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) 2000-2003 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" |
Dave Chinner | 6ca1c90 | 2013-08-12 20:49:26 +1000 | [diff] [blame] | 20 | #include "xfs_format.h" |
Dave Chinner | 239880e | 2013-10-23 10:50:10 +1100 | [diff] [blame] | 21 | #include "xfs_log_format.h" |
Dave Chinner | 70a9883c | 2013-10-23 10:36:05 +1100 | [diff] [blame] | 22 | #include "xfs_shared.h" |
Dave Chinner | 239880e | 2013-10-23 10:50:10 +1100 | [diff] [blame] | 23 | #include "xfs_trans_resv.h" |
Nathan Scott | a844f45 | 2005-11-02 14:38:42 +1100 | [diff] [blame] | 24 | #include "xfs_bit.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | #include "xfs_sb.h" |
| 26 | #include "xfs_ag.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include "xfs_mount.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include "xfs_inode.h" |
| 29 | #include "xfs_bmap.h" |
Dave Chinner | 6898811 | 2013-08-12 20:49:42 +1000 | [diff] [blame] | 30 | #include "xfs_bmap_util.h" |
Dave Chinner | 239880e | 2013-10-23 10:50:10 +1100 | [diff] [blame] | 31 | #include "xfs_alloc.h" |
| 32 | #include "xfs_quota.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include "xfs_error.h" |
Dave Chinner | 239880e | 2013-10-23 10:50:10 +1100 | [diff] [blame] | 34 | #include "xfs_trans.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include "xfs_buf_item.h" |
| 36 | #include "xfs_trans_space.h" |
| 37 | #include "xfs_trans_priv.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | #include "xfs_qm.h" |
Christoph Hellwig | 3fe58f3 | 2013-04-03 16:11:16 +1100 | [diff] [blame] | 39 | #include "xfs_cksum.h" |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 40 | #include "xfs_trace.h" |
Dave Chinner | 239880e | 2013-10-23 10:50:10 +1100 | [diff] [blame] | 41 | #include "xfs_log.h" |
Dave Chinner | a4fbe6a | 2013-10-23 10:51:50 +1100 | [diff] [blame] | 42 | #include "xfs_bmap_btree.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | /* |
Christoph Hellwig | bf72de3 | 2011-12-06 21:58:19 +0000 | [diff] [blame] | 45 | * Lock order: |
| 46 | * |
| 47 | * ip->i_lock |
Christoph Hellwig | 9f920f1 | 2012-03-13 08:52:35 +0000 | [diff] [blame] | 48 | * qi->qi_tree_lock |
Christoph Hellwig | b84a3a9 | 2012-03-14 11:53:34 -0500 | [diff] [blame] | 49 | * dquot->q_qlock (xfs_dqlock() and friends) |
| 50 | * dquot->q_flush (xfs_dqflock() and friends) |
| 51 | * qi->qi_lru_lock |
Christoph Hellwig | bf72de3 | 2011-12-06 21:58:19 +0000 | [diff] [blame] | 52 | * |
| 53 | * If two dquots need to be locked the order is user before group/project, |
| 54 | * otherwise by the lowest id first, see xfs_dqlock2. |
| 55 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | #ifdef DEBUG |
| 58 | xfs_buftarg_t *xfs_dqerror_target; |
| 59 | int xfs_do_dqerror; |
| 60 | int xfs_dqreq_num; |
| 61 | int xfs_dqerror_mod = 33; |
| 62 | #endif |
| 63 | |
Christoph Hellwig | a05931c | 2012-03-13 08:52:37 +0000 | [diff] [blame] | 64 | struct kmem_zone *xfs_qm_dqtrxzone; |
| 65 | static struct kmem_zone *xfs_qm_dqzone; |
| 66 | |
Dave Chinner | f112a04 | 2013-09-30 09:37:03 +1000 | [diff] [blame] | 67 | static struct lock_class_key xfs_dquot_group_class; |
| 68 | static struct lock_class_key xfs_dquot_project_class; |
Christoph Hellwig | 98b8c7a | 2009-01-19 02:03:25 +0100 | [diff] [blame] | 69 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | * This is called to free all the memory associated with a dquot |
| 72 | */ |
| 73 | void |
| 74 | xfs_qm_dqdestroy( |
| 75 | xfs_dquot_t *dqp) |
| 76 | { |
Christoph Hellwig | f8739c3 | 2012-03-13 08:52:34 +0000 | [diff] [blame] | 77 | ASSERT(list_empty(&dqp->q_lru)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | |
| 79 | mutex_destroy(&dqp->q_qlock); |
Christoph Hellwig | a05931c | 2012-03-13 08:52:37 +0000 | [diff] [blame] | 80 | kmem_zone_free(xfs_qm_dqzone, dqp); |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 81 | |
Christoph Hellwig | 48776fd | 2012-03-13 08:52:33 +0000 | [diff] [blame] | 82 | XFS_STATS_DEC(xs_qm_dquot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | } |
| 84 | |
| 85 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | * If default limits are in force, push them into the dquot now. |
| 87 | * We overwrite the dquot limits only if they are zero and this |
| 88 | * is not the root dquot. |
| 89 | */ |
| 90 | void |
| 91 | xfs_qm_adjust_dqlimits( |
Brian Foster | 4b6eae2e | 2013-03-18 10:51:45 -0400 | [diff] [blame] | 92 | struct xfs_mount *mp, |
| 93 | struct xfs_dquot *dq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | { |
Brian Foster | 4b6eae2e | 2013-03-18 10:51:45 -0400 | [diff] [blame] | 95 | struct xfs_quotainfo *q = mp->m_quotainfo; |
| 96 | struct xfs_disk_dquot *d = &dq->q_core; |
Brian Foster | b136645 | 2013-03-18 10:51:46 -0400 | [diff] [blame] | 97 | int prealloc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | |
| 99 | ASSERT(d->d_id); |
| 100 | |
Brian Foster | b136645 | 2013-03-18 10:51:46 -0400 | [diff] [blame] | 101 | if (q->qi_bsoftlimit && !d->d_blk_softlimit) { |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 102 | d->d_blk_softlimit = cpu_to_be64(q->qi_bsoftlimit); |
Brian Foster | b136645 | 2013-03-18 10:51:46 -0400 | [diff] [blame] | 103 | prealloc = 1; |
| 104 | } |
| 105 | if (q->qi_bhardlimit && !d->d_blk_hardlimit) { |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 106 | d->d_blk_hardlimit = cpu_to_be64(q->qi_bhardlimit); |
Brian Foster | b136645 | 2013-03-18 10:51:46 -0400 | [diff] [blame] | 107 | prealloc = 1; |
| 108 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | if (q->qi_isoftlimit && !d->d_ino_softlimit) |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 110 | d->d_ino_softlimit = cpu_to_be64(q->qi_isoftlimit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | if (q->qi_ihardlimit && !d->d_ino_hardlimit) |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 112 | d->d_ino_hardlimit = cpu_to_be64(q->qi_ihardlimit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | if (q->qi_rtbsoftlimit && !d->d_rtb_softlimit) |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 114 | d->d_rtb_softlimit = cpu_to_be64(q->qi_rtbsoftlimit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | if (q->qi_rtbhardlimit && !d->d_rtb_hardlimit) |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 116 | d->d_rtb_hardlimit = cpu_to_be64(q->qi_rtbhardlimit); |
Brian Foster | b136645 | 2013-03-18 10:51:46 -0400 | [diff] [blame] | 117 | |
| 118 | if (prealloc) |
| 119 | xfs_dquot_set_prealloc_limits(dq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | } |
| 121 | |
| 122 | /* |
| 123 | * Check the limits and timers of a dquot and start or reset timers |
| 124 | * if necessary. |
| 125 | * This gets called even when quota enforcement is OFF, which makes our |
| 126 | * life a little less complicated. (We just don't reject any quota |
| 127 | * reservations in that case, when enforcement is off). |
| 128 | * We also return 0 as the values of the timers in Q_GETQUOTA calls, when |
| 129 | * enforcement's off. |
| 130 | * In contrast, warnings are a little different in that they don't |
Nathan Scott | 754002b | 2005-06-21 15:49:06 +1000 | [diff] [blame] | 131 | * 'automatically' get started when limits get exceeded. They do |
| 132 | * get reset to zero, however, when we find the count to be under |
| 133 | * the soft limit (they are only ever set non-zero via userspace). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | */ |
| 135 | void |
| 136 | xfs_qm_adjust_dqtimers( |
| 137 | xfs_mount_t *mp, |
| 138 | xfs_disk_dquot_t *d) |
| 139 | { |
| 140 | ASSERT(d->d_id); |
| 141 | |
Christoph Hellwig | ea15ab3 | 2011-07-13 13:43:50 +0200 | [diff] [blame] | 142 | #ifdef DEBUG |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 143 | if (d->d_blk_hardlimit) |
| 144 | ASSERT(be64_to_cpu(d->d_blk_softlimit) <= |
| 145 | be64_to_cpu(d->d_blk_hardlimit)); |
| 146 | if (d->d_ino_hardlimit) |
| 147 | ASSERT(be64_to_cpu(d->d_ino_softlimit) <= |
| 148 | be64_to_cpu(d->d_ino_hardlimit)); |
| 149 | if (d->d_rtb_hardlimit) |
| 150 | ASSERT(be64_to_cpu(d->d_rtb_softlimit) <= |
| 151 | be64_to_cpu(d->d_rtb_hardlimit)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | #endif |
Christoph Hellwig | ea15ab3 | 2011-07-13 13:43:50 +0200 | [diff] [blame] | 153 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | if (!d->d_btimer) { |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 155 | if ((d->d_blk_softlimit && |
Mitsuo Hayasaka | d0a3fe6 | 2012-02-06 12:50:07 +0000 | [diff] [blame] | 156 | (be64_to_cpu(d->d_bcount) > |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 157 | be64_to_cpu(d->d_blk_softlimit))) || |
| 158 | (d->d_blk_hardlimit && |
Mitsuo Hayasaka | d0a3fe6 | 2012-02-06 12:50:07 +0000 | [diff] [blame] | 159 | (be64_to_cpu(d->d_bcount) > |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 160 | be64_to_cpu(d->d_blk_hardlimit)))) { |
| 161 | d->d_btimer = cpu_to_be32(get_seconds() + |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 162 | mp->m_quotainfo->qi_btimelimit); |
Nathan Scott | 754002b | 2005-06-21 15:49:06 +1000 | [diff] [blame] | 163 | } else { |
| 164 | d->d_bwarns = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | } |
| 166 | } else { |
| 167 | if ((!d->d_blk_softlimit || |
Mitsuo Hayasaka | d0a3fe6 | 2012-02-06 12:50:07 +0000 | [diff] [blame] | 168 | (be64_to_cpu(d->d_bcount) <= |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 169 | be64_to_cpu(d->d_blk_softlimit))) && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | (!d->d_blk_hardlimit || |
Mitsuo Hayasaka | d0a3fe6 | 2012-02-06 12:50:07 +0000 | [diff] [blame] | 171 | (be64_to_cpu(d->d_bcount) <= |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 172 | be64_to_cpu(d->d_blk_hardlimit)))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | d->d_btimer = 0; |
| 174 | } |
| 175 | } |
| 176 | |
| 177 | if (!d->d_itimer) { |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 178 | if ((d->d_ino_softlimit && |
Mitsuo Hayasaka | d0a3fe6 | 2012-02-06 12:50:07 +0000 | [diff] [blame] | 179 | (be64_to_cpu(d->d_icount) > |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 180 | be64_to_cpu(d->d_ino_softlimit))) || |
| 181 | (d->d_ino_hardlimit && |
Mitsuo Hayasaka | d0a3fe6 | 2012-02-06 12:50:07 +0000 | [diff] [blame] | 182 | (be64_to_cpu(d->d_icount) > |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 183 | be64_to_cpu(d->d_ino_hardlimit)))) { |
| 184 | d->d_itimer = cpu_to_be32(get_seconds() + |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 185 | mp->m_quotainfo->qi_itimelimit); |
Nathan Scott | 754002b | 2005-06-21 15:49:06 +1000 | [diff] [blame] | 186 | } else { |
| 187 | d->d_iwarns = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | } |
| 189 | } else { |
| 190 | if ((!d->d_ino_softlimit || |
Mitsuo Hayasaka | d0a3fe6 | 2012-02-06 12:50:07 +0000 | [diff] [blame] | 191 | (be64_to_cpu(d->d_icount) <= |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 192 | be64_to_cpu(d->d_ino_softlimit))) && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | (!d->d_ino_hardlimit || |
Mitsuo Hayasaka | d0a3fe6 | 2012-02-06 12:50:07 +0000 | [diff] [blame] | 194 | (be64_to_cpu(d->d_icount) <= |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 195 | be64_to_cpu(d->d_ino_hardlimit)))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | d->d_itimer = 0; |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | if (!d->d_rtbtimer) { |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 201 | if ((d->d_rtb_softlimit && |
Mitsuo Hayasaka | d0a3fe6 | 2012-02-06 12:50:07 +0000 | [diff] [blame] | 202 | (be64_to_cpu(d->d_rtbcount) > |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 203 | be64_to_cpu(d->d_rtb_softlimit))) || |
| 204 | (d->d_rtb_hardlimit && |
Mitsuo Hayasaka | d0a3fe6 | 2012-02-06 12:50:07 +0000 | [diff] [blame] | 205 | (be64_to_cpu(d->d_rtbcount) > |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 206 | be64_to_cpu(d->d_rtb_hardlimit)))) { |
| 207 | d->d_rtbtimer = cpu_to_be32(get_seconds() + |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 208 | mp->m_quotainfo->qi_rtbtimelimit); |
Nathan Scott | 754002b | 2005-06-21 15:49:06 +1000 | [diff] [blame] | 209 | } else { |
| 210 | d->d_rtbwarns = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | } |
| 212 | } else { |
| 213 | if ((!d->d_rtb_softlimit || |
Mitsuo Hayasaka | d0a3fe6 | 2012-02-06 12:50:07 +0000 | [diff] [blame] | 214 | (be64_to_cpu(d->d_rtbcount) <= |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 215 | be64_to_cpu(d->d_rtb_softlimit))) && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | (!d->d_rtb_hardlimit || |
Mitsuo Hayasaka | d0a3fe6 | 2012-02-06 12:50:07 +0000 | [diff] [blame] | 217 | (be64_to_cpu(d->d_rtbcount) <= |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 218 | be64_to_cpu(d->d_rtb_hardlimit)))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | d->d_rtbtimer = 0; |
| 220 | } |
| 221 | } |
| 222 | } |
| 223 | |
| 224 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | * initialize a buffer full of dquots and log the whole thing |
| 226 | */ |
| 227 | STATIC void |
| 228 | xfs_qm_init_dquot_blk( |
| 229 | xfs_trans_t *tp, |
| 230 | xfs_mount_t *mp, |
| 231 | xfs_dqid_t id, |
| 232 | uint type, |
| 233 | xfs_buf_t *bp) |
| 234 | { |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 235 | struct xfs_quotainfo *q = mp->m_quotainfo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | xfs_dqblk_t *d; |
| 237 | int curid, i; |
| 238 | |
| 239 | ASSERT(tp); |
Christoph Hellwig | 0c842ad | 2011-07-08 14:36:19 +0200 | [diff] [blame] | 240 | ASSERT(xfs_buf_islocked(bp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | |
Chandra Seetharaman | 6292604 | 2011-07-22 23:40:15 +0000 | [diff] [blame] | 242 | d = bp->b_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | |
| 244 | /* |
| 245 | * ID of the first dquot in the block - id's are zero based. |
| 246 | */ |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 247 | curid = id - (id % q->qi_dqperchunk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | ASSERT(curid >= 0); |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 249 | memset(d, 0, BBTOB(q->qi_dqchunklen)); |
Christoph Hellwig | 49d35a5 | 2011-12-06 21:58:23 +0000 | [diff] [blame] | 250 | for (i = 0; i < q->qi_dqperchunk; i++, d++, curid++) { |
| 251 | d->dd_diskdq.d_magic = cpu_to_be16(XFS_DQUOT_MAGIC); |
| 252 | d->dd_diskdq.d_version = XFS_DQUOT_VERSION; |
| 253 | d->dd_diskdq.d_id = cpu_to_be32(curid); |
| 254 | d->dd_diskdq.d_flags = type; |
Dave Chinner | 6fcdc59 | 2013-06-03 15:28:46 +1000 | [diff] [blame] | 255 | if (xfs_sb_version_hascrc(&mp->m_sb)) { |
Christoph Hellwig | 3fe58f3 | 2013-04-03 16:11:16 +1100 | [diff] [blame] | 256 | uuid_copy(&d->dd_uuid, &mp->m_sb.sb_uuid); |
Dave Chinner | 6fcdc59 | 2013-06-03 15:28:46 +1000 | [diff] [blame] | 257 | xfs_update_cksum((char *)d, sizeof(struct xfs_dqblk), |
| 258 | XFS_DQUOT_CRC_OFF); |
| 259 | } |
Christoph Hellwig | 49d35a5 | 2011-12-06 21:58:23 +0000 | [diff] [blame] | 260 | } |
| 261 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | xfs_trans_dquot_buf(tp, bp, |
Dave Chinner | c115541 | 2010-05-07 11:05:19 +1000 | [diff] [blame] | 263 | (type & XFS_DQ_USER ? XFS_BLF_UDQUOT_BUF : |
| 264 | ((type & XFS_DQ_PROJ) ? XFS_BLF_PDQUOT_BUF : |
| 265 | XFS_BLF_GDQUOT_BUF))); |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 266 | xfs_trans_log_buf(tp, bp, 0, BBTOB(q->qi_dqchunklen) - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | } |
| 268 | |
Brian Foster | b136645 | 2013-03-18 10:51:46 -0400 | [diff] [blame] | 269 | /* |
| 270 | * Initialize the dynamic speculative preallocation thresholds. The lo/hi |
| 271 | * watermarks correspond to the soft and hard limits by default. If a soft limit |
| 272 | * is not specified, we use 95% of the hard limit. |
| 273 | */ |
| 274 | void |
| 275 | xfs_dquot_set_prealloc_limits(struct xfs_dquot *dqp) |
| 276 | { |
| 277 | __uint64_t space; |
| 278 | |
| 279 | dqp->q_prealloc_hi_wmark = be64_to_cpu(dqp->q_core.d_blk_hardlimit); |
| 280 | dqp->q_prealloc_lo_wmark = be64_to_cpu(dqp->q_core.d_blk_softlimit); |
| 281 | if (!dqp->q_prealloc_lo_wmark) { |
| 282 | dqp->q_prealloc_lo_wmark = dqp->q_prealloc_hi_wmark; |
| 283 | do_div(dqp->q_prealloc_lo_wmark, 100); |
| 284 | dqp->q_prealloc_lo_wmark *= 95; |
| 285 | } |
| 286 | |
| 287 | space = dqp->q_prealloc_hi_wmark; |
| 288 | |
| 289 | do_div(space, 100); |
| 290 | dqp->q_low_space[XFS_QLOWSP_1_PCNT] = space; |
| 291 | dqp->q_low_space[XFS_QLOWSP_3_PCNT] = space * 3; |
| 292 | dqp->q_low_space[XFS_QLOWSP_5_PCNT] = space * 5; |
| 293 | } |
| 294 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | /* |
| 296 | * Allocate a block and fill it with dquots. |
| 297 | * This is called when the bmapi finds a hole. |
| 298 | */ |
| 299 | STATIC int |
| 300 | xfs_qm_dqalloc( |
Tim Shimmin | efa092f | 2005-09-05 08:29:01 +1000 | [diff] [blame] | 301 | xfs_trans_t **tpp, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | xfs_mount_t *mp, |
| 303 | xfs_dquot_t *dqp, |
| 304 | xfs_inode_t *quotip, |
| 305 | xfs_fileoff_t offset_fsb, |
| 306 | xfs_buf_t **O_bpp) |
| 307 | { |
| 308 | xfs_fsblock_t firstblock; |
| 309 | xfs_bmap_free_t flist; |
| 310 | xfs_bmbt_irec_t map; |
| 311 | int nmaps, error, committed; |
| 312 | xfs_buf_t *bp; |
Tim Shimmin | efa092f | 2005-09-05 08:29:01 +1000 | [diff] [blame] | 313 | xfs_trans_t *tp = *tpp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | |
| 315 | ASSERT(tp != NULL); |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 316 | |
| 317 | trace_xfs_dqalloc(dqp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | |
| 319 | /* |
| 320 | * Initialize the bmap freelist prior to calling bmapi code. |
| 321 | */ |
Eric Sandeen | 9d87c31 | 2009-01-14 23:22:07 -0600 | [diff] [blame] | 322 | xfs_bmap_init(&flist, &firstblock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | xfs_ilock(quotip, XFS_ILOCK_EXCL); |
| 324 | /* |
| 325 | * Return if this type of quotas is turned off while we didn't |
| 326 | * have an inode lock |
| 327 | */ |
Chandra Seetharaman | 6967b96 | 2012-01-23 17:31:25 +0000 | [diff] [blame] | 328 | if (!xfs_this_quota_on(dqp->q_mount, dqp->dq_flags)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | xfs_iunlock(quotip, XFS_ILOCK_EXCL); |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 330 | return -ESRCH; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | } |
| 332 | |
Christoph Hellwig | ddc3415 | 2011-09-19 15:00:54 +0000 | [diff] [blame] | 333 | xfs_trans_ijoin(tp, quotip, XFS_ILOCK_EXCL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | nmaps = 1; |
Dave Chinner | c0dc782 | 2011-09-18 20:40:52 +0000 | [diff] [blame] | 335 | error = xfs_bmapi_write(tp, quotip, offset_fsb, |
| 336 | XFS_DQUOT_CLUSTER_SIZE_FSB, XFS_BMAPI_METADATA, |
| 337 | &firstblock, XFS_QM_DQALLOC_SPACE_RES(mp), |
| 338 | &map, &nmaps, &flist); |
| 339 | if (error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | goto error0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | ASSERT(map.br_blockcount == XFS_DQUOT_CLUSTER_SIZE_FSB); |
| 342 | ASSERT(nmaps == 1); |
| 343 | ASSERT((map.br_startblock != DELAYSTARTBLOCK) && |
| 344 | (map.br_startblock != HOLESTARTBLOCK)); |
| 345 | |
| 346 | /* |
| 347 | * Keep track of the blkno to save a lookup later |
| 348 | */ |
| 349 | dqp->q_blkno = XFS_FSB_TO_DADDR(mp, map.br_startblock); |
| 350 | |
| 351 | /* now we can just get the buffer (there's nothing to read yet) */ |
| 352 | bp = xfs_trans_get_buf(tp, mp->m_ddev_targp, |
| 353 | dqp->q_blkno, |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 354 | mp->m_quotainfo->qi_dqchunklen, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | 0); |
Dave Chinner | 36de955 | 2014-06-06 16:02:12 +1000 | [diff] [blame] | 356 | if (!bp) { |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 357 | error = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | goto error1; |
Dave Chinner | 36de955 | 2014-06-06 16:02:12 +1000 | [diff] [blame] | 359 | } |
Dave Chinner | 1813dd6 | 2012-11-14 17:54:40 +1100 | [diff] [blame] | 360 | bp->b_ops = &xfs_dquot_buf_ops; |
Chandra Seetharaman | 2a30f36d | 2011-09-20 13:56:55 +0000 | [diff] [blame] | 361 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | /* |
| 363 | * Make a chunk of dquots out of this buffer and log |
| 364 | * the entire thing. |
| 365 | */ |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 366 | xfs_qm_init_dquot_blk(tp, mp, be32_to_cpu(dqp->q_core.d_id), |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 367 | dqp->dq_flags & XFS_DQ_ALLTYPES, bp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | |
Tim Shimmin | efa092f | 2005-09-05 08:29:01 +1000 | [diff] [blame] | 369 | /* |
| 370 | * xfs_bmap_finish() may commit the current transaction and |
| 371 | * start a second transaction if the freelist is not empty. |
| 372 | * |
| 373 | * Since we still want to modify this buffer, we need to |
| 374 | * ensure that the buffer is not released on commit of |
| 375 | * the first transaction and ensure the buffer is added to the |
| 376 | * second transaction. |
| 377 | * |
| 378 | * If there is only one transaction then don't stop the buffer |
| 379 | * from being released when it commits later on. |
| 380 | */ |
| 381 | |
| 382 | xfs_trans_bhold(tp, bp); |
| 383 | |
Eric Sandeen | f7c99b6 | 2007-02-10 18:37:16 +1100 | [diff] [blame] | 384 | if ((error = xfs_bmap_finish(tpp, &flist, &committed))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | goto error1; |
| 386 | } |
| 387 | |
Tim Shimmin | efa092f | 2005-09-05 08:29:01 +1000 | [diff] [blame] | 388 | if (committed) { |
| 389 | tp = *tpp; |
| 390 | xfs_trans_bjoin(tp, bp); |
| 391 | } else { |
| 392 | xfs_trans_bhold_release(tp, bp); |
| 393 | } |
| 394 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | *O_bpp = bp; |
| 396 | return 0; |
| 397 | |
| 398 | error1: |
| 399 | xfs_bmap_cancel(&flist); |
| 400 | error0: |
| 401 | xfs_iunlock(quotip, XFS_ILOCK_EXCL); |
| 402 | |
Eric Sandeen | d99831f | 2014-06-22 15:03:54 +1000 | [diff] [blame] | 403 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | } |
Dave Chinner | 9aede1d | 2013-10-15 09:17:52 +1100 | [diff] [blame] | 405 | |
Dave Chinner | c631919 | 2012-11-14 17:50:13 +1100 | [diff] [blame] | 406 | STATIC int |
| 407 | xfs_qm_dqrepair( |
| 408 | struct xfs_mount *mp, |
| 409 | struct xfs_trans *tp, |
| 410 | struct xfs_dquot *dqp, |
| 411 | xfs_dqid_t firstid, |
| 412 | struct xfs_buf **bpp) |
| 413 | { |
| 414 | int error; |
| 415 | struct xfs_disk_dquot *ddq; |
| 416 | struct xfs_dqblk *d; |
| 417 | int i; |
| 418 | |
| 419 | /* |
| 420 | * Read the buffer without verification so we get the corrupted |
Dave Chinner | 612cfbf | 2012-11-14 17:52:32 +1100 | [diff] [blame] | 421 | * buffer returned to us. make sure we verify it on write, though. |
Dave Chinner | c631919 | 2012-11-14 17:50:13 +1100 | [diff] [blame] | 422 | */ |
| 423 | error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, dqp->q_blkno, |
| 424 | mp->m_quotainfo->qi_dqchunklen, |
| 425 | 0, bpp, NULL); |
| 426 | |
| 427 | if (error) { |
| 428 | ASSERT(*bpp == NULL); |
Eric Sandeen | b474c7a | 2014-06-22 15:04:54 +1000 | [diff] [blame] | 429 | return error; |
Dave Chinner | c631919 | 2012-11-14 17:50:13 +1100 | [diff] [blame] | 430 | } |
Dave Chinner | 1813dd6 | 2012-11-14 17:54:40 +1100 | [diff] [blame] | 431 | (*bpp)->b_ops = &xfs_dquot_buf_ops; |
Dave Chinner | c631919 | 2012-11-14 17:50:13 +1100 | [diff] [blame] | 432 | |
| 433 | ASSERT(xfs_buf_islocked(*bpp)); |
| 434 | d = (struct xfs_dqblk *)(*bpp)->b_addr; |
| 435 | |
| 436 | /* Do the actual repair of dquots in this buffer */ |
| 437 | for (i = 0; i < mp->m_quotainfo->qi_dqperchunk; i++) { |
| 438 | ddq = &d[i].dd_diskdq; |
Dave Chinner | 9aede1d | 2013-10-15 09:17:52 +1100 | [diff] [blame] | 439 | error = xfs_dqcheck(mp, ddq, firstid + i, |
Dave Chinner | c631919 | 2012-11-14 17:50:13 +1100 | [diff] [blame] | 440 | dqp->dq_flags & XFS_DQ_ALLTYPES, |
| 441 | XFS_QMOPT_DQREPAIR, "xfs_qm_dqrepair"); |
| 442 | if (error) { |
| 443 | /* repair failed, we're screwed */ |
| 444 | xfs_trans_brelse(tp, *bpp); |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 445 | return -EIO; |
Dave Chinner | c631919 | 2012-11-14 17:50:13 +1100 | [diff] [blame] | 446 | } |
| 447 | } |
| 448 | |
| 449 | return 0; |
| 450 | } |
| 451 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | /* |
| 453 | * Maps a dquot to the buffer containing its on-disk version. |
| 454 | * This returns a ptr to the buffer containing the on-disk dquot |
| 455 | * in the bpp param, and a ptr to the on-disk dquot within that buffer |
| 456 | */ |
| 457 | STATIC int |
| 458 | xfs_qm_dqtobp( |
Tim Shimmin | efa092f | 2005-09-05 08:29:01 +1000 | [diff] [blame] | 459 | xfs_trans_t **tpp, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | xfs_dquot_t *dqp, |
| 461 | xfs_disk_dquot_t **O_ddpp, |
| 462 | xfs_buf_t **O_bpp, |
| 463 | uint flags) |
| 464 | { |
Chandra Seetharaman | 113a568 | 2013-06-27 17:25:07 -0500 | [diff] [blame] | 465 | struct xfs_bmbt_irec map; |
| 466 | int nmaps = 1, error; |
| 467 | struct xfs_buf *bp; |
Chandra Seetharaman | 995961c | 2013-06-27 17:25:06 -0500 | [diff] [blame] | 468 | struct xfs_inode *quotip = xfs_dq_to_quota_inode(dqp); |
Chandra Seetharaman | 113a568 | 2013-06-27 17:25:07 -0500 | [diff] [blame] | 469 | struct xfs_mount *mp = dqp->q_mount; |
| 470 | xfs_dqid_t id = be32_to_cpu(dqp->q_core.d_id); |
| 471 | struct xfs_trans *tp = (tpp ? *tpp : NULL); |
Christoph Hellwig | f4df8ad | 2013-12-06 12:30:13 -0800 | [diff] [blame] | 472 | uint lock_mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | |
Christoph Hellwig | acecf1b | 2010-09-06 01:44:45 +0000 | [diff] [blame] | 474 | dqp->q_fileoffset = (xfs_fileoff_t)id / mp->m_quotainfo->qi_dqperchunk; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | |
Christoph Hellwig | f4df8ad | 2013-12-06 12:30:13 -0800 | [diff] [blame] | 476 | lock_mode = xfs_ilock_data_map_shared(quotip); |
Chandra Seetharaman | 6967b96 | 2012-01-23 17:31:25 +0000 | [diff] [blame] | 477 | if (!xfs_this_quota_on(dqp->q_mount, dqp->dq_flags)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | /* |
Christoph Hellwig | acecf1b | 2010-09-06 01:44:45 +0000 | [diff] [blame] | 479 | * Return if this type of quotas is turned off while we |
| 480 | * didn't have the quota inode lock. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | */ |
Christoph Hellwig | f4df8ad | 2013-12-06 12:30:13 -0800 | [diff] [blame] | 482 | xfs_iunlock(quotip, lock_mode); |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 483 | return -ESRCH; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | |
| 486 | /* |
Christoph Hellwig | acecf1b | 2010-09-06 01:44:45 +0000 | [diff] [blame] | 487 | * Find the block map; no allocations yet |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | */ |
Dave Chinner | 5c8ed20 | 2011-09-18 20:40:45 +0000 | [diff] [blame] | 489 | error = xfs_bmapi_read(quotip, dqp->q_fileoffset, |
| 490 | XFS_DQUOT_CLUSTER_SIZE_FSB, &map, &nmaps, 0); |
Christoph Hellwig | acecf1b | 2010-09-06 01:44:45 +0000 | [diff] [blame] | 491 | |
Christoph Hellwig | f4df8ad | 2013-12-06 12:30:13 -0800 | [diff] [blame] | 492 | xfs_iunlock(quotip, lock_mode); |
Christoph Hellwig | acecf1b | 2010-09-06 01:44:45 +0000 | [diff] [blame] | 493 | if (error) |
| 494 | return error; |
| 495 | |
| 496 | ASSERT(nmaps == 1); |
| 497 | ASSERT(map.br_blockcount == 1); |
| 498 | |
| 499 | /* |
| 500 | * Offset of dquot in the (fixed sized) dquot chunk. |
| 501 | */ |
| 502 | dqp->q_bufoffset = (id % mp->m_quotainfo->qi_dqperchunk) * |
| 503 | sizeof(xfs_dqblk_t); |
| 504 | |
| 505 | ASSERT(map.br_startblock != DELAYSTARTBLOCK); |
| 506 | if (map.br_startblock == HOLESTARTBLOCK) { |
| 507 | /* |
| 508 | * We don't allocate unless we're asked to |
| 509 | */ |
| 510 | if (!(flags & XFS_QMOPT_DQALLOC)) |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 511 | return -ENOENT; |
Christoph Hellwig | acecf1b | 2010-09-06 01:44:45 +0000 | [diff] [blame] | 512 | |
| 513 | ASSERT(tp); |
| 514 | error = xfs_qm_dqalloc(tpp, mp, dqp, quotip, |
| 515 | dqp->q_fileoffset, &bp); |
| 516 | if (error) |
| 517 | return error; |
| 518 | tp = *tpp; |
| 519 | } else { |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 520 | trace_xfs_dqtobp_read(dqp); |
| 521 | |
Christoph Hellwig | acecf1b | 2010-09-06 01:44:45 +0000 | [diff] [blame] | 522 | /* |
| 523 | * store the blkno etc so that we don't have to do the |
| 524 | * mapping all the time |
| 525 | */ |
| 526 | dqp->q_blkno = XFS_FSB_TO_DADDR(mp, map.br_startblock); |
| 527 | |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 528 | error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, |
| 529 | dqp->q_blkno, |
| 530 | mp->m_quotainfo->qi_dqchunklen, |
Dave Chinner | 1813dd6 | 2012-11-14 17:54:40 +1100 | [diff] [blame] | 531 | 0, &bp, &xfs_dquot_buf_ops); |
Dave Chinner | c631919 | 2012-11-14 17:50:13 +1100 | [diff] [blame] | 532 | |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 533 | if (error == -EFSCORRUPTED && (flags & XFS_QMOPT_DQREPAIR)) { |
Dave Chinner | c631919 | 2012-11-14 17:50:13 +1100 | [diff] [blame] | 534 | xfs_dqid_t firstid = (xfs_dqid_t)map.br_startoff * |
| 535 | mp->m_quotainfo->qi_dqperchunk; |
| 536 | ASSERT(bp == NULL); |
| 537 | error = xfs_qm_dqrepair(mp, tp, dqp, firstid, &bp); |
| 538 | } |
| 539 | |
| 540 | if (error) { |
| 541 | ASSERT(bp == NULL); |
Eric Sandeen | b474c7a | 2014-06-22 15:04:54 +1000 | [diff] [blame] | 542 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | } |
| 545 | |
Dave Chinner | c631919 | 2012-11-14 17:50:13 +1100 | [diff] [blame] | 546 | ASSERT(xfs_buf_islocked(bp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | *O_bpp = bp; |
Dave Chinner | c631919 | 2012-11-14 17:50:13 +1100 | [diff] [blame] | 548 | *O_ddpp = bp->b_addr + dqp->q_bufoffset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | |
Eric Sandeen | d99831f | 2014-06-22 15:03:54 +1000 | [diff] [blame] | 550 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | } |
| 552 | |
| 553 | |
| 554 | /* |
| 555 | * Read in the ondisk dquot using dqtobp() then copy it to an incore version, |
| 556 | * and release the buffer immediately. |
| 557 | * |
Christoph Hellwig | 97e7ade | 2011-12-06 21:58:24 +0000 | [diff] [blame] | 558 | * If XFS_QMOPT_DQALLOC is set, allocate a dquot on disk if it needed. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | */ |
Christoph Hellwig | 7ae4440 | 2011-12-06 21:58:25 +0000 | [diff] [blame] | 560 | int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | xfs_qm_dqread( |
Christoph Hellwig | 97e7ade | 2011-12-06 21:58:24 +0000 | [diff] [blame] | 562 | struct xfs_mount *mp, |
| 563 | xfs_dqid_t id, |
| 564 | uint type, |
| 565 | uint flags, |
| 566 | struct xfs_dquot **O_dqpp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | { |
Christoph Hellwig | 97e7ade | 2011-12-06 21:58:24 +0000 | [diff] [blame] | 568 | struct xfs_dquot *dqp; |
| 569 | struct xfs_disk_dquot *ddqp; |
| 570 | struct xfs_buf *bp; |
| 571 | struct xfs_trans *tp = NULL; |
| 572 | int error; |
| 573 | int cancelflags = 0; |
Tim Shimmin | efa092f | 2005-09-05 08:29:01 +1000 | [diff] [blame] | 574 | |
Christoph Hellwig | 92b2e5b3 | 2012-02-01 13:57:20 +0000 | [diff] [blame] | 575 | |
Christoph Hellwig | a05931c | 2012-03-13 08:52:37 +0000 | [diff] [blame] | 576 | dqp = kmem_zone_zalloc(xfs_qm_dqzone, KM_SLEEP); |
Christoph Hellwig | 92b2e5b3 | 2012-02-01 13:57:20 +0000 | [diff] [blame] | 577 | |
| 578 | dqp->dq_flags = type; |
| 579 | dqp->q_core.d_id = cpu_to_be32(id); |
| 580 | dqp->q_mount = mp; |
Christoph Hellwig | f8739c3 | 2012-03-13 08:52:34 +0000 | [diff] [blame] | 581 | INIT_LIST_HEAD(&dqp->q_lru); |
Christoph Hellwig | 92b2e5b3 | 2012-02-01 13:57:20 +0000 | [diff] [blame] | 582 | mutex_init(&dqp->q_qlock); |
| 583 | init_waitqueue_head(&dqp->q_pinwait); |
| 584 | |
| 585 | /* |
| 586 | * Because we want to use a counting completion, complete |
| 587 | * the flush completion once to allow a single access to |
| 588 | * the flush completion without blocking. |
| 589 | */ |
| 590 | init_completion(&dqp->q_flush); |
| 591 | complete(&dqp->q_flush); |
| 592 | |
| 593 | /* |
| 594 | * Make sure group quotas have a different lock class than user |
| 595 | * quotas. |
| 596 | */ |
Dave Chinner | f112a04 | 2013-09-30 09:37:03 +1000 | [diff] [blame] | 597 | switch (type) { |
| 598 | case XFS_DQ_USER: |
| 599 | /* uses the default lock class */ |
| 600 | break; |
| 601 | case XFS_DQ_GROUP: |
| 602 | lockdep_set_class(&dqp->q_qlock, &xfs_dquot_group_class); |
| 603 | break; |
| 604 | case XFS_DQ_PROJ: |
| 605 | lockdep_set_class(&dqp->q_qlock, &xfs_dquot_project_class); |
| 606 | break; |
| 607 | default: |
| 608 | ASSERT(0); |
| 609 | break; |
| 610 | } |
Christoph Hellwig | 92b2e5b3 | 2012-02-01 13:57:20 +0000 | [diff] [blame] | 611 | |
Christoph Hellwig | 48776fd | 2012-03-13 08:52:33 +0000 | [diff] [blame] | 612 | XFS_STATS_INC(xs_qm_dquot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 614 | trace_xfs_dqread(dqp); |
| 615 | |
Christoph Hellwig | 97e7ade | 2011-12-06 21:58:24 +0000 | [diff] [blame] | 616 | if (flags & XFS_QMOPT_DQALLOC) { |
| 617 | tp = xfs_trans_alloc(mp, XFS_TRANS_QM_DQALLOC); |
Brian Foster | 410b11a | 2014-02-07 14:55:54 +1100 | [diff] [blame] | 618 | error = xfs_trans_reserve(tp, &M_RES(mp)->tr_qm_dqalloc, |
Jie Liu | 3d3c8b5 | 2013-08-12 20:49:59 +1000 | [diff] [blame] | 619 | XFS_QM_DQALLOC_SPACE_RES(mp), 0); |
Christoph Hellwig | 97e7ade | 2011-12-06 21:58:24 +0000 | [diff] [blame] | 620 | if (error) |
| 621 | goto error1; |
| 622 | cancelflags = XFS_TRANS_RELEASE_LOG_RES; |
| 623 | } |
| 624 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | /* |
| 626 | * get a pointer to the on-disk dquot and the buffer containing it |
| 627 | * dqp already knows its own type (GROUP/USER). |
| 628 | */ |
Christoph Hellwig | 97e7ade | 2011-12-06 21:58:24 +0000 | [diff] [blame] | 629 | error = xfs_qm_dqtobp(&tp, dqp, &ddqp, &bp, flags); |
| 630 | if (error) { |
| 631 | /* |
| 632 | * This can happen if quotas got turned off (ESRCH), |
| 633 | * or if the dquot didn't exist on disk and we ask to |
| 634 | * allocate (ENOENT). |
| 635 | */ |
| 636 | trace_xfs_dqread_fail(dqp); |
| 637 | cancelflags |= XFS_TRANS_ABORT; |
| 638 | goto error1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | } |
| 640 | |
| 641 | /* copy everything from disk dquot to the incore dquot */ |
| 642 | memcpy(&dqp->q_core, ddqp, sizeof(xfs_disk_dquot_t)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | xfs_qm_dquot_logitem_init(dqp); |
| 644 | |
| 645 | /* |
| 646 | * Reservation counters are defined as reservation plus current usage |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 647 | * to avoid having to add every time. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | */ |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 649 | dqp->q_res_bcount = be64_to_cpu(ddqp->d_bcount); |
| 650 | dqp->q_res_icount = be64_to_cpu(ddqp->d_icount); |
| 651 | dqp->q_res_rtbcount = be64_to_cpu(ddqp->d_rtbcount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | |
Brian Foster | b136645 | 2013-03-18 10:51:46 -0400 | [diff] [blame] | 653 | /* initialize the dquot speculative prealloc thresholds */ |
| 654 | xfs_dquot_set_prealloc_limits(dqp); |
| 655 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | /* Mark the buf so that this will stay incore a little longer */ |
Christoph Hellwig | 38f2323 | 2011-10-10 16:52:45 +0000 | [diff] [blame] | 657 | xfs_buf_set_ref(bp, XFS_DQUOT_REF); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | |
| 659 | /* |
| 660 | * We got the buffer with a xfs_trans_read_buf() (in dqtobp()) |
| 661 | * So we need to release with xfs_trans_brelse(). |
| 662 | * The strategy here is identical to that of inodes; we lock |
| 663 | * the dquot in xfs_qm_dqget() before making it accessible to |
| 664 | * others. This is because dquots, like inodes, need a good level of |
| 665 | * concurrency, and we don't want to take locks on the entire buffers |
| 666 | * for dquot accesses. |
| 667 | * Note also that the dquot buffer may even be dirty at this point, if |
| 668 | * this particular dquot was repaired. We still aren't afraid to |
| 669 | * brelse it because we have the changes incore. |
| 670 | */ |
Christoph Hellwig | 0c842ad | 2011-07-08 14:36:19 +0200 | [diff] [blame] | 671 | ASSERT(xfs_buf_islocked(bp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | xfs_trans_brelse(tp, bp); |
| 673 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | if (tp) { |
Christoph Hellwig | 97e7ade | 2011-12-06 21:58:24 +0000 | [diff] [blame] | 675 | error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES); |
| 676 | if (error) |
| 677 | goto error0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | } |
| 679 | |
| 680 | *O_dqpp = dqp; |
Christoph Hellwig | 97e7ade | 2011-12-06 21:58:24 +0000 | [diff] [blame] | 681 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 682 | |
Christoph Hellwig | 97e7ade | 2011-12-06 21:58:24 +0000 | [diff] [blame] | 683 | error1: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | if (tp) |
| 685 | xfs_trans_cancel(tp, cancelflags); |
Christoph Hellwig | 97e7ade | 2011-12-06 21:58:24 +0000 | [diff] [blame] | 686 | error0: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | xfs_qm_dqdestroy(dqp); |
| 688 | *O_dqpp = NULL; |
Christoph Hellwig | 97e7ade | 2011-12-06 21:58:24 +0000 | [diff] [blame] | 689 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | } |
| 691 | |
| 692 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | * Given the file system, inode OR id, and type (UDQUOT/GDQUOT), return a |
| 694 | * a locked dquot, doing an allocation (if requested) as needed. |
| 695 | * When both an inode and an id are given, the inode's id takes precedence. |
| 696 | * That is, if the id changes while we don't hold the ilock inside this |
| 697 | * function, the new dquot is returned, not necessarily the one requested |
| 698 | * in the id argument. |
| 699 | */ |
| 700 | int |
| 701 | xfs_qm_dqget( |
| 702 | xfs_mount_t *mp, |
| 703 | xfs_inode_t *ip, /* locked inode (optional) */ |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 704 | xfs_dqid_t id, /* uid/projid/gid depending on type */ |
| 705 | uint type, /* XFS_DQ_USER/XFS_DQ_PROJ/XFS_DQ_GROUP */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | uint flags, /* DQALLOC, DQSUSER, DQREPAIR, DOWARN */ |
| 707 | xfs_dquot_t **O_dqpp) /* OUT : locked incore dquot */ |
| 708 | { |
Christoph Hellwig | 9f920f1 | 2012-03-13 08:52:35 +0000 | [diff] [blame] | 709 | struct xfs_quotainfo *qi = mp->m_quotainfo; |
Chandra Seetharaman | 329e087 | 2013-06-27 17:25:05 -0500 | [diff] [blame] | 710 | struct radix_tree_root *tree = xfs_dquot_tree(qi, type); |
Christoph Hellwig | 9f920f1 | 2012-03-13 08:52:35 +0000 | [diff] [blame] | 711 | struct xfs_dquot *dqp; |
| 712 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | |
| 714 | ASSERT(XFS_IS_QUOTA_RUNNING(mp)); |
| 715 | if ((! XFS_IS_UQUOTA_ON(mp) && type == XFS_DQ_USER) || |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 716 | (! XFS_IS_PQUOTA_ON(mp) && type == XFS_DQ_PROJ) || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | (! XFS_IS_GQUOTA_ON(mp) && type == XFS_DQ_GROUP)) { |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 718 | return -ESRCH; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 720 | |
| 721 | #ifdef DEBUG |
| 722 | if (xfs_do_dqerror) { |
| 723 | if ((xfs_dqerror_target == mp->m_ddev_targp) && |
| 724 | (xfs_dqreq_num++ % xfs_dqerror_mod) == 0) { |
Dave Chinner | 0b932cc | 2011-03-07 10:08:35 +1100 | [diff] [blame] | 725 | xfs_debug(mp, "Returning error in dqget"); |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 726 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 727 | } |
| 728 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | |
Nathan Scott | c8ad20f | 2005-06-21 15:38:48 +1000 | [diff] [blame] | 730 | ASSERT(type == XFS_DQ_USER || |
| 731 | type == XFS_DQ_PROJ || |
| 732 | type == XFS_DQ_GROUP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | if (ip) { |
Christoph Hellwig | 579aa9c | 2008-04-22 17:34:00 +1000 | [diff] [blame] | 734 | ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
Chandra Seetharaman | 3673141 | 2012-01-23 17:31:30 +0000 | [diff] [blame] | 735 | ASSERT(xfs_inode_dquot(ip, type) == NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | } |
| 737 | #endif |
Christoph Hellwig | 9267855 | 2011-12-06 21:58:18 +0000 | [diff] [blame] | 738 | |
| 739 | restart: |
Christoph Hellwig | 9f920f1 | 2012-03-13 08:52:35 +0000 | [diff] [blame] | 740 | mutex_lock(&qi->qi_tree_lock); |
| 741 | dqp = radix_tree_lookup(tree, id); |
| 742 | if (dqp) { |
| 743 | xfs_dqlock(dqp); |
| 744 | if (dqp->dq_flags & XFS_DQ_FREEING) { |
| 745 | xfs_dqunlock(dqp); |
| 746 | mutex_unlock(&qi->qi_tree_lock); |
| 747 | trace_xfs_dqget_freeing(dqp); |
| 748 | delay(1); |
| 749 | goto restart; |
| 750 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | |
Christoph Hellwig | 9f920f1 | 2012-03-13 08:52:35 +0000 | [diff] [blame] | 752 | dqp->q_nrefs++; |
| 753 | mutex_unlock(&qi->qi_tree_lock); |
| 754 | |
| 755 | trace_xfs_dqget_hit(dqp); |
Christoph Hellwig | 48776fd | 2012-03-13 08:52:33 +0000 | [diff] [blame] | 756 | XFS_STATS_INC(xs_qm_dqcachehits); |
Christoph Hellwig | 9f920f1 | 2012-03-13 08:52:35 +0000 | [diff] [blame] | 757 | *O_dqpp = dqp; |
| 758 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | } |
Christoph Hellwig | 9f920f1 | 2012-03-13 08:52:35 +0000 | [diff] [blame] | 760 | mutex_unlock(&qi->qi_tree_lock); |
| 761 | XFS_STATS_INC(xs_qm_dqcachemisses); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 762 | |
| 763 | /* |
| 764 | * Dquot cache miss. We don't want to keep the inode lock across |
| 765 | * a (potential) disk read. Also we don't want to deal with the lock |
| 766 | * ordering between quotainode and this inode. OTOH, dropping the inode |
| 767 | * lock here means dealing with a chown that can happen before |
| 768 | * we re-acquire the lock. |
| 769 | */ |
| 770 | if (ip) |
| 771 | xfs_iunlock(ip, XFS_ILOCK_EXCL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | |
Christoph Hellwig | 97e7ade | 2011-12-06 21:58:24 +0000 | [diff] [blame] | 773 | error = xfs_qm_dqread(mp, id, type, flags, &dqp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 774 | |
Christoph Hellwig | 7ae4440 | 2011-12-06 21:58:25 +0000 | [diff] [blame] | 775 | if (ip) |
| 776 | xfs_ilock(ip, XFS_ILOCK_EXCL); |
| 777 | |
| 778 | if (error) |
| 779 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | if (ip) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | /* |
| 783 | * A dquot could be attached to this inode by now, since |
| 784 | * we had dropped the ilock. |
| 785 | */ |
Chandra Seetharaman | 3673141 | 2012-01-23 17:31:30 +0000 | [diff] [blame] | 786 | if (xfs_this_quota_on(mp, type)) { |
Christoph Hellwig | 9f920f1 | 2012-03-13 08:52:35 +0000 | [diff] [blame] | 787 | struct xfs_dquot *dqp1; |
| 788 | |
Chandra Seetharaman | 3673141 | 2012-01-23 17:31:30 +0000 | [diff] [blame] | 789 | dqp1 = xfs_inode_dquot(ip, type); |
| 790 | if (dqp1) { |
Christoph Hellwig | 191f848 | 2010-04-20 17:01:53 +1000 | [diff] [blame] | 791 | xfs_qm_dqdestroy(dqp); |
Chandra Seetharaman | 3673141 | 2012-01-23 17:31:30 +0000 | [diff] [blame] | 792 | dqp = dqp1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | xfs_dqlock(dqp); |
| 794 | goto dqret; |
| 795 | } |
| 796 | } else { |
Chandra Seetharaman | 3673141 | 2012-01-23 17:31:30 +0000 | [diff] [blame] | 797 | /* inode stays locked on return */ |
| 798 | xfs_qm_dqdestroy(dqp); |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 799 | return -ESRCH; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | } |
| 801 | } |
| 802 | |
Christoph Hellwig | 9f920f1 | 2012-03-13 08:52:35 +0000 | [diff] [blame] | 803 | mutex_lock(&qi->qi_tree_lock); |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 804 | error = radix_tree_insert(tree, id, dqp); |
Christoph Hellwig | 9f920f1 | 2012-03-13 08:52:35 +0000 | [diff] [blame] | 805 | if (unlikely(error)) { |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 806 | WARN_ON(error != -EEXIST); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | |
Christoph Hellwig | 9f920f1 | 2012-03-13 08:52:35 +0000 | [diff] [blame] | 808 | /* |
| 809 | * Duplicate found. Just throw away the new dquot and start |
| 810 | * over. |
| 811 | */ |
| 812 | mutex_unlock(&qi->qi_tree_lock); |
| 813 | trace_xfs_dqget_dup(dqp); |
| 814 | xfs_qm_dqdestroy(dqp); |
| 815 | XFS_STATS_INC(xs_qm_dquot_dups); |
| 816 | goto restart; |
| 817 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 818 | |
| 819 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | * We return a locked dquot to the caller, with a reference taken |
| 821 | */ |
| 822 | xfs_dqlock(dqp); |
| 823 | dqp->q_nrefs = 1; |
| 824 | |
Christoph Hellwig | 9f920f1 | 2012-03-13 08:52:35 +0000 | [diff] [blame] | 825 | qi->qi_dquots++; |
Christoph Hellwig | 9f920f1 | 2012-03-13 08:52:35 +0000 | [diff] [blame] | 826 | mutex_unlock(&qi->qi_tree_lock); |
| 827 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | dqret: |
Christoph Hellwig | 579aa9c | 2008-04-22 17:34:00 +1000 | [diff] [blame] | 829 | ASSERT((ip == NULL) || xfs_isilocked(ip, XFS_ILOCK_EXCL)); |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 830 | trace_xfs_dqget_miss(dqp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | *O_dqpp = dqp; |
Eric Sandeen | d99831f | 2014-06-22 15:03:54 +1000 | [diff] [blame] | 832 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | } |
| 834 | |
Christoph Hellwig | f8739c3 | 2012-03-13 08:52:34 +0000 | [diff] [blame] | 835 | /* |
| 836 | * Release a reference to the dquot (decrement ref-count) and unlock it. |
| 837 | * |
| 838 | * If there is a group quota attached to this dquot, carefully release that |
| 839 | * too without tripping over deadlocks'n'stuff. |
| 840 | */ |
| 841 | void |
| 842 | xfs_qm_dqput( |
| 843 | struct xfs_dquot *dqp) |
| 844 | { |
| 845 | ASSERT(dqp->q_nrefs > 0); |
| 846 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
| 847 | |
| 848 | trace_xfs_dqput(dqp); |
| 849 | |
Dave Chinner | 3c3533757 | 2014-05-05 17:30:15 +1000 | [diff] [blame] | 850 | if (--dqp->q_nrefs == 0) { |
| 851 | struct xfs_quotainfo *qi = dqp->q_mount->m_quotainfo; |
| 852 | trace_xfs_dqput_free(dqp); |
| 853 | |
| 854 | if (list_lru_add(&qi->qi_lru, &dqp->q_lru)) |
| 855 | XFS_STATS_INC(xs_qm_dquot_unused); |
| 856 | } |
| 857 | xfs_dqunlock(dqp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | } |
| 859 | |
| 860 | /* |
| 861 | * Release a dquot. Flush it if dirty, then dqput() it. |
| 862 | * dquot must not be locked. |
| 863 | */ |
| 864 | void |
| 865 | xfs_qm_dqrele( |
| 866 | xfs_dquot_t *dqp) |
| 867 | { |
Christoph Hellwig | 7d09525 | 2009-06-08 15:33:32 +0200 | [diff] [blame] | 868 | if (!dqp) |
| 869 | return; |
| 870 | |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 871 | trace_xfs_dqrele(dqp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | |
| 873 | xfs_dqlock(dqp); |
| 874 | /* |
| 875 | * We don't care to flush it if the dquot is dirty here. |
| 876 | * That will create stutters that we want to avoid. |
| 877 | * Instead we do a delayed write when we try to reclaim |
| 878 | * a dirty dquot. Also xfs_sync will take part of the burden... |
| 879 | */ |
| 880 | xfs_qm_dqput(dqp); |
| 881 | } |
| 882 | |
Christoph Hellwig | ca30b2a | 2010-06-23 18:11:15 +1000 | [diff] [blame] | 883 | /* |
| 884 | * This is the dquot flushing I/O completion routine. It is called |
| 885 | * from interrupt level when the buffer containing the dquot is |
| 886 | * flushed to disk. It is responsible for removing the dquot logitem |
| 887 | * from the AIL if it has not been re-logged, and unlocking the dquot's |
| 888 | * flush lock. This behavior is very similar to that of inodes.. |
| 889 | */ |
| 890 | STATIC void |
| 891 | xfs_qm_dqflush_done( |
| 892 | struct xfs_buf *bp, |
| 893 | struct xfs_log_item *lip) |
| 894 | { |
| 895 | xfs_dq_logitem_t *qip = (struct xfs_dq_logitem *)lip; |
| 896 | xfs_dquot_t *dqp = qip->qli_dquot; |
| 897 | struct xfs_ail *ailp = lip->li_ailp; |
| 898 | |
| 899 | /* |
| 900 | * We only want to pull the item from the AIL if its |
| 901 | * location in the log has not changed since we started the flush. |
| 902 | * Thus, we only bother if the dquot's lsn has |
| 903 | * not changed. First we check the lsn outside the lock |
| 904 | * since it's cheaper, and then we recheck while |
| 905 | * holding the lock before removing the dquot from the AIL. |
| 906 | */ |
| 907 | if ((lip->li_flags & XFS_LI_IN_AIL) && |
| 908 | lip->li_lsn == qip->qli_flush_lsn) { |
| 909 | |
| 910 | /* xfs_trans_ail_delete() drops the AIL lock. */ |
| 911 | spin_lock(&ailp->xa_lock); |
| 912 | if (lip->li_lsn == qip->qli_flush_lsn) |
Dave Chinner | 04913fd | 2012-04-23 15:58:41 +1000 | [diff] [blame] | 913 | xfs_trans_ail_delete(ailp, lip, SHUTDOWN_CORRUPT_INCORE); |
Christoph Hellwig | ca30b2a | 2010-06-23 18:11:15 +1000 | [diff] [blame] | 914 | else |
| 915 | spin_unlock(&ailp->xa_lock); |
| 916 | } |
| 917 | |
| 918 | /* |
| 919 | * Release the dq's flush lock since we're done with it. |
| 920 | */ |
| 921 | xfs_dqfunlock(dqp); |
| 922 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 923 | |
| 924 | /* |
| 925 | * Write a modified dquot to disk. |
| 926 | * The dquot must be locked and the flush lock too taken by caller. |
| 927 | * The flush lock will not be unlocked until the dquot reaches the disk, |
| 928 | * but the dquot is free to be unlocked and modified by the caller |
| 929 | * in the interim. Dquot is still locked on return. This behavior is |
| 930 | * identical to that of inodes. |
| 931 | */ |
| 932 | int |
| 933 | xfs_qm_dqflush( |
Christoph Hellwig | fe7257f | 2012-04-23 15:58:37 +1000 | [diff] [blame] | 934 | struct xfs_dquot *dqp, |
| 935 | struct xfs_buf **bpp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 936 | { |
Christoph Hellwig | acecf1b | 2010-09-06 01:44:45 +0000 | [diff] [blame] | 937 | struct xfs_mount *mp = dqp->q_mount; |
| 938 | struct xfs_buf *bp; |
| 939 | struct xfs_disk_dquot *ddqp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 940 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 941 | |
| 942 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
David Chinner | e1f49cf | 2008-08-13 16:41:43 +1000 | [diff] [blame] | 943 | ASSERT(!completion_done(&dqp->q_flush)); |
Christoph Hellwig | acecf1b | 2010-09-06 01:44:45 +0000 | [diff] [blame] | 944 | |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 945 | trace_xfs_dqflush(dqp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 946 | |
Christoph Hellwig | fe7257f | 2012-04-23 15:58:37 +1000 | [diff] [blame] | 947 | *bpp = NULL; |
| 948 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 949 | xfs_qm_dqunpin_wait(dqp); |
| 950 | |
| 951 | /* |
| 952 | * This may have been unpinned because the filesystem is shutting |
| 953 | * down forcibly. If that's the case we must not write this dquot |
Christoph Hellwig | dea9609 | 2012-04-23 15:58:31 +1000 | [diff] [blame] | 954 | * to disk, because the log record didn't make it to disk. |
| 955 | * |
| 956 | * We also have to remove the log item from the AIL in this case, |
| 957 | * as we wait for an emptry AIL as part of the unmount process. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 958 | */ |
Christoph Hellwig | acecf1b | 2010-09-06 01:44:45 +0000 | [diff] [blame] | 959 | if (XFS_FORCED_SHUTDOWN(mp)) { |
Christoph Hellwig | dea9609 | 2012-04-23 15:58:31 +1000 | [diff] [blame] | 960 | struct xfs_log_item *lip = &dqp->q_logitem.qli_item; |
Christoph Hellwig | acecf1b | 2010-09-06 01:44:45 +0000 | [diff] [blame] | 961 | dqp->dq_flags &= ~XFS_DQ_DIRTY; |
Christoph Hellwig | dea9609 | 2012-04-23 15:58:31 +1000 | [diff] [blame] | 962 | |
| 963 | spin_lock(&mp->m_ail->xa_lock); |
| 964 | if (lip->li_flags & XFS_LI_IN_AIL) |
Dave Chinner | 04913fd | 2012-04-23 15:58:41 +1000 | [diff] [blame] | 965 | xfs_trans_ail_delete(mp->m_ail, lip, |
| 966 | SHUTDOWN_CORRUPT_INCORE); |
Christoph Hellwig | dea9609 | 2012-04-23 15:58:31 +1000 | [diff] [blame] | 967 | else |
| 968 | spin_unlock(&mp->m_ail->xa_lock); |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 969 | error = -EIO; |
Christoph Hellwig | fe7257f | 2012-04-23 15:58:37 +1000 | [diff] [blame] | 970 | goto out_unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 971 | } |
| 972 | |
| 973 | /* |
| 974 | * Get the buffer containing the on-disk dquot |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | */ |
Christoph Hellwig | acecf1b | 2010-09-06 01:44:45 +0000 | [diff] [blame] | 976 | error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, dqp->q_blkno, |
Dave Chinner | 5fd364f | 2014-08-04 12:43:26 +1000 | [diff] [blame] | 977 | mp->m_quotainfo->qi_dqchunklen, 0, &bp, |
| 978 | &xfs_dquot_buf_ops); |
Christoph Hellwig | fe7257f | 2012-04-23 15:58:37 +1000 | [diff] [blame] | 979 | if (error) |
| 980 | goto out_unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 981 | |
Christoph Hellwig | acecf1b | 2010-09-06 01:44:45 +0000 | [diff] [blame] | 982 | /* |
| 983 | * Calculate the location of the dquot inside the buffer. |
| 984 | */ |
Chandra Seetharaman | 6292604 | 2011-07-22 23:40:15 +0000 | [diff] [blame] | 985 | ddqp = bp->b_addr + dqp->q_bufoffset; |
Christoph Hellwig | acecf1b | 2010-09-06 01:44:45 +0000 | [diff] [blame] | 986 | |
| 987 | /* |
| 988 | * A simple sanity check in case we got a corrupted dquot.. |
| 989 | */ |
Dave Chinner | 9aede1d | 2013-10-15 09:17:52 +1100 | [diff] [blame] | 990 | error = xfs_dqcheck(mp, &dqp->q_core, be32_to_cpu(ddqp->d_id), 0, |
Dave Chinner | a0fa2b6 | 2011-03-07 10:01:35 +1100 | [diff] [blame] | 991 | XFS_QMOPT_DOWARN, "dqflush (incore copy)"); |
| 992 | if (error) { |
Christoph Hellwig | acecf1b | 2010-09-06 01:44:45 +0000 | [diff] [blame] | 993 | xfs_buf_relse(bp); |
| 994 | xfs_dqfunlock(dqp); |
| 995 | xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 996 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 997 | } |
| 998 | |
| 999 | /* This is the only portion of data that needs to persist */ |
Christoph Hellwig | acecf1b | 2010-09-06 01:44:45 +0000 | [diff] [blame] | 1000 | memcpy(ddqp, &dqp->q_core, sizeof(xfs_disk_dquot_t)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | |
| 1002 | /* |
| 1003 | * Clear the dirty field and remember the flush lsn for later use. |
| 1004 | */ |
Christoph Hellwig | acecf1b | 2010-09-06 01:44:45 +0000 | [diff] [blame] | 1005 | dqp->dq_flags &= ~XFS_DQ_DIRTY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1006 | |
David Chinner | 7b2e2a3 | 2008-10-30 17:39:12 +1100 | [diff] [blame] | 1007 | xfs_trans_ail_copy_lsn(mp->m_ail, &dqp->q_logitem.qli_flush_lsn, |
| 1008 | &dqp->q_logitem.qli_item.li_lsn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1009 | |
| 1010 | /* |
Christoph Hellwig | 3fe58f3 | 2013-04-03 16:11:16 +1100 | [diff] [blame] | 1011 | * copy the lsn into the on-disk dquot now while we have the in memory |
| 1012 | * dquot here. This can't be done later in the write verifier as we |
| 1013 | * can't get access to the log item at that point in time. |
Dave Chinner | 6fcdc59 | 2013-06-03 15:28:46 +1000 | [diff] [blame] | 1014 | * |
| 1015 | * We also calculate the CRC here so that the on-disk dquot in the |
| 1016 | * buffer always has a valid CRC. This ensures there is no possibility |
| 1017 | * of a dquot without an up-to-date CRC getting to disk. |
Christoph Hellwig | 3fe58f3 | 2013-04-03 16:11:16 +1100 | [diff] [blame] | 1018 | */ |
| 1019 | if (xfs_sb_version_hascrc(&mp->m_sb)) { |
| 1020 | struct xfs_dqblk *dqb = (struct xfs_dqblk *)ddqp; |
| 1021 | |
| 1022 | dqb->dd_lsn = cpu_to_be64(dqp->q_logitem.qli_item.li_lsn); |
Dave Chinner | 6fcdc59 | 2013-06-03 15:28:46 +1000 | [diff] [blame] | 1023 | xfs_update_cksum((char *)dqb, sizeof(struct xfs_dqblk), |
| 1024 | XFS_DQUOT_CRC_OFF); |
Christoph Hellwig | 3fe58f3 | 2013-04-03 16:11:16 +1100 | [diff] [blame] | 1025 | } |
| 1026 | |
| 1027 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1028 | * Attach an iodone routine so that we can remove this dquot from the |
| 1029 | * AIL and release the flush lock once the dquot is synced to disk. |
| 1030 | */ |
Christoph Hellwig | ca30b2a | 2010-06-23 18:11:15 +1000 | [diff] [blame] | 1031 | xfs_buf_attach_iodone(bp, xfs_qm_dqflush_done, |
| 1032 | &dqp->q_logitem.qli_item); |
| 1033 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1034 | /* |
| 1035 | * If the buffer is pinned then push on the log so we won't |
| 1036 | * get stuck waiting in the write for too long. |
| 1037 | */ |
Chandra Seetharaman | 811e64c | 2011-07-22 23:40:27 +0000 | [diff] [blame] | 1038 | if (xfs_buf_ispinned(bp)) { |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 1039 | trace_xfs_dqflush_force(dqp); |
Christoph Hellwig | a14a348 | 2010-01-19 09:56:46 +0000 | [diff] [blame] | 1040 | xfs_log_force(mp, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1041 | } |
| 1042 | |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 1043 | trace_xfs_dqflush_done(dqp); |
Christoph Hellwig | fe7257f | 2012-04-23 15:58:37 +1000 | [diff] [blame] | 1044 | *bpp = bp; |
| 1045 | return 0; |
Christoph Hellwig | 0b1b213 | 2009-12-14 23:14:59 +0000 | [diff] [blame] | 1046 | |
Christoph Hellwig | fe7257f | 2012-04-23 15:58:37 +1000 | [diff] [blame] | 1047 | out_unlock: |
| 1048 | xfs_dqfunlock(dqp); |
Dave Chinner | 2451337 | 2014-06-25 14:58:08 +1000 | [diff] [blame] | 1049 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1050 | } |
| 1051 | |
Christoph Hellwig | 5bb87a3 | 2009-01-19 02:03:19 +0100 | [diff] [blame] | 1052 | /* |
| 1053 | * Lock two xfs_dquot structures. |
| 1054 | * |
| 1055 | * To avoid deadlocks we always lock the quota structure with |
| 1056 | * the lowerd id first. |
| 1057 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1058 | void |
| 1059 | xfs_dqlock2( |
| 1060 | xfs_dquot_t *d1, |
| 1061 | xfs_dquot_t *d2) |
| 1062 | { |
| 1063 | if (d1 && d2) { |
| 1064 | ASSERT(d1 != d2); |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 1065 | if (be32_to_cpu(d1->q_core.d_id) > |
| 1066 | be32_to_cpu(d2->q_core.d_id)) { |
Christoph Hellwig | 5bb87a3 | 2009-01-19 02:03:19 +0100 | [diff] [blame] | 1067 | mutex_lock(&d2->q_qlock); |
| 1068 | mutex_lock_nested(&d1->q_qlock, XFS_QLOCK_NESTED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1069 | } else { |
Christoph Hellwig | 5bb87a3 | 2009-01-19 02:03:19 +0100 | [diff] [blame] | 1070 | mutex_lock(&d1->q_qlock); |
| 1071 | mutex_lock_nested(&d2->q_qlock, XFS_QLOCK_NESTED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1072 | } |
Christoph Hellwig | 5bb87a3 | 2009-01-19 02:03:19 +0100 | [diff] [blame] | 1073 | } else if (d1) { |
| 1074 | mutex_lock(&d1->q_qlock); |
| 1075 | } else if (d2) { |
| 1076 | mutex_lock(&d2->q_qlock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1077 | } |
| 1078 | } |
| 1079 | |
Christoph Hellwig | a05931c | 2012-03-13 08:52:37 +0000 | [diff] [blame] | 1080 | int __init |
| 1081 | xfs_qm_init(void) |
| 1082 | { |
| 1083 | xfs_qm_dqzone = |
| 1084 | kmem_zone_init(sizeof(struct xfs_dquot), "xfs_dquot"); |
| 1085 | if (!xfs_qm_dqzone) |
| 1086 | goto out; |
| 1087 | |
| 1088 | xfs_qm_dqtrxzone = |
| 1089 | kmem_zone_init(sizeof(struct xfs_dquot_acct), "xfs_dqtrx"); |
| 1090 | if (!xfs_qm_dqtrxzone) |
| 1091 | goto out_free_dqzone; |
| 1092 | |
| 1093 | return 0; |
| 1094 | |
| 1095 | out_free_dqzone: |
| 1096 | kmem_zone_destroy(xfs_qm_dqzone); |
| 1097 | out: |
| 1098 | return -ENOMEM; |
| 1099 | } |
| 1100 | |
Gerard Snitselaar | 1c2ccc6 | 2012-03-16 18:36:18 +0000 | [diff] [blame] | 1101 | void |
Christoph Hellwig | a05931c | 2012-03-13 08:52:37 +0000 | [diff] [blame] | 1102 | xfs_qm_exit(void) |
| 1103 | { |
| 1104 | kmem_zone_destroy(xfs_qm_dqtrxzone); |
| 1105 | kmem_zone_destroy(xfs_qm_dqzone); |
| 1106 | } |