] [blame] | 992 | qinf->qi_rtbwarnlimit = XFS_QM_RTBWARNLIMIT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 993 | } |
| 994 | |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 995 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | } |
| 997 | |
| 998 | |
| 999 | /* |
| 1000 | * Gets called when unmounting a filesystem or when all quotas get |
| 1001 | * turned off. |
| 1002 | * This purges the quota inodes, destroys locks and frees itself. |
| 1003 | */ |
| 1004 | void |
| 1005 | xfs_qm_destroy_quotainfo( |
| 1006 | xfs_mount_t *mp) |
| 1007 | { |
| 1008 | xfs_quotainfo_t *qi; |
| 1009 | |
| 1010 | qi = mp->m_quotainfo; |
| 1011 | ASSERT(qi != NULL); |
| 1012 | ASSERT(xfs_Gqm != NULL); |
| 1013 | |
| 1014 | /* |
| 1015 | * Release the reference that XQM kept, so that we know |
| 1016 | * when the XQM structure should be freed. We cannot assume |
| 1017 | * that xfs_Gqm is non-null after this point. |
| 1018 | */ |
| 1019 | xfs_qm_rele_quotafs_ref(mp); |
| 1020 | |
Dave Chinner | 3a25404 | 2010-04-13 15:06:48 +1000 | [diff] [blame] | 1021 | ASSERT(list_empty(&qi->qi_dqlist)); |
| 1022 | mutex_destroy(&qi->qi_dqlist_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1023 | |
| 1024 | if (qi->qi_uquotaip) { |
Christoph Hellwig | 26cc002 | 2008-07-18 17:12:43 +1000 | [diff] [blame] | 1025 | IRELE(qi->qi_uquotaip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1026 | qi->qi_uquotaip = NULL; /* paranoia */ |
| 1027 | } |
| 1028 | if (qi->qi_gquotaip) { |
Christoph Hellwig | 26cc002 | 2008-07-18 17:12:43 +1000 | [diff] [blame] | 1029 | IRELE(qi->qi_gquotaip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1030 | qi->qi_gquotaip = NULL; |
| 1031 | } |
| 1032 | mutex_destroy(&qi->qi_quotaofflock); |
Denys Vlasenko | f0e2d93 | 2008-05-19 16:31:57 +1000 | [diff] [blame] | 1033 | kmem_free(qi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1034 | mp->m_quotainfo = NULL; |
| 1035 | } |
| 1036 | |
| 1037 | |
| 1038 | |
| 1039 | /* ------------------- PRIVATE STATIC FUNCTIONS ----------------------- */ |
| 1040 | |
| 1041 | /* ARGSUSED */ |
| 1042 | STATIC void |
| 1043 | xfs_qm_list_init( |
| 1044 | xfs_dqlist_t *list, |
| 1045 | char *str, |
| 1046 | int n) |
| 1047 | { |
Jes Sorensen | 794ee1b | 2006-01-09 15:59:21 -0800 | [diff] [blame] | 1048 | mutex_init(&list->qh_lock); |
Dave Chinner | e6a81f1 | 2010-04-13 15:06:51 +1000 | [diff] [blame] | 1049 | INIT_LIST_HEAD(&list->qh_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1050 | list->qh_version = 0; |
| 1051 | list->qh_nelems = 0; |
| 1052 | } |
| 1053 | |
| 1054 | STATIC void |
| 1055 | xfs_qm_list_destroy( |
| 1056 | xfs_dqlist_t *list) |
| 1057 | { |
| 1058 | mutex_destroy(&(list->qh_lock)); |
| 1059 | } |
| 1060 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1061 | /* |
| 1062 | * Create an inode and return with a reference already taken, but unlocked |
| 1063 | * This is how we create quota inodes |
| 1064 | */ |
| 1065 | STATIC int |
| 1066 | xfs_qm_qino_alloc( |
| 1067 | xfs_mount_t *mp, |
| 1068 | xfs_inode_t **ip, |
| 1069 | __int64_t sbfields, |
| 1070 | uint flags) |
| 1071 | { |
| 1072 | xfs_trans_t *tp; |
| 1073 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1074 | int committed; |
| 1075 | |
Nathan Scott | 061f720 | 2006-01-11 15:27:50 +1100 | [diff] [blame] | 1076 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_QINOCREATE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1077 | if ((error = xfs_trans_reserve(tp, |
| 1078 | XFS_QM_QINOCREATE_SPACE_RES(mp), |
| 1079 | XFS_CREATE_LOG_RES(mp), 0, |
| 1080 | XFS_TRANS_PERM_LOG_RES, |
| 1081 | XFS_CREATE_LOG_COUNT))) { |
| 1082 | xfs_trans_cancel(tp, 0); |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1083 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1084 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1085 | |
Christoph Hellwig | 6c77b0e | 2010-10-06 18:41:17 +0000 | [diff] [blame] | 1086 | error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0, 1, ip, &committed); |
| 1087 | if (error) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1088 | xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES | |
| 1089 | XFS_TRANS_ABORT); |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1090 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1091 | } |
| 1092 | |
| 1093 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1094 | * Make the changes in the superblock, and log those too. |
| 1095 | * sbfields arg may contain fields other than *QUOTINO; |
| 1096 | * VERSIONNUM for example. |
| 1097 | */ |
Eric Sandeen | 3685c2a | 2007-10-11 17:42:32 +1000 | [diff] [blame] | 1098 | spin_lock(&mp->m_sb_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1099 | if (flags & XFS_QMOPT_SBVERSION) { |
Eric Sandeen | 6211870 | 2008-03-06 13:44:28 +1100 | [diff] [blame] | 1100 | ASSERT(!xfs_sb_version_hasquota(&mp->m_sb)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1101 | ASSERT((sbfields & (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | |
| 1102 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)) == |
| 1103 | (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | |
| 1104 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS)); |
| 1105 | |
Eric Sandeen | 6211870 | 2008-03-06 13:44:28 +1100 | [diff] [blame] | 1106 | xfs_sb_version_addquota(&mp->m_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1107 | mp->m_sb.sb_uquotino = NULLFSINO; |
| 1108 | mp->m_sb.sb_gquotino = NULLFSINO; |
| 1109 | |
| 1110 | /* qflags will get updated _after_ quotacheck */ |
| 1111 | mp->m_sb.sb_qflags = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1112 | } |
| 1113 | if (flags & XFS_QMOPT_UQUOTA) |
| 1114 | mp->m_sb.sb_uquotino = (*ip)->i_ino; |
| 1115 | else |
| 1116 | mp->m_sb.sb_gquotino = (*ip)->i_ino; |
Eric Sandeen | 3685c2a | 2007-10-11 17:42:32 +1000 | [diff] [blame] | 1117 | spin_unlock(&mp->m_sb_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1118 | xfs_mod_sb(tp, sbfields); |
| 1119 | |
Eric Sandeen | 1c72bf9 | 2007-05-08 13:48:42 +1000 | [diff] [blame] | 1120 | if ((error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES))) { |
Dave Chinner | 5348778 | 2011-03-07 10:05:35 +1100 | [diff] [blame] | 1121 | xfs_alert(mp, "%s failed (error %d)!", __func__, error); |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1122 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1123 | } |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1124 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1125 | } |
| 1126 | |
| 1127 | |
David Chinner | 5b13973 | 2008-04-10 12:20:10 +1000 | [diff] [blame] | 1128 | STATIC void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1129 | xfs_qm_reset_dqcounts( |
| 1130 | xfs_mount_t *mp, |
| 1131 | xfs_buf_t *bp, |
| 1132 | xfs_dqid_t id, |
| 1133 | uint type) |
| 1134 | { |
| 1135 | xfs_disk_dquot_t *ddq; |
| 1136 | int j; |
| 1137 | |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 1138 | trace_xfs_reset_dqcounts(bp, _RET_IP_); |
| 1139 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | /* |
| 1141 | * Reset all counters and timers. They'll be |
| 1142 | * started afresh by xfs_qm_quotacheck. |
| 1143 | */ |
| 1144 | #ifdef DEBUG |
| 1145 | j = XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB); |
| 1146 | do_div(j, sizeof(xfs_dqblk_t)); |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 1147 | ASSERT(mp->m_quotainfo->qi_dqperchunk == j); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1148 | #endif |
Chandra Seetharaman | 6292604 | 2011-07-22 23:40:15 +0000 | [diff] [blame] | 1149 | ddq = bp->b_addr; |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 1150 | for (j = 0; j < mp->m_quotainfo->qi_dqperchunk; j++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1151 | /* |
| 1152 | * Do a sanity check, and if needed, repair the dqblk. Don't |
| 1153 | * output any warnings because it's perfectly possible to |
Nathan Scott | c41564b | 2006-03-29 08:55:14 +1000 | [diff] [blame] | 1154 | * find uninitialised dquot blks. See comment in xfs_qm_dqcheck. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1155 | */ |
Dave Chinner | a0fa2b6 | 2011-03-07 10:01:35 +1100 | [diff] [blame] | 1156 | (void) xfs_qm_dqcheck(mp, ddq, id+j, type, XFS_QMOPT_DQREPAIR, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1157 | "xfs_quotacheck"); |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 1158 | ddq->d_bcount = 0; |
| 1159 | ddq->d_icount = 0; |
| 1160 | ddq->d_rtbcount = 0; |
| 1161 | ddq->d_btimer = 0; |
| 1162 | ddq->d_itimer = 0; |
| 1163 | ddq->d_rtbtimer = 0; |
| 1164 | ddq->d_bwarns = 0; |
| 1165 | ddq->d_iwarns = 0; |
| 1166 | ddq->d_rtbwarns = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1167 | ddq = (xfs_disk_dquot_t *) ((xfs_dqblk_t *)ddq + 1); |
| 1168 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1169 | } |
| 1170 | |
| 1171 | STATIC int |
| 1172 | xfs_qm_dqiter_bufs( |
| 1173 | xfs_mount_t *mp, |
| 1174 | xfs_dqid_t firstid, |
| 1175 | xfs_fsblock_t bno, |
| 1176 | xfs_filblks_t blkcnt, |
| 1177 | uint flags) |
| 1178 | { |
| 1179 | xfs_buf_t *bp; |
| 1180 | int error; |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 1181 | int type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1182 | |
| 1183 | ASSERT(blkcnt > 0); |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 1184 | type = flags & XFS_QMOPT_UQUOTA ? XFS_DQ_USER : |
| 1185 | (flags & XFS_QMOPT_PQUOTA ? XFS_DQ_PROJ : XFS_DQ_GROUP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1186 | error = 0; |
| 1187 | |
| 1188 | /* |
| 1189 | * Blkcnt arg can be a very big number, and might even be |
| 1190 | * larger than the log itself. So, we have to break it up into |
| 1191 | * manageable-sized transactions. |
| 1192 | * Note that we don't start a permanent transaction here; we might |
| 1193 | * not be able to get a log reservation for the whole thing up front, |
| 1194 | * and we don't really care to either, because we just discard |
| 1195 | * everything if we were to crash in the middle of this loop. |
| 1196 | */ |
| 1197 | while (blkcnt--) { |
| 1198 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, |
| 1199 | XFS_FSB_TO_DADDR(mp, bno), |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 1200 | mp->m_quotainfo->qi_dqchunklen, 0, &bp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1201 | if (error) |
| 1202 | break; |
| 1203 | |
David Chinner | 5b13973 | 2008-04-10 12:20:10 +1000 | [diff] [blame] | 1204 | xfs_qm_reset_dqcounts(mp, bp, firstid, type); |
Christoph Hellwig | 61551f1 | 2011-08-23 08:28:06 +0000 | [diff] [blame] | 1205 | xfs_buf_delwri_queue(bp); |
| 1206 | xfs_buf_relse(bp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1207 | /* |
| 1208 | * goto the next block. |
| 1209 | */ |
| 1210 | bno++; |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 1211 | firstid += mp->m_quotainfo->qi_dqperchunk; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1212 | } |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1213 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1214 | } |
| 1215 | |
| 1216 | /* |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 1217 | * Iterate over all allocated USR/GRP/PRJ dquots in the system, calling a |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1218 | * caller supplied function for every chunk of dquots that we find. |
| 1219 | */ |
| 1220 | STATIC int |
| 1221 | xfs_qm_dqiterate( |
| 1222 | xfs_mount_t *mp, |
| 1223 | xfs_inode_t *qip, |
| 1224 | uint flags) |
| 1225 | { |
| 1226 | xfs_bmbt_irec_t *map; |
| 1227 | int i, nmaps; /* number of map entries */ |
| 1228 | int error; /* return value */ |
| 1229 | xfs_fileoff_t lblkno; |
| 1230 | xfs_filblks_t maxlblkcnt; |
| 1231 | xfs_dqid_t firstid; |
| 1232 | xfs_fsblock_t rablkno; |
| 1233 | xfs_filblks_t rablkcnt; |
| 1234 | |
| 1235 | error = 0; |
| 1236 | /* |
Nathan Scott | c41564b | 2006-03-29 08:55:14 +1000 | [diff] [blame] | 1237 | * This looks racy, but we can't keep an inode lock across a |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1238 | * trans_reserve. But, this gets called during quotacheck, and that |
| 1239 | * happens only at mount time which is single threaded. |
| 1240 | */ |
| 1241 | if (qip->i_d.di_nblocks == 0) |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1242 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1243 | |
| 1244 | map = kmem_alloc(XFS_DQITER_MAP_SIZE * sizeof(*map), KM_SLEEP); |
| 1245 | |
| 1246 | lblkno = 0; |
| 1247 | maxlblkcnt = XFS_B_TO_FSB(mp, (xfs_ufsize_t)XFS_MAXIOFFSET(mp)); |
| 1248 | do { |
| 1249 | nmaps = XFS_DQITER_MAP_SIZE; |
| 1250 | /* |
| 1251 | * We aren't changing the inode itself. Just changing |
| 1252 | * some of its data. No new blocks are added here, and |
| 1253 | * the inode is never added to the transaction. |
| 1254 | */ |
| 1255 | xfs_ilock(qip, XFS_ILOCK_SHARED); |
Dave Chinner | 5c8ed20 | 2011-09-18 20:40:45 +0000 | [diff] [blame] | 1256 | error = xfs_bmapi_read(qip, lblkno, maxlblkcnt - lblkno, |
| 1257 | map, &nmaps, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1258 | xfs_iunlock(qip, XFS_ILOCK_SHARED); |
| 1259 | if (error) |
| 1260 | break; |
| 1261 | |
| 1262 | ASSERT(nmaps <= XFS_DQITER_MAP_SIZE); |
| 1263 | for (i = 0; i < nmaps; i++) { |
| 1264 | ASSERT(map[i].br_startblock != DELAYSTARTBLOCK); |
| 1265 | ASSERT(map[i].br_blockcount); |
| 1266 | |
| 1267 | |
| 1268 | lblkno += map[i].br_blockcount; |
| 1269 | |
| 1270 | if (map[i].br_startblock == HOLESTARTBLOCK) |
| 1271 | continue; |
| 1272 | |
| 1273 | firstid = (xfs_dqid_t) map[i].br_startoff * |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 1274 | mp->m_quotainfo->qi_dqperchunk; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1275 | /* |
| 1276 | * Do a read-ahead on the next extent. |
| 1277 | */ |
| 1278 | if ((i+1 < nmaps) && |
| 1279 | (map[i+1].br_startblock != HOLESTARTBLOCK)) { |
| 1280 | rablkcnt = map[i+1].br_blockcount; |
| 1281 | rablkno = map[i+1].br_startblock; |
| 1282 | while (rablkcnt--) { |
Christoph Hellwig | 1a1a3e9 | 2010-10-06 18:41:18 +0000 | [diff] [blame] | 1283 | xfs_buf_readahead(mp->m_ddev_targp, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1284 | XFS_FSB_TO_DADDR(mp, rablkno), |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 1285 | mp->m_quotainfo->qi_dqchunklen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1286 | rablkno++; |
| 1287 | } |
| 1288 | } |
| 1289 | /* |
| 1290 | * Iterate thru all the blks in the extent and |
| 1291 | * reset the counters of all the dquots inside them. |
| 1292 | */ |
| 1293 | if ((error = xfs_qm_dqiter_bufs(mp, |
| 1294 | firstid, |
| 1295 | map[i].br_startblock, |
| 1296 | map[i].br_blockcount, |
| 1297 | flags))) { |
| 1298 | break; |
| 1299 | } |
| 1300 | } |
| 1301 | |
| 1302 | if (error) |
| 1303 | break; |
| 1304 | } while (nmaps > 0); |
| 1305 | |
Denys Vlasenko | f0e2d93 | 2008-05-19 16:31:57 +1000 | [diff] [blame] | 1306 | kmem_free(map); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1307 | |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1308 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1309 | } |
| 1310 | |
| 1311 | /* |
| 1312 | * Called by dqusage_adjust in doing a quotacheck. |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1313 | * |
| 1314 | * Given the inode, and a dquot id this updates both the incore dqout as well |
| 1315 | * as the buffer copy. This is so that once the quotacheck is done, we can |
| 1316 | * just log all the buffers, as opposed to logging numerous updates to |
| 1317 | * individual dquots. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1318 | */ |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1319 | STATIC int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1320 | xfs_qm_quotacheck_dqadjust( |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1321 | struct xfs_inode *ip, |
| 1322 | xfs_dqid_t id, |
| 1323 | uint type, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1324 | xfs_qcnt_t nblks, |
| 1325 | xfs_qcnt_t rtblks) |
| 1326 | { |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1327 | struct xfs_mount *mp = ip->i_mount; |
| 1328 | struct xfs_dquot *dqp; |
| 1329 | int error; |
| 1330 | |
| 1331 | error = xfs_qm_dqget(mp, ip, id, type, |
| 1332 | XFS_QMOPT_DQALLOC | XFS_QMOPT_DOWARN, &dqp); |
| 1333 | if (error) { |
| 1334 | /* |
| 1335 | * Shouldn't be able to turn off quotas here. |
| 1336 | */ |
| 1337 | ASSERT(error != ESRCH); |
| 1338 | ASSERT(error != ENOENT); |
| 1339 | return error; |
| 1340 | } |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 1341 | |
| 1342 | trace_xfs_dqadjust(dqp); |
| 1343 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1344 | /* |
| 1345 | * Adjust the inode count and the block count to reflect this inode's |
| 1346 | * resource usage. |
| 1347 | */ |
Marcin Slusarz | 413d57c | 2008-02-13 15:03:29 -0800 | [diff] [blame] | 1348 | be64_add_cpu(&dqp->q_core.d_icount, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1349 | dqp->q_res_icount++; |
| 1350 | if (nblks) { |
Marcin Slusarz | 413d57c | 2008-02-13 15:03:29 -0800 | [diff] [blame] | 1351 | be64_add_cpu(&dqp->q_core.d_bcount, nblks); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1352 | dqp->q_res_bcount += nblks; |
| 1353 | } |
| 1354 | if (rtblks) { |
Marcin Slusarz | 413d57c | 2008-02-13 15:03:29 -0800 | [diff] [blame] | 1355 | be64_add_cpu(&dqp->q_core.d_rtbcount, rtblks); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1356 | dqp->q_res_rtbcount += rtblks; |
| 1357 | } |
| 1358 | |
| 1359 | /* |
| 1360 | * Set default limits, adjust timers (since we changed usages) |
Christoph Hellwig | 191f848 | 2010-04-20 17:01:53 +1000 | [diff] [blame] | 1361 | * |
| 1362 | * There are no timers for the default values set in the root dquot. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1363 | */ |
Christoph Hellwig | 191f848 | 2010-04-20 17:01:53 +1000 | [diff] [blame] | 1364 | if (dqp->q_core.d_id) { |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1365 | xfs_qm_adjust_dqlimits(mp, &dqp->q_core); |
| 1366 | xfs_qm_adjust_dqtimers(mp, &dqp->q_core); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1367 | } |
| 1368 | |
| 1369 | dqp->dq_flags |= XFS_DQ_DIRTY; |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1370 | xfs_qm_dqput(dqp); |
| 1371 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1372 | } |
| 1373 | |
| 1374 | STATIC int |
| 1375 | xfs_qm_get_rtblks( |
| 1376 | xfs_inode_t *ip, |
| 1377 | xfs_qcnt_t *O_rtblks) |
| 1378 | { |
| 1379 | xfs_filblks_t rtblks; /* total rt blks */ |
Mandy Kirkconnell | 4eea22f | 2006-03-14 13:29:52 +1100 | [diff] [blame] | 1380 | xfs_extnum_t idx; /* extent record index */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1381 | xfs_ifork_t *ifp; /* inode fork pointer */ |
| 1382 | xfs_extnum_t nextents; /* number of extent entries */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1383 | int error; |
| 1384 | |
| 1385 | ASSERT(XFS_IS_REALTIME_INODE(ip)); |
| 1386 | ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); |
| 1387 | if (!(ifp->if_flags & XFS_IFEXTENTS)) { |
| 1388 | if ((error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK))) |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1389 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1390 | } |
| 1391 | rtblks = 0; |
Mandy Kirkconnell | 4eea22f | 2006-03-14 13:29:52 +1100 | [diff] [blame] | 1392 | nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t); |
Christoph Hellwig | a6f64d4 | 2007-08-16 16:23:40 +1000 | [diff] [blame] | 1393 | for (idx = 0; idx < nextents; idx++) |
| 1394 | rtblks += xfs_bmbt_get_blockcount(xfs_iext_get_ext(ifp, idx)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1395 | *O_rtblks = (xfs_qcnt_t)rtblks; |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1396 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1397 | } |
| 1398 | |
| 1399 | /* |
| 1400 | * callback routine supplied to bulkstat(). Given an inumber, find its |
| 1401 | * dquots and update them to account for resources taken by that inode. |
| 1402 | */ |
| 1403 | /* ARGSUSED */ |
| 1404 | STATIC int |
| 1405 | xfs_qm_dqusage_adjust( |
| 1406 | xfs_mount_t *mp, /* mount point for filesystem */ |
| 1407 | xfs_ino_t ino, /* inode number to get data for */ |
| 1408 | void __user *buffer, /* not used */ |
| 1409 | int ubsize, /* not used */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1410 | int *ubused, /* not used */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1411 | int *res) /* result code value */ |
| 1412 | { |
| 1413 | xfs_inode_t *ip; |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1414 | xfs_qcnt_t nblks, rtblks = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1415 | int error; |
| 1416 | |
| 1417 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
| 1418 | |
| 1419 | /* |
| 1420 | * rootino must have its resources accounted for, not so with the quota |
| 1421 | * inodes. |
| 1422 | */ |
| 1423 | if (ino == mp->m_sb.sb_uquotino || ino == mp->m_sb.sb_gquotino) { |
| 1424 | *res = BULKSTAT_RV_NOTHING; |
| 1425 | return XFS_ERROR(EINVAL); |
| 1426 | } |
| 1427 | |
| 1428 | /* |
| 1429 | * We don't _need_ to take the ilock EXCL. However, the xfs_qm_dqget |
| 1430 | * interface expects the inode to be exclusively locked because that's |
| 1431 | * the case in all other instances. It's OK that we do this because |
| 1432 | * quotacheck is done only at mount time. |
| 1433 | */ |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1434 | error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_EXCL, &ip); |
| 1435 | if (error) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1436 | *res = BULKSTAT_RV_NOTHING; |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1437 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1438 | } |
| 1439 | |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1440 | ASSERT(ip->i_delayed_blks == 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1441 | |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1442 | if (XFS_IS_REALTIME_INODE(ip)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1443 | /* |
| 1444 | * Walk thru the extent list and count the realtime blocks. |
| 1445 | */ |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1446 | error = xfs_qm_get_rtblks(ip, &rtblks); |
| 1447 | if (error) |
| 1448 | goto error0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1449 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1450 | |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1451 | nblks = (xfs_qcnt_t)ip->i_d.di_nblocks - rtblks; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1452 | |
| 1453 | /* |
| 1454 | * Add the (disk blocks and inode) resources occupied by this |
| 1455 | * inode to its dquots. We do this adjustment in the incore dquot, |
| 1456 | * and also copy the changes to its buffer. |
| 1457 | * We don't care about putting these changes in a transaction |
| 1458 | * envelope because if we crash in the middle of a 'quotacheck' |
| 1459 | * we have to start from the beginning anyway. |
| 1460 | * Once we're done, we'll log all the dquot bufs. |
| 1461 | * |
Nathan Scott | c41564b | 2006-03-29 08:55:14 +1000 | [diff] [blame] | 1462 | * The *QUOTA_ON checks below may look pretty racy, but quotachecks |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1463 | * and quotaoffs don't race. (Quotachecks happen at mount time only). |
| 1464 | */ |
| 1465 | if (XFS_IS_UQUOTA_ON(mp)) { |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1466 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_uid, |
| 1467 | XFS_DQ_USER, nblks, rtblks); |
| 1468 | if (error) |
| 1469 | goto error0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1470 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1471 | |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1472 | if (XFS_IS_GQUOTA_ON(mp)) { |
| 1473 | error = xfs_qm_quotacheck_dqadjust(ip, ip->i_d.di_gid, |
| 1474 | XFS_DQ_GROUP, nblks, rtblks); |
| 1475 | if (error) |
| 1476 | goto error0; |
| 1477 | } |
| 1478 | |
| 1479 | if (XFS_IS_PQUOTA_ON(mp)) { |
Arkadiusz Mi?kiewicz | 6743099 | 2010-09-26 06:10:18 +0000 | [diff] [blame] | 1480 | error = xfs_qm_quotacheck_dqadjust(ip, xfs_get_projid(ip), |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1481 | XFS_DQ_PROJ, nblks, rtblks); |
| 1482 | if (error) |
| 1483 | goto error0; |
| 1484 | } |
| 1485 | |
| 1486 | xfs_iunlock(ip, XFS_ILOCK_EXCL); |
| 1487 | IRELE(ip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1488 | *res = BULKSTAT_RV_DIDONE; |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1489 | return 0; |
Christoph Hellwig | 52fda11 | 2010-09-06 01:44:22 +0000 | [diff] [blame] | 1490 | |
| 1491 | error0: |
| 1492 | xfs_iunlock(ip, XFS_ILOCK_EXCL); |
| 1493 | IRELE(ip); |
| 1494 | *res = BULKSTAT_RV_GIVEUP; |
| 1495 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1496 | } |
| 1497 | |
| 1498 | /* |
| 1499 | * Walk thru all the filesystem inodes and construct a consistent view |
| 1500 | * of the disk quota world. If the quotacheck fails, disable quotas. |
| 1501 | */ |
| 1502 | int |
| 1503 | xfs_qm_quotacheck( |
| 1504 | xfs_mount_t *mp) |
| 1505 | { |
| 1506 | int done, count, error; |
| 1507 | xfs_ino_t lastino; |
| 1508 | size_t structsz; |
| 1509 | xfs_inode_t *uip, *gip; |
| 1510 | uint flags; |
| 1511 | |
| 1512 | count = INT_MAX; |
| 1513 | structsz = 1; |
| 1514 | lastino = 0; |
| 1515 | flags = 0; |
| 1516 | |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 1517 | ASSERT(mp->m_quotainfo->qi_uquotaip || mp->m_quotainfo->qi_gquotaip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1518 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
| 1519 | |
| 1520 | /* |
| 1521 | * There should be no cached dquots. The (simplistic) quotacheck |
| 1522 | * algorithm doesn't like that. |
| 1523 | */ |
Dave Chinner | 3a25404 | 2010-04-13 15:06:48 +1000 | [diff] [blame] | 1524 | ASSERT(list_empty(&mp->m_quotainfo->qi_dqlist)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1525 | |
Dave Chinner | 0b932cc | 2011-03-07 10:08:35 +1100 | [diff] [blame] | 1526 | xfs_notice(mp, "Quotacheck needed: Please wait."); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1527 | |
| 1528 | /* |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 1529 | * First we go thru all the dquots on disk, USR and GRP/PRJ, and reset |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1530 | * their counters to zero. We need a clean slate. |
| 1531 | * We don't log our changes till later. |
| 1532 | */ |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 1533 | uip = mp->m_quotainfo->qi_uquotaip; |
| 1534 | if (uip) { |
| 1535 | error = xfs_qm_dqiterate(mp, uip, XFS_QMOPT_UQUOTA); |
| 1536 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1537 | goto error_return; |
| 1538 | flags |= XFS_UQUOTA_CHKD; |
| 1539 | } |
| 1540 | |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 1541 | gip = mp->m_quotainfo->qi_gquotaip; |
| 1542 | if (gip) { |
| 1543 | error = xfs_qm_dqiterate(mp, gip, XFS_IS_GQUOTA_ON(mp) ? |
| 1544 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); |
| 1545 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1546 | goto error_return; |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 1547 | flags |= XFS_OQUOTA_CHKD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1548 | } |
| 1549 | |
| 1550 | do { |
| 1551 | /* |
| 1552 | * Iterate thru all the inodes in the file system, |
| 1553 | * adjusting the corresponding dquot counters in core. |
| 1554 | */ |
Christoph Hellwig | 7dce11d | 2010-06-23 18:11:11 +1000 | [diff] [blame] | 1555 | error = xfs_bulkstat(mp, &lastino, &count, |
| 1556 | xfs_qm_dqusage_adjust, |
| 1557 | structsz, NULL, &done); |
| 1558 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1559 | break; |
| 1560 | |
Christoph Hellwig | 7dce11d | 2010-06-23 18:11:11 +1000 | [diff] [blame] | 1561 | } while (!done); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1562 | |
| 1563 | /* |
David Chinner | 4b8879d | 2008-04-10 12:20:17 +1000 | [diff] [blame] | 1564 | * We've made all the changes that we need to make incore. |
| 1565 | * Flush them down to disk buffers if everything was updated |
| 1566 | * successfully. |
| 1567 | */ |
| 1568 | if (!error) |
Christoph Hellwig | a7ef9bd | 2011-12-06 21:58:13 +0000 | [diff] [blame^] | 1569 | error = xfs_qm_dqflush_all(mp); |
David Chinner | 4b8879d | 2008-04-10 12:20:17 +1000 | [diff] [blame] | 1570 | |
| 1571 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1572 | * We can get this error if we couldn't do a dquot allocation inside |
| 1573 | * xfs_qm_dqusage_adjust (via bulkstat). We don't care about the |
| 1574 | * dirty dquots that might be cached, we just want to get rid of them |
| 1575 | * and turn quotaoff. The dquots won't be attached to any of the inodes |
| 1576 | * at this point (because we intentionally didn't in dqget_noattach). |
| 1577 | */ |
| 1578 | if (error) { |
Christoph Hellwig | 8112e9d | 2010-04-20 17:02:29 +1000 | [diff] [blame] | 1579 | xfs_qm_dqpurge_all(mp, XFS_QMOPT_QUOTALL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1580 | goto error_return; |
| 1581 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1582 | |
| 1583 | /* |
| 1584 | * We didn't log anything, because if we crashed, we'll have to |
| 1585 | * start the quotacheck from scratch anyway. However, we must make |
| 1586 | * sure that our dquot changes are secure before we put the |
| 1587 | * quotacheck'd stamp on the superblock. So, here we do a synchronous |
| 1588 | * flush. |
| 1589 | */ |
Christoph Hellwig | a9add83 | 2011-10-10 16:52:52 +0000 | [diff] [blame] | 1590 | xfs_flush_buftarg(mp->m_ddev_targp, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1591 | |
| 1592 | /* |
| 1593 | * If one type of quotas is off, then it will lose its |
| 1594 | * quotachecked status, since we won't be doing accounting for |
| 1595 | * that type anymore. |
| 1596 | */ |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 1597 | mp->m_qflags &= ~(XFS_OQUOTA_CHKD | XFS_UQUOTA_CHKD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1598 | mp->m_qflags |= flags; |
| 1599 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1600 | error_return: |
| 1601 | if (error) { |
Dave Chinner | 0b932cc | 2011-03-07 10:08:35 +1100 | [diff] [blame] | 1602 | xfs_warn(mp, |
| 1603 | "Quotacheck: Unsuccessful (Error %d): Disabling quotas.", |
| 1604 | error); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1605 | /* |
| 1606 | * We must turn off quotas. |
| 1607 | */ |
| 1608 | ASSERT(mp->m_quotainfo != NULL); |
| 1609 | ASSERT(xfs_Gqm != NULL); |
| 1610 | xfs_qm_destroy_quotainfo(mp); |
David Chinner | 31d5577 | 2008-04-10 12:20:38 +1000 | [diff] [blame] | 1611 | if (xfs_mount_reset_sbqflags(mp)) { |
Dave Chinner | 0b932cc | 2011-03-07 10:08:35 +1100 | [diff] [blame] | 1612 | xfs_warn(mp, |
| 1613 | "Quotacheck: Failed to reset quota flags."); |
David Chinner | 31d5577 | 2008-04-10 12:20:38 +1000 | [diff] [blame] | 1614 | } |
Dave Chinner | 0b932cc | 2011-03-07 10:08:35 +1100 | [diff] [blame] | 1615 | } else |
| 1616 | xfs_notice(mp, "Quotacheck: Done."); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1617 | return (error); |
| 1618 | } |
| 1619 | |
| 1620 | /* |
| 1621 | * This is called after the superblock has been read in and we're ready to |
| 1622 | * iget the quota inodes. |
| 1623 | */ |
| 1624 | STATIC int |
| 1625 | xfs_qm_init_quotainos( |
| 1626 | xfs_mount_t *mp) |
| 1627 | { |
| 1628 | xfs_inode_t *uip, *gip; |
| 1629 | int error; |
| 1630 | __int64_t sbflags; |
| 1631 | uint flags; |
| 1632 | |
| 1633 | ASSERT(mp->m_quotainfo); |
| 1634 | uip = gip = NULL; |
| 1635 | sbflags = 0; |
| 1636 | flags = 0; |
| 1637 | |
| 1638 | /* |
| 1639 | * Get the uquota and gquota inodes |
| 1640 | */ |
Eric Sandeen | 6211870 | 2008-03-06 13:44:28 +1100 | [diff] [blame] | 1641 | if (xfs_sb_version_hasquota(&mp->m_sb)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1642 | if (XFS_IS_UQUOTA_ON(mp) && |
| 1643 | mp->m_sb.sb_uquotino != NULLFSINO) { |
| 1644 | ASSERT(mp->m_sb.sb_uquotino > 0); |
| 1645 | if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_uquotino, |
Dave Chinner | 7b6259e | 2010-06-24 11:35:17 +1000 | [diff] [blame] | 1646 | 0, 0, &uip))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1647 | return XFS_ERROR(error); |
| 1648 | } |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 1649 | if (XFS_IS_OQUOTA_ON(mp) && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1650 | mp->m_sb.sb_gquotino != NULLFSINO) { |
| 1651 | ASSERT(mp->m_sb.sb_gquotino > 0); |
| 1652 | if ((error = xfs_iget(mp, NULL, mp->m_sb.sb_gquotino, |
Dave Chinner | 7b6259e | 2010-06-24 11:35:17 +1000 | [diff] [blame] | 1653 | 0, 0, &gip))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1654 | if (uip) |
Christoph Hellwig | 4335509 | 2008-03-27 18:01:08 +1100 | [diff] [blame] | 1655 | IRELE(uip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1656 | return XFS_ERROR(error); |
| 1657 | } |
| 1658 | } |
| 1659 | } else { |
| 1660 | flags |= XFS_QMOPT_SBVERSION; |
| 1661 | sbflags |= (XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | |
| 1662 | XFS_SB_GQUOTINO | XFS_SB_QFLAGS); |
| 1663 | } |
| 1664 | |
| 1665 | /* |
| 1666 | * Create the two inodes, if they don't exist already. The changes |
| 1667 | * made above will get added to a transaction and logged in one of |
| 1668 | * the qino_alloc calls below. If the device is readonly, |
| 1669 | * temporarily switch to read-write to do this. |
| 1670 | */ |
| 1671 | if (XFS_IS_UQUOTA_ON(mp) && uip == NULL) { |
| 1672 | if ((error = xfs_qm_qino_alloc(mp, &uip, |
| 1673 | sbflags | XFS_SB_UQUOTINO, |
| 1674 | flags | XFS_QMOPT_UQUOTA))) |
| 1675 | return XFS_ERROR(error); |
| 1676 | |
| 1677 | flags &= ~XFS_QMOPT_SBVERSION; |
| 1678 | } |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 1679 | if (XFS_IS_OQUOTA_ON(mp) && gip == NULL) { |
| 1680 | flags |= (XFS_IS_GQUOTA_ON(mp) ? |
| 1681 | XFS_QMOPT_GQUOTA : XFS_QMOPT_PQUOTA); |
| 1682 | error = xfs_qm_qino_alloc(mp, &gip, |
| 1683 | sbflags | XFS_SB_GQUOTINO, flags); |
| 1684 | if (error) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1685 | if (uip) |
Christoph Hellwig | 4335509 | 2008-03-27 18:01:08 +1100 | [diff] [blame] | 1686 | IRELE(uip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1687 | |
| 1688 | return XFS_ERROR(error); |
| 1689 | } |
| 1690 | } |
| 1691 | |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 1692 | mp->m_quotainfo->qi_uquotaip = uip; |
| 1693 | mp->m_quotainfo->qi_gquotaip = gip; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1694 | |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1695 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1696 | } |
| 1697 | |
| 1698 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1699 | |
| 1700 | /* |
| 1701 | * Just pop the least recently used dquot off the freelist and |
| 1702 | * recycle it. The returned dquot is locked. |
| 1703 | */ |
| 1704 | STATIC xfs_dquot_t * |
| 1705 | xfs_qm_dqreclaim_one(void) |
| 1706 | { |
| 1707 | xfs_dquot_t *dqpout; |
| 1708 | xfs_dquot_t *dqp; |
| 1709 | int restarts; |
Dave Chinner | 0fbca4d | 2011-01-28 11:20:46 +1100 | [diff] [blame] | 1710 | int startagain; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1711 | |
| 1712 | restarts = 0; |
| 1713 | dqpout = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1714 | |
| 1715 | /* lockorder: hashchainlock, freelistlock, mplistlock, dqlock, dqflock */ |
Dave Chinner | 0fbca4d | 2011-01-28 11:20:46 +1100 | [diff] [blame] | 1716 | again: |
| 1717 | startagain = 0; |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 1718 | mutex_lock(&xfs_Gqm->qm_dqfrlist_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1719 | |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 1720 | list_for_each_entry(dqp, &xfs_Gqm->qm_dqfrlist, q_freelist) { |
Dave Chinner | 3a25404 | 2010-04-13 15:06:48 +1000 | [diff] [blame] | 1721 | struct xfs_mount *mp = dqp->q_mount; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1722 | xfs_dqlock(dqp); |
| 1723 | |
| 1724 | /* |
| 1725 | * We are racing with dqlookup here. Naturally we don't |
| 1726 | * want to reclaim a dquot that lookup wants. We release the |
| 1727 | * freelist lock and start over, so that lookup will grab |
| 1728 | * both the dquot and the freelistlock. |
| 1729 | */ |
| 1730 | if (dqp->dq_flags & XFS_DQ_WANT) { |
| 1731 | ASSERT(! (dqp->dq_flags & XFS_DQ_INACTIVE)); |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 1732 | |
| 1733 | trace_xfs_dqreclaim_want(dqp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1734 | XQM_STATS_INC(xqmstats.xs_qm_dqwants); |
Dave Chinner | 0fbca4d | 2011-01-28 11:20:46 +1100 | [diff] [blame] | 1735 | restarts++; |
| 1736 | startagain = 1; |
| 1737 | goto dqunlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1738 | } |
| 1739 | |
| 1740 | /* |
| 1741 | * If the dquot is inactive, we are assured that it is |
| 1742 | * not on the mplist or the hashlist, and that makes our |
| 1743 | * life easier. |
| 1744 | */ |
| 1745 | if (dqp->dq_flags & XFS_DQ_INACTIVE) { |
Dave Chinner | 3a25404 | 2010-04-13 15:06:48 +1000 | [diff] [blame] | 1746 | ASSERT(mp == NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1747 | ASSERT(! XFS_DQ_IS_DIRTY(dqp)); |
Dave Chinner | e6a81f1 | 2010-04-13 15:06:51 +1000 | [diff] [blame] | 1748 | ASSERT(list_empty(&dqp->q_hashlist)); |
Dave Chinner | 3a25404 | 2010-04-13 15:06:48 +1000 | [diff] [blame] | 1749 | ASSERT(list_empty(&dqp->q_mplist)); |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 1750 | list_del_init(&dqp->q_freelist); |
| 1751 | xfs_Gqm->qm_dqfrlist_cnt--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1752 | dqpout = dqp; |
| 1753 | XQM_STATS_INC(xqmstats.xs_qm_dqinact_reclaims); |
Dave Chinner | 0fbca4d | 2011-01-28 11:20:46 +1100 | [diff] [blame] | 1754 | goto dqunlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1755 | } |
| 1756 | |
| 1757 | ASSERT(dqp->q_hash); |
Dave Chinner | 3a25404 | 2010-04-13 15:06:48 +1000 | [diff] [blame] | 1758 | ASSERT(!list_empty(&dqp->q_mplist)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1759 | |
| 1760 | /* |
Dave Chinner | 0fbca4d | 2011-01-28 11:20:46 +1100 | [diff] [blame] | 1761 | * Try to grab the flush lock. If this dquot is in the process |
| 1762 | * of getting flushed to disk, we don't want to reclaim it. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1763 | */ |
Dave Chinner | 0fbca4d | 2011-01-28 11:20:46 +1100 | [diff] [blame] | 1764 | if (!xfs_dqflock_nowait(dqp)) |
| 1765 | goto dqunlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1766 | |
| 1767 | /* |
| 1768 | * We have the flush lock so we know that this is not in the |
| 1769 | * process of being flushed. So, if this is dirty, flush it |
| 1770 | * DELWRI so that we don't get a freelist infested with |
| 1771 | * dirty dquots. |
| 1772 | */ |
| 1773 | if (XFS_DQ_IS_DIRTY(dqp)) { |
David Chinner | 3c56836 | 2008-04-10 12:20:24 +1000 | [diff] [blame] | 1774 | int error; |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 1775 | |
| 1776 | trace_xfs_dqreclaim_dirty(dqp); |
| 1777 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1778 | /* |
| 1779 | * We flush it delayed write, so don't bother |
| 1780 | * releasing the freelist lock. |
| 1781 | */ |
Christoph Hellwig | fdedf28 | 2011-12-06 21:58:10 +0000 | [diff] [blame] | 1782 | error = xfs_qm_dqflush(dqp, SYNC_TRYLOCK); |
David Chinner | 3c56836 | 2008-04-10 12:20:24 +1000 | [diff] [blame] | 1783 | if (error) { |
Dave Chinner | 5348778 | 2011-03-07 10:05:35 +1100 | [diff] [blame] | 1784 | xfs_warn(mp, "%s: dquot %p flush failed", |
| 1785 | __func__, dqp); |
David Chinner | 3c56836 | 2008-04-10 12:20:24 +1000 | [diff] [blame] | 1786 | } |
Dave Chinner | 0fbca4d | 2011-01-28 11:20:46 +1100 | [diff] [blame] | 1787 | goto dqunlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1788 | } |
| 1789 | |
Dave Chinner | 368e136 | 2010-04-13 15:06:50 +1000 | [diff] [blame] | 1790 | /* |
| 1791 | * We're trying to get the hashlock out of order. This races |
| 1792 | * with dqlookup; so, we giveup and goto the next dquot if |
| 1793 | * we couldn't get the hashlock. This way, we won't starve |
| 1794 | * a dqlookup process that holds the hashlock that is |
| 1795 | * waiting for the freelist lock. |
| 1796 | */ |
| 1797 | if (!mutex_trylock(&dqp->q_hash->qh_lock)) { |
| 1798 | restarts++; |
| 1799 | goto dqfunlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1800 | } |
| 1801 | |
Dave Chinner | 368e136 | 2010-04-13 15:06:50 +1000 | [diff] [blame] | 1802 | /* |
| 1803 | * This races with dquot allocation code as well as dqflush_all |
| 1804 | * and reclaim code. So, if we failed to grab the mplist lock, |
| 1805 | * giveup everything and start over. |
| 1806 | */ |
| 1807 | if (!mutex_trylock(&mp->m_quotainfo->qi_dqlist_lock)) { |
| 1808 | restarts++; |
Dave Chinner | 0fbca4d | 2011-01-28 11:20:46 +1100 | [diff] [blame] | 1809 | startagain = 1; |
| 1810 | goto qhunlock; |
Dave Chinner | 368e136 | 2010-04-13 15:06:50 +1000 | [diff] [blame] | 1811 | } |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 1812 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1813 | ASSERT(dqp->q_nrefs == 0); |
Dave Chinner | 3a25404 | 2010-04-13 15:06:48 +1000 | [diff] [blame] | 1814 | list_del_init(&dqp->q_mplist); |
| 1815 | mp->m_quotainfo->qi_dquots--; |
| 1816 | mp->m_quotainfo->qi_dqreclaims++; |
Dave Chinner | e6a81f1 | 2010-04-13 15:06:51 +1000 | [diff] [blame] | 1817 | list_del_init(&dqp->q_hashlist); |
| 1818 | dqp->q_hash->qh_version++; |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 1819 | list_del_init(&dqp->q_freelist); |
| 1820 | xfs_Gqm->qm_dqfrlist_cnt--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1821 | dqpout = dqp; |
Dave Chinner | 3a25404 | 2010-04-13 15:06:48 +1000 | [diff] [blame] | 1822 | mutex_unlock(&mp->m_quotainfo->qi_dqlist_lock); |
Dave Chinner | 0fbca4d | 2011-01-28 11:20:46 +1100 | [diff] [blame] | 1823 | qhunlock: |
Dave Chinner | 368e136 | 2010-04-13 15:06:50 +1000 | [diff] [blame] | 1824 | mutex_unlock(&dqp->q_hash->qh_lock); |
| 1825 | dqfunlock: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1826 | xfs_dqfunlock(dqp); |
Dave Chinner | 0fbca4d | 2011-01-28 11:20:46 +1100 | [diff] [blame] | 1827 | dqunlock: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1828 | xfs_dqunlock(dqp); |
| 1829 | if (dqpout) |
| 1830 | break; |
Dave Chinner | 368e136 | 2010-04-13 15:06:50 +1000 | [diff] [blame] | 1831 | if (restarts >= XFS_QM_RECLAIM_MAX_RESTARTS) |
Dave Chinner | 0fbca4d | 2011-01-28 11:20:46 +1100 | [diff] [blame] | 1832 | break; |
| 1833 | if (startagain) { |
| 1834 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
| 1835 | goto again; |
| 1836 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1837 | } |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 1838 | mutex_unlock(&xfs_Gqm->qm_dqfrlist_lock); |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1839 | return dqpout; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1840 | } |
| 1841 | |
Dave Chinner | 368e136 | 2010-04-13 15:06:50 +1000 | [diff] [blame] | 1842 | /* |
| 1843 | * Traverse the freelist of dquots and attempt to reclaim a maximum of |
| 1844 | * 'howmany' dquots. This operation races with dqlookup(), and attempts to |
| 1845 | * favor the lookup function ... |
| 1846 | */ |
| 1847 | STATIC int |
| 1848 | xfs_qm_shake_freelist( |
| 1849 | int howmany) |
| 1850 | { |
| 1851 | int nreclaimed = 0; |
| 1852 | xfs_dquot_t *dqp; |
| 1853 | |
| 1854 | if (howmany <= 0) |
| 1855 | return 0; |
| 1856 | |
| 1857 | while (nreclaimed < howmany) { |
| 1858 | dqp = xfs_qm_dqreclaim_one(); |
| 1859 | if (!dqp) |
| 1860 | return nreclaimed; |
| 1861 | xfs_qm_dqdestroy(dqp); |
| 1862 | nreclaimed++; |
| 1863 | } |
| 1864 | return nreclaimed; |
| 1865 | } |
| 1866 | |
| 1867 | /* |
| 1868 | * The kmem_shake interface is invoked when memory is running low. |
| 1869 | */ |
| 1870 | /* ARGSUSED */ |
| 1871 | STATIC int |
Dave Chinner | 7f8275d | 2010-07-19 14:56:17 +1000 | [diff] [blame] | 1872 | xfs_qm_shake( |
| 1873 | struct shrinker *shrink, |
Ying Han | 1495f23 | 2011-05-24 17:12:27 -0700 | [diff] [blame] | 1874 | struct shrink_control *sc) |
Dave Chinner | 368e136 | 2010-04-13 15:06:50 +1000 | [diff] [blame] | 1875 | { |
| 1876 | int ndqused, nfree, n; |
Ying Han | 1495f23 | 2011-05-24 17:12:27 -0700 | [diff] [blame] | 1877 | gfp_t gfp_mask = sc->gfp_mask; |
Dave Chinner | 368e136 | 2010-04-13 15:06:50 +1000 | [diff] [blame] | 1878 | |
| 1879 | if (!kmem_shake_allow(gfp_mask)) |
| 1880 | return 0; |
| 1881 | if (!xfs_Gqm) |
| 1882 | return 0; |
| 1883 | |
Dave Chinner | 3a8406f | 2010-04-13 15:06:52 +1000 | [diff] [blame] | 1884 | nfree = xfs_Gqm->qm_dqfrlist_cnt; /* free dquots */ |
Dave Chinner | 368e136 | 2010-04-13 15:06:50 +1000 | [diff] [blame] | 1885 | /* incore dquots in all f/s's */ |
| 1886 | ndqused = atomic_read(&xfs_Gqm->qm_totaldquots) - nfree; |
| 1887 | |
| 1888 | ASSERT(ndqused >= 0); |
| 1889 | |
| 1890 | if (nfree <= ndqused && nfree < ndquot) |
| 1891 | return 0; |
| 1892 | |
| 1893 | ndqused *= xfs_Gqm->qm_dqfree_ratio; /* target # of free dquots */ |
| 1894 | n = nfree - ndqused - ndquot; /* # over target */ |
| 1895 | |
| 1896 | return xfs_qm_shake_freelist(MAX(nfree, n)); |
| 1897 | } |
| 1898 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1899 | |
| 1900 | /*------------------------------------------------------------------*/ |
| 1901 | |
| 1902 | /* |
| 1903 | * Return a new incore dquot. Depending on the number of |
| 1904 | * dquots in the system, we either allocate a new one on the kernel heap, |
| 1905 | * or reclaim a free one. |
| 1906 | * Return value is B_TRUE if we allocated a new dquot, B_FALSE if we managed |
| 1907 | * to reclaim an existing one from the freelist. |
| 1908 | */ |
| 1909 | boolean_t |
| 1910 | xfs_qm_dqalloc_incore( |
| 1911 | xfs_dquot_t **O_dqpp) |
| 1912 | { |
| 1913 | xfs_dquot_t *dqp; |
| 1914 | |
| 1915 | /* |
| 1916 | * Check against high water mark to see if we want to pop |
| 1917 | * a nincompoop dquot off the freelist. |
| 1918 | */ |
| 1919 | if (atomic_read(&xfs_Gqm->qm_totaldquots) >= ndquot) { |
| 1920 | /* |
| 1921 | * Try to recycle a dquot from the freelist. |
| 1922 | */ |
| 1923 | if ((dqp = xfs_qm_dqreclaim_one())) { |
| 1924 | XQM_STATS_INC(xqmstats.xs_qm_dqreclaims); |
| 1925 | /* |
| 1926 | * Just zero the core here. The rest will get |
| 1927 | * reinitialized by caller. XXX we shouldn't even |
| 1928 | * do this zero ... |
| 1929 | */ |
| 1930 | memset(&dqp->q_core, 0, sizeof(dqp->q_core)); |
| 1931 | *O_dqpp = dqp; |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1932 | return B_FALSE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1933 | } |
| 1934 | XQM_STATS_INC(xqmstats.xs_qm_dqreclaim_misses); |
| 1935 | } |
| 1936 | |
| 1937 | /* |
| 1938 | * Allocate a brand new dquot on the kernel heap and return it |
| 1939 | * to the caller to initialize. |
| 1940 | */ |
| 1941 | ASSERT(xfs_Gqm->qm_dqzone != NULL); |
| 1942 | *O_dqpp = kmem_zone_zalloc(xfs_Gqm->qm_dqzone, KM_SLEEP); |
| 1943 | atomic_inc(&xfs_Gqm->qm_totaldquots); |
| 1944 | |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1945 | return B_TRUE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1946 | } |
| 1947 | |
| 1948 | |
| 1949 | /* |
| 1950 | * Start a transaction and write the incore superblock changes to |
| 1951 | * disk. flags parameter indicates which fields have changed. |
| 1952 | */ |
| 1953 | int |
| 1954 | xfs_qm_write_sb_changes( |
| 1955 | xfs_mount_t *mp, |
| 1956 | __int64_t flags) |
| 1957 | { |
| 1958 | xfs_trans_t *tp; |
| 1959 | int error; |
| 1960 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1961 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_SBCHANGE); |
| 1962 | if ((error = xfs_trans_reserve(tp, 0, |
| 1963 | mp->m_sb.sb_sectsize + 128, 0, |
| 1964 | 0, |
| 1965 | XFS_DEFAULT_LOG_COUNT))) { |
| 1966 | xfs_trans_cancel(tp, 0); |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 1967 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1968 | } |
| 1969 | |
| 1970 | xfs_mod_sb(tp, flags); |
David Chinner | e5720ee | 2008-04-10 12:21:18 +1000 | [diff] [blame] | 1971 | error = xfs_trans_commit(tp, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1972 | |
David Chinner | e5720ee | 2008-04-10 12:21:18 +1000 | [diff] [blame] | 1973 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1974 | } |
| 1975 | |
| 1976 | |
| 1977 | /* --------------- utility functions for vnodeops ---------------- */ |
| 1978 | |
| 1979 | |
| 1980 | /* |
Christoph Hellwig | 6c77b0e | 2010-10-06 18:41:17 +0000 | [diff] [blame] | 1981 | * Given an inode, a uid, gid and prid make sure that we have |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1982 | * allocated relevant dquot(s) on disk, and that we won't exceed inode |
| 1983 | * quotas by creating this file. |
| 1984 | * This also attaches dquot(s) to the given inode after locking it, |
| 1985 | * and returns the dquots corresponding to the uid and/or gid. |
| 1986 | * |
| 1987 | * in : inode (unlocked) |
| 1988 | * out : udquot, gdquot with references taken and unlocked |
| 1989 | */ |
| 1990 | int |
| 1991 | xfs_qm_vop_dqalloc( |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 1992 | struct xfs_inode *ip, |
| 1993 | uid_t uid, |
| 1994 | gid_t gid, |
| 1995 | prid_t prid, |
| 1996 | uint flags, |
| 1997 | struct xfs_dquot **O_udqpp, |
| 1998 | struct xfs_dquot **O_gdqpp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1999 | { |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2000 | struct xfs_mount *mp = ip->i_mount; |
| 2001 | struct xfs_dquot *uq, *gq; |
| 2002 | int error; |
| 2003 | uint lockflags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2004 | |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2005 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2006 | return 0; |
| 2007 | |
| 2008 | lockflags = XFS_ILOCK_EXCL; |
| 2009 | xfs_ilock(ip, lockflags); |
| 2010 | |
Christoph Hellwig | bd186aa | 2007-08-30 17:21:12 +1000 | [diff] [blame] | 2011 | if ((flags & XFS_QMOPT_INHERIT) && XFS_INHERIT_GID(ip)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2012 | gid = ip->i_d.di_gid; |
| 2013 | |
| 2014 | /* |
| 2015 | * Attach the dquot(s) to this inode, doing a dquot allocation |
| 2016 | * if necessary. The dquot(s) will not be locked. |
| 2017 | */ |
| 2018 | if (XFS_NOT_DQATTACHED(mp, ip)) { |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2019 | error = xfs_qm_dqattach_locked(ip, XFS_QMOPT_DQALLOC); |
| 2020 | if (error) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2021 | xfs_iunlock(ip, lockflags); |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 2022 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2023 | } |
| 2024 | } |
| 2025 | |
| 2026 | uq = gq = NULL; |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 2027 | if ((flags & XFS_QMOPT_UQUOTA) && XFS_IS_UQUOTA_ON(mp)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2028 | if (ip->i_d.di_uid != uid) { |
| 2029 | /* |
| 2030 | * What we need is the dquot that has this uid, and |
| 2031 | * if we send the inode to dqget, the uid of the inode |
| 2032 | * takes priority over what's sent in the uid argument. |
| 2033 | * We must unlock inode here before calling dqget if |
| 2034 | * we're not sending the inode, because otherwise |
| 2035 | * we'll deadlock by doing trans_reserve while |
| 2036 | * holding ilock. |
| 2037 | */ |
| 2038 | xfs_iunlock(ip, lockflags); |
| 2039 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t) uid, |
| 2040 | XFS_DQ_USER, |
| 2041 | XFS_QMOPT_DQALLOC | |
| 2042 | XFS_QMOPT_DOWARN, |
| 2043 | &uq))) { |
| 2044 | ASSERT(error != ENOENT); |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 2045 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2046 | } |
| 2047 | /* |
| 2048 | * Get the ilock in the right order. |
| 2049 | */ |
| 2050 | xfs_dqunlock(uq); |
| 2051 | lockflags = XFS_ILOCK_SHARED; |
| 2052 | xfs_ilock(ip, lockflags); |
| 2053 | } else { |
| 2054 | /* |
| 2055 | * Take an extra reference, because we'll return |
| 2056 | * this to caller |
| 2057 | */ |
| 2058 | ASSERT(ip->i_udquot); |
| 2059 | uq = ip->i_udquot; |
| 2060 | xfs_dqlock(uq); |
| 2061 | XFS_DQHOLD(uq); |
| 2062 | xfs_dqunlock(uq); |
| 2063 | } |
| 2064 | } |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 2065 | if ((flags & XFS_QMOPT_GQUOTA) && XFS_IS_GQUOTA_ON(mp)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2066 | if (ip->i_d.di_gid != gid) { |
| 2067 | xfs_iunlock(ip, lockflags); |
| 2068 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)gid, |
| 2069 | XFS_DQ_GROUP, |
| 2070 | XFS_QMOPT_DQALLOC | |
| 2071 | XFS_QMOPT_DOWARN, |
| 2072 | &gq))) { |
| 2073 | if (uq) |
| 2074 | xfs_qm_dqrele(uq); |
| 2075 | ASSERT(error != ENOENT); |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 2076 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2077 | } |
| 2078 | xfs_dqunlock(gq); |
| 2079 | lockflags = XFS_ILOCK_SHARED; |
| 2080 | xfs_ilock(ip, lockflags); |
| 2081 | } else { |
| 2082 | ASSERT(ip->i_gdquot); |
| 2083 | gq = ip->i_gdquot; |
| 2084 | xfs_dqlock(gq); |
| 2085 | XFS_DQHOLD(gq); |
| 2086 | xfs_dqunlock(gq); |
| 2087 | } |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 2088 | } else if ((flags & XFS_QMOPT_PQUOTA) && XFS_IS_PQUOTA_ON(mp)) { |
Arkadiusz Mi?kiewicz | 6743099 | 2010-09-26 06:10:18 +0000 | [diff] [blame] | 2089 | if (xfs_get_projid(ip) != prid) { |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 2090 | xfs_iunlock(ip, lockflags); |
| 2091 | if ((error = xfs_qm_dqget(mp, NULL, (xfs_dqid_t)prid, |
| 2092 | XFS_DQ_PROJ, |
| 2093 | XFS_QMOPT_DQALLOC | |
| 2094 | XFS_QMOPT_DOWARN, |
| 2095 | &gq))) { |
| 2096 | if (uq) |
| 2097 | xfs_qm_dqrele(uq); |
| 2098 | ASSERT(error != ENOENT); |
| 2099 | return (error); |
| 2100 | } |
| 2101 | xfs_dqunlock(gq); |
| 2102 | lockflags = XFS_ILOCK_SHARED; |
| 2103 | xfs_ilock(ip, lockflags); |
| 2104 | } else { |
| 2105 | ASSERT(ip->i_gdquot); |
| 2106 | gq = ip->i_gdquot; |
| 2107 | xfs_dqlock(gq); |
| 2108 | XFS_DQHOLD(gq); |
| 2109 | xfs_dqunlock(gq); |
| 2110 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2111 | } |
| 2112 | if (uq) |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 2113 | trace_xfs_dquot_dqalloc(ip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2114 | |
| 2115 | xfs_iunlock(ip, lockflags); |
| 2116 | if (O_udqpp) |
| 2117 | *O_udqpp = uq; |
| 2118 | else if (uq) |
| 2119 | xfs_qm_dqrele(uq); |
| 2120 | if (O_gdqpp) |
| 2121 | *O_gdqpp = gq; |
| 2122 | else if (gq) |
| 2123 | xfs_qm_dqrele(gq); |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 2124 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2125 | } |
| 2126 | |
| 2127 | /* |
| 2128 | * Actually transfer ownership, and do dquot modifications. |
| 2129 | * These were already reserved. |
| 2130 | */ |
| 2131 | xfs_dquot_t * |
| 2132 | xfs_qm_vop_chown( |
| 2133 | xfs_trans_t *tp, |
| 2134 | xfs_inode_t *ip, |
| 2135 | xfs_dquot_t **IO_olddq, |
| 2136 | xfs_dquot_t *newdq) |
| 2137 | { |
| 2138 | xfs_dquot_t *prevdq; |
Nathan Scott | 06d10dd | 2005-06-21 15:48:47 +1000 | [diff] [blame] | 2139 | uint bfield = XFS_IS_REALTIME_INODE(ip) ? |
| 2140 | XFS_TRANS_DQ_RTBCOUNT : XFS_TRANS_DQ_BCOUNT; |
| 2141 | |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2142 | |
Christoph Hellwig | 579aa9c | 2008-04-22 17:34:00 +1000 | [diff] [blame] | 2143 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2144 | ASSERT(XFS_IS_QUOTA_RUNNING(ip->i_mount)); |
| 2145 | |
| 2146 | /* old dquot */ |
| 2147 | prevdq = *IO_olddq; |
| 2148 | ASSERT(prevdq); |
| 2149 | ASSERT(prevdq != newdq); |
| 2150 | |
Nathan Scott | 06d10dd | 2005-06-21 15:48:47 +1000 | [diff] [blame] | 2151 | xfs_trans_mod_dquot(tp, prevdq, bfield, -(ip->i_d.di_nblocks)); |
| 2152 | xfs_trans_mod_dquot(tp, prevdq, XFS_TRANS_DQ_ICOUNT, -1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2153 | |
| 2154 | /* the sparkling new dquot */ |
Nathan Scott | 06d10dd | 2005-06-21 15:48:47 +1000 | [diff] [blame] | 2155 | xfs_trans_mod_dquot(tp, newdq, bfield, ip->i_d.di_nblocks); |
| 2156 | xfs_trans_mod_dquot(tp, newdq, XFS_TRANS_DQ_ICOUNT, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2157 | |
| 2158 | /* |
| 2159 | * Take an extra reference, because the inode |
| 2160 | * is going to keep this dquot pointer even |
| 2161 | * after the trans_commit. |
| 2162 | */ |
| 2163 | xfs_dqlock(newdq); |
| 2164 | XFS_DQHOLD(newdq); |
| 2165 | xfs_dqunlock(newdq); |
| 2166 | *IO_olddq = newdq; |
| 2167 | |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 2168 | return prevdq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2169 | } |
| 2170 | |
| 2171 | /* |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 2172 | * Quota reservations for setattr(AT_UID|AT_GID|AT_PROJID). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2173 | */ |
| 2174 | int |
| 2175 | xfs_qm_vop_chown_reserve( |
| 2176 | xfs_trans_t *tp, |
| 2177 | xfs_inode_t *ip, |
| 2178 | xfs_dquot_t *udqp, |
| 2179 | xfs_dquot_t *gdqp, |
| 2180 | uint flags) |
| 2181 | { |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2182 | xfs_mount_t *mp = ip->i_mount; |
Nathan Scott | 9a2a7de | 2006-03-31 13:04:49 +1000 | [diff] [blame] | 2183 | uint delblks, blkflags, prjflags = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2184 | xfs_dquot_t *unresudq, *unresgdq, *delblksudq, *delblksgdq; |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2185 | int error; |
| 2186 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2187 | |
Christoph Hellwig | 579aa9c | 2008-04-22 17:34:00 +1000 | [diff] [blame] | 2188 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2189 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
| 2190 | |
| 2191 | delblks = ip->i_delayed_blks; |
| 2192 | delblksudq = delblksgdq = unresudq = unresgdq = NULL; |
Nathan Scott | 06d10dd | 2005-06-21 15:48:47 +1000 | [diff] [blame] | 2193 | blkflags = XFS_IS_REALTIME_INODE(ip) ? |
| 2194 | XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2195 | |
| 2196 | if (XFS_IS_UQUOTA_ON(mp) && udqp && |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 2197 | ip->i_d.di_uid != (uid_t)be32_to_cpu(udqp->q_core.d_id)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2198 | delblksudq = udqp; |
| 2199 | /* |
| 2200 | * If there are delayed allocation blocks, then we have to |
| 2201 | * unreserve those from the old dquot, and add them to the |
| 2202 | * new dquot. |
| 2203 | */ |
| 2204 | if (delblks) { |
| 2205 | ASSERT(ip->i_udquot); |
| 2206 | unresudq = ip->i_udquot; |
| 2207 | } |
| 2208 | } |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 2209 | if (XFS_IS_OQUOTA_ON(ip->i_mount) && gdqp) { |
Nathan Scott | 9a2a7de | 2006-03-31 13:04:49 +1000 | [diff] [blame] | 2210 | if (XFS_IS_PQUOTA_ON(ip->i_mount) && |
Arkadiusz Mi?kiewicz | 6743099 | 2010-09-26 06:10:18 +0000 | [diff] [blame] | 2211 | xfs_get_projid(ip) != be32_to_cpu(gdqp->q_core.d_id)) |
Nathan Scott | 9a2a7de | 2006-03-31 13:04:49 +1000 | [diff] [blame] | 2212 | prjflags = XFS_QMOPT_ENOSPC; |
| 2213 | |
| 2214 | if (prjflags || |
| 2215 | (XFS_IS_GQUOTA_ON(ip->i_mount) && |
| 2216 | ip->i_d.di_gid != be32_to_cpu(gdqp->q_core.d_id))) { |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 2217 | delblksgdq = gdqp; |
| 2218 | if (delblks) { |
| 2219 | ASSERT(ip->i_gdquot); |
| 2220 | unresgdq = ip->i_gdquot; |
| 2221 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2222 | } |
| 2223 | } |
| 2224 | |
| 2225 | if ((error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount, |
| 2226 | delblksudq, delblksgdq, ip->i_d.di_nblocks, 1, |
Nathan Scott | 9a2a7de | 2006-03-31 13:04:49 +1000 | [diff] [blame] | 2227 | flags | blkflags | prjflags))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2228 | return (error); |
| 2229 | |
| 2230 | /* |
| 2231 | * Do the delayed blks reservations/unreservations now. Since, these |
| 2232 | * are done without the help of a transaction, if a reservation fails |
| 2233 | * its previous reservations won't be automatically undone by trans |
| 2234 | * code. So, we have to do it manually here. |
| 2235 | */ |
| 2236 | if (delblks) { |
| 2237 | /* |
| 2238 | * Do the reservations first. Unreservation can't fail. |
| 2239 | */ |
| 2240 | ASSERT(delblksudq || delblksgdq); |
| 2241 | ASSERT(unresudq || unresgdq); |
| 2242 | if ((error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, |
| 2243 | delblksudq, delblksgdq, (xfs_qcnt_t)delblks, 0, |
Nathan Scott | 9a2a7de | 2006-03-31 13:04:49 +1000 | [diff] [blame] | 2244 | flags | blkflags | prjflags))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2245 | return (error); |
| 2246 | xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, |
| 2247 | unresudq, unresgdq, -((xfs_qcnt_t)delblks), 0, |
Nathan Scott | 06d10dd | 2005-06-21 15:48:47 +1000 | [diff] [blame] | 2248 | blkflags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2249 | } |
| 2250 | |
| 2251 | return (0); |
| 2252 | } |
| 2253 | |
| 2254 | int |
| 2255 | xfs_qm_vop_rename_dqattach( |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2256 | struct xfs_inode **i_tab) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2257 | { |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2258 | struct xfs_mount *mp = i_tab[0]->i_mount; |
| 2259 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2260 | |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2261 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 2262 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2263 | |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2264 | for (i = 0; (i < 4 && i_tab[i]); i++) { |
| 2265 | struct xfs_inode *ip = i_tab[i]; |
| 2266 | int error; |
| 2267 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2268 | /* |
| 2269 | * Watch out for duplicate entries in the table. |
| 2270 | */ |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2271 | if (i == 0 || ip != i_tab[i-1]) { |
| 2272 | if (XFS_NOT_DQATTACHED(mp, ip)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2273 | error = xfs_qm_dqattach(ip, 0); |
| 2274 | if (error) |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 2275 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2276 | } |
| 2277 | } |
| 2278 | } |
Jesper Juhl | 014c254 | 2006-01-15 02:37:08 +0100 | [diff] [blame] | 2279 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2280 | } |
| 2281 | |
| 2282 | void |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2283 | xfs_qm_vop_create_dqattach( |
| 2284 | struct xfs_trans *tp, |
| 2285 | struct xfs_inode *ip, |
| 2286 | struct xfs_dquot *udqp, |
| 2287 | struct xfs_dquot *gdqp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2288 | { |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2289 | struct xfs_mount *mp = tp->t_mountp; |
| 2290 | |
| 2291 | if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2292 | return; |
| 2293 | |
Christoph Hellwig | 579aa9c | 2008-04-22 17:34:00 +1000 | [diff] [blame] | 2294 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2295 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2296 | |
| 2297 | if (udqp) { |
| 2298 | xfs_dqlock(udqp); |
| 2299 | XFS_DQHOLD(udqp); |
| 2300 | xfs_dqunlock(udqp); |
| 2301 | ASSERT(ip->i_udquot == NULL); |
| 2302 | ip->i_udquot = udqp; |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2303 | ASSERT(XFS_IS_UQUOTA_ON(mp)); |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 2304 | ASSERT(ip->i_d.di_uid == be32_to_cpu(udqp->q_core.d_id)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2305 | xfs_trans_mod_dquot(tp, udqp, XFS_TRANS_DQ_ICOUNT, 1); |
| 2306 | } |
| 2307 | if (gdqp) { |
| 2308 | xfs_dqlock(gdqp); |
| 2309 | XFS_DQHOLD(gdqp); |
| 2310 | xfs_dqunlock(gdqp); |
| 2311 | ASSERT(ip->i_gdquot == NULL); |
| 2312 | ip->i_gdquot = gdqp; |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 2313 | ASSERT(XFS_IS_OQUOTA_ON(mp)); |
| 2314 | ASSERT((XFS_IS_GQUOTA_ON(mp) ? |
Arkadiusz Mi?kiewicz | 6743099 | 2010-09-26 06:10:18 +0000 | [diff] [blame] | 2315 | ip->i_d.di_gid : xfs_get_projid(ip)) == |
Nathan Scott | ee2a4f7 | 2006-01-11 15:33:36 +1100 | [diff] [blame] | 2316 | be32_to_cpu(gdqp->q_core.d_id)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2317 | xfs_trans_mod_dquot(tp, gdqp, XFS_TRANS_DQ_ICOUNT, 1); |
| 2318 | } |
| 2319 | } |
| 2320 | |