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" |
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" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include "xfs_inode.h" |
| 31 | #include "xfs_bmap.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #include "xfs_rtalloc.h" |
| 33 | #include "xfs_error.h" |
| 34 | #include "xfs_itable.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include "xfs_attr.h" |
| 36 | #include "xfs_buf_item.h" |
| 37 | #include "xfs_trans_priv.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | #include "xfs_qm.h" |
| 39 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | /* |
| 41 | * returns the number of iovecs needed to log the given dquot item. |
| 42 | */ |
| 43 | /* ARGSUSED */ |
| 44 | STATIC uint |
| 45 | xfs_qm_dquot_logitem_size( |
| 46 | xfs_dq_logitem_t *logitem) |
| 47 | { |
| 48 | /* |
| 49 | * we need only two iovecs, one for the format, one for the real thing |
| 50 | */ |
| 51 | return (2); |
| 52 | } |
| 53 | |
| 54 | /* |
| 55 | * fills in the vector of log iovecs for the given dquot log item. |
| 56 | */ |
| 57 | STATIC void |
| 58 | xfs_qm_dquot_logitem_format( |
| 59 | xfs_dq_logitem_t *logitem, |
| 60 | xfs_log_iovec_t *logvec) |
| 61 | { |
| 62 | ASSERT(logitem); |
| 63 | ASSERT(logitem->qli_dquot); |
| 64 | |
| 65 | logvec->i_addr = (xfs_caddr_t)&logitem->qli_format; |
| 66 | logvec->i_len = sizeof(xfs_dq_logformat_t); |
Christoph Hellwig | 4139b3b | 2010-01-19 09:56:45 +0000 | [diff] [blame] | 67 | logvec->i_type = XLOG_REG_TYPE_QFORMAT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | logvec++; |
| 69 | logvec->i_addr = (xfs_caddr_t)&logitem->qli_dquot->q_core; |
| 70 | logvec->i_len = sizeof(xfs_disk_dquot_t); |
Christoph Hellwig | 4139b3b | 2010-01-19 09:56:45 +0000 | [diff] [blame] | 71 | logvec->i_type = XLOG_REG_TYPE_DQUOT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | |
| 73 | ASSERT(2 == logitem->qli_item.li_desc->lid_size); |
| 74 | logitem->qli_format.qlf_size = 2; |
| 75 | |
| 76 | } |
| 77 | |
| 78 | /* |
| 79 | * Increment the pin count of the given dquot. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | */ |
| 81 | STATIC void |
| 82 | xfs_qm_dquot_logitem_pin( |
| 83 | xfs_dq_logitem_t *logitem) |
| 84 | { |
Peter Leckie | bc3048e | 2008-10-30 17:05:04 +1100 | [diff] [blame] | 85 | xfs_dquot_t *dqp = logitem->qli_dquot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
Peter Leckie | d1de802 | 2008-10-30 17:05:18 +1100 | [diff] [blame] | 88 | atomic_inc(&dqp->q_pincount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | } |
| 90 | |
| 91 | /* |
| 92 | * Decrement the pin count of the given dquot, and wake up |
| 93 | * anyone in xfs_dqwait_unpin() if the count goes to 0. The |
Peter Leckie | bc3048e | 2008-10-30 17:05:04 +1100 | [diff] [blame] | 94 | * dquot must have been previously pinned with a call to |
| 95 | * xfs_qm_dquot_logitem_pin(). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | */ |
| 97 | /* ARGSUSED */ |
| 98 | STATIC void |
| 99 | xfs_qm_dquot_logitem_unpin( |
Christoph Hellwig | 9412e31 | 2010-06-23 18:11:15 +1000 | [diff] [blame^] | 100 | xfs_dq_logitem_t *logitem, |
| 101 | int remove) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | { |
Peter Leckie | bc3048e | 2008-10-30 17:05:04 +1100 | [diff] [blame] | 103 | xfs_dquot_t *dqp = logitem->qli_dquot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | |
Peter Leckie | bc3048e | 2008-10-30 17:05:04 +1100 | [diff] [blame] | 105 | ASSERT(atomic_read(&dqp->q_pincount) > 0); |
| 106 | if (atomic_dec_and_test(&dqp->q_pincount)) |
| 107 | wake_up(&dqp->q_pinwait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | } |
| 109 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | /* |
| 111 | * Given the logitem, this writes the corresponding dquot entry to disk |
| 112 | * asynchronously. This is called with the dquot entry securely locked; |
| 113 | * we simply get xfs_qm_dqflush() to do the work, and unlock the dquot |
| 114 | * at the end. |
| 115 | */ |
| 116 | STATIC void |
| 117 | xfs_qm_dquot_logitem_push( |
| 118 | xfs_dq_logitem_t *logitem) |
| 119 | { |
| 120 | xfs_dquot_t *dqp; |
David Chinner | 3c56836 | 2008-04-10 12:20:24 +1000 | [diff] [blame] | 121 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | |
| 123 | dqp = logitem->qli_dquot; |
| 124 | |
| 125 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
David Chinner | e1f49cf | 2008-08-13 16:41:43 +1000 | [diff] [blame] | 126 | ASSERT(!completion_done(&dqp->q_flush)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | |
| 128 | /* |
| 129 | * Since we were able to lock the dquot's flush lock and |
| 130 | * we found it on the AIL, the dquot must be dirty. This |
| 131 | * is because the dquot is removed from the AIL while still |
| 132 | * holding the flush lock in xfs_dqflush_done(). Thus, if |
| 133 | * we found it in the AIL and were able to obtain the flush |
| 134 | * lock without sleeping, then there must not have been |
| 135 | * anyone in the process of flushing the dquot. |
| 136 | */ |
Dave Chinner | 20026d9 | 2010-02-04 09:48:58 +1100 | [diff] [blame] | 137 | error = xfs_qm_dqflush(dqp, 0); |
David Chinner | 3c56836 | 2008-04-10 12:20:24 +1000 | [diff] [blame] | 138 | if (error) |
| 139 | xfs_fs_cmn_err(CE_WARN, dqp->q_mount, |
| 140 | "xfs_qm_dquot_logitem_push: push error %d on dqp %p", |
| 141 | error, dqp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | xfs_dqunlock(dqp); |
| 143 | } |
| 144 | |
| 145 | /*ARGSUSED*/ |
| 146 | STATIC xfs_lsn_t |
| 147 | xfs_qm_dquot_logitem_committed( |
| 148 | xfs_dq_logitem_t *l, |
| 149 | xfs_lsn_t lsn) |
| 150 | { |
| 151 | /* |
| 152 | * We always re-log the entire dquot when it becomes dirty, |
| 153 | * so, the latest copy _is_ the only one that matters. |
| 154 | */ |
| 155 | return (lsn); |
| 156 | } |
| 157 | |
| 158 | |
| 159 | /* |
| 160 | * This is called to wait for the given dquot to be unpinned. |
| 161 | * Most of these pin/unpin routines are plagiarized from inode code. |
| 162 | */ |
| 163 | void |
| 164 | xfs_qm_dqunpin_wait( |
| 165 | xfs_dquot_t *dqp) |
| 166 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
Peter Leckie | bc3048e | 2008-10-30 17:05:04 +1100 | [diff] [blame] | 168 | if (atomic_read(&dqp->q_pincount) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | |
| 171 | /* |
| 172 | * Give the log a push so we don't wait here too long. |
| 173 | */ |
Christoph Hellwig | a14a348 | 2010-01-19 09:56:46 +0000 | [diff] [blame] | 174 | xfs_log_force(dqp->q_mount, 0); |
Peter Leckie | bc3048e | 2008-10-30 17:05:04 +1100 | [diff] [blame] | 175 | wait_event(dqp->q_pinwait, (atomic_read(&dqp->q_pincount) == 0)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | } |
| 177 | |
| 178 | /* |
| 179 | * This is called when IOP_TRYLOCK returns XFS_ITEM_PUSHBUF to indicate that |
| 180 | * the dquot is locked by us, but the flush lock isn't. So, here we are |
| 181 | * going to see if the relevant dquot buffer is incore, waiting on DELWRI. |
| 182 | * If so, we want to push it out to help us take this item off the AIL as soon |
| 183 | * as possible. |
| 184 | * |
Donald Douwsma | 287f3da | 2007-10-11 17:36:05 +1000 | [diff] [blame] | 185 | * We must not be holding the AIL lock at this point. Calling incore() to |
| 186 | * search the buffer cache can be a time consuming thing, and AIL lock is a |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | * spinlock. |
| 188 | */ |
| 189 | STATIC void |
| 190 | xfs_qm_dquot_logitem_pushbuf( |
| 191 | xfs_dq_logitem_t *qip) |
| 192 | { |
| 193 | xfs_dquot_t *dqp; |
| 194 | xfs_mount_t *mp; |
| 195 | xfs_buf_t *bp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | |
| 197 | dqp = qip->qli_dquot; |
| 198 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
| 199 | |
| 200 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | * If flushlock isn't locked anymore, chances are that the |
| 202 | * inode flush completed and the inode was taken off the AIL. |
| 203 | * So, just get out. |
| 204 | */ |
David Chinner | e1f49cf | 2008-08-13 16:41:43 +1000 | [diff] [blame] | 205 | if (completion_done(&dqp->q_flush) || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | ((qip->qli_item.li_flags & XFS_LI_IN_AIL) == 0)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | xfs_dqunlock(dqp); |
| 208 | return; |
| 209 | } |
| 210 | mp = dqp->q_mount; |
| 211 | bp = xfs_incore(mp->m_ddev_targp, qip->qli_format.qlf_blkno, |
Christoph Hellwig | 8a7b8a8 | 2010-04-20 17:01:30 +1000 | [diff] [blame] | 212 | mp->m_quotainfo->qi_dqchunklen, XBF_TRYLOCK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | xfs_dqunlock(dqp); |
Dave Chinner | d808f61 | 2010-02-02 10:13:42 +1100 | [diff] [blame] | 214 | if (!bp) |
| 215 | return; |
| 216 | if (XFS_BUF_ISDELAYWRITE(bp)) |
| 217 | xfs_buf_delwri_promote(bp); |
| 218 | xfs_buf_relse(bp); |
| 219 | return; |
| 220 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | } |
| 222 | |
| 223 | /* |
| 224 | * This is called to attempt to lock the dquot associated with this |
| 225 | * dquot log item. Don't sleep on the dquot lock or the flush lock. |
| 226 | * If the flush lock is already held, indicating that the dquot has |
| 227 | * been or is in the process of being flushed, then see if we can |
| 228 | * find the dquot's buffer in the buffer cache without sleeping. If |
| 229 | * we can and it is marked delayed write, then we want to send it out. |
| 230 | * We delay doing so until the push routine, though, to avoid sleeping |
| 231 | * in any device strategy routines. |
| 232 | */ |
| 233 | STATIC uint |
| 234 | xfs_qm_dquot_logitem_trylock( |
| 235 | xfs_dq_logitem_t *qip) |
| 236 | { |
| 237 | xfs_dquot_t *dqp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | |
| 239 | dqp = qip->qli_dquot; |
Peter Leckie | bc3048e | 2008-10-30 17:05:04 +1100 | [diff] [blame] | 240 | if (atomic_read(&dqp->q_pincount) > 0) |
Dave Chinner | d808f61 | 2010-02-02 10:13:42 +1100 | [diff] [blame] | 241 | return XFS_ITEM_PINNED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | |
| 243 | if (! xfs_qm_dqlock_nowait(dqp)) |
Dave Chinner | d808f61 | 2010-02-02 10:13:42 +1100 | [diff] [blame] | 244 | return XFS_ITEM_LOCKED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | |
David Chinner | e1f49cf | 2008-08-13 16:41:43 +1000 | [diff] [blame] | 246 | if (!xfs_dqflock_nowait(dqp)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | /* |
Dave Chinner | d808f61 | 2010-02-02 10:13:42 +1100 | [diff] [blame] | 248 | * dquot has already been flushed to the backing buffer, |
| 249 | * leave it locked, pushbuf routine will unlock it. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | */ |
Dave Chinner | d808f61 | 2010-02-02 10:13:42 +1100 | [diff] [blame] | 251 | return XFS_ITEM_PUSHBUF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | } |
| 253 | |
| 254 | ASSERT(qip->qli_item.li_flags & XFS_LI_IN_AIL); |
Dave Chinner | d808f61 | 2010-02-02 10:13:42 +1100 | [diff] [blame] | 255 | return XFS_ITEM_SUCCESS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | } |
| 257 | |
| 258 | |
| 259 | /* |
| 260 | * Unlock the dquot associated with the log item. |
| 261 | * Clear the fields of the dquot and dquot log item that |
| 262 | * are specific to the current transaction. If the |
| 263 | * hold flags is set, do not unlock the dquot. |
| 264 | */ |
| 265 | STATIC void |
| 266 | xfs_qm_dquot_logitem_unlock( |
| 267 | xfs_dq_logitem_t *ql) |
| 268 | { |
| 269 | xfs_dquot_t *dqp; |
| 270 | |
| 271 | ASSERT(ql != NULL); |
| 272 | dqp = ql->qli_dquot; |
| 273 | ASSERT(XFS_DQ_IS_LOCKED(dqp)); |
| 274 | |
| 275 | /* |
| 276 | * Clear the transaction pointer in the dquot |
| 277 | */ |
| 278 | dqp->q_transp = NULL; |
| 279 | |
| 280 | /* |
| 281 | * dquots are never 'held' from getting unlocked at the end of |
| 282 | * a transaction. Their locking and unlocking is hidden inside the |
| 283 | * transaction layer, within trans_commit. Hence, no LI_HOLD flag |
| 284 | * for the logitem. |
| 285 | */ |
| 286 | xfs_dqunlock(dqp); |
| 287 | } |
| 288 | |
| 289 | |
| 290 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | * this needs to stamp an lsn into the dquot, I think. |
| 292 | * rpc's that look at user dquot's would then have to |
| 293 | * push on the dependency recorded in the dquot |
| 294 | */ |
| 295 | /* ARGSUSED */ |
| 296 | STATIC void |
| 297 | xfs_qm_dquot_logitem_committing( |
| 298 | xfs_dq_logitem_t *l, |
| 299 | xfs_lsn_t lsn) |
| 300 | { |
| 301 | return; |
| 302 | } |
| 303 | |
| 304 | |
| 305 | /* |
| 306 | * This is the ops vector for dquots |
| 307 | */ |
David Chinner | 7989cb8 | 2007-02-10 18:34:56 +1100 | [diff] [blame] | 308 | static struct xfs_item_ops xfs_dquot_item_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | .iop_size = (uint(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_size, |
| 310 | .iop_format = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*)) |
| 311 | xfs_qm_dquot_logitem_format, |
| 312 | .iop_pin = (void(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_pin, |
Christoph Hellwig | 9412e31 | 2010-06-23 18:11:15 +1000 | [diff] [blame^] | 313 | .iop_unpin = (void(*)(xfs_log_item_t*, int))xfs_qm_dquot_logitem_unpin, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | .iop_trylock = (uint(*)(xfs_log_item_t*)) |
| 315 | xfs_qm_dquot_logitem_trylock, |
| 316 | .iop_unlock = (void(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_unlock, |
| 317 | .iop_committed = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t)) |
| 318 | xfs_qm_dquot_logitem_committed, |
| 319 | .iop_push = (void(*)(xfs_log_item_t*))xfs_qm_dquot_logitem_push, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | .iop_pushbuf = (void(*)(xfs_log_item_t*)) |
| 321 | xfs_qm_dquot_logitem_pushbuf, |
| 322 | .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t)) |
| 323 | xfs_qm_dquot_logitem_committing |
| 324 | }; |
| 325 | |
| 326 | /* |
| 327 | * Initialize the dquot log item for a newly allocated dquot. |
| 328 | * The dquot isn't locked at this point, but it isn't on any of the lists |
| 329 | * either, so we don't care. |
| 330 | */ |
| 331 | void |
| 332 | xfs_qm_dquot_logitem_init( |
| 333 | struct xfs_dquot *dqp) |
| 334 | { |
| 335 | xfs_dq_logitem_t *lp; |
| 336 | lp = &dqp->q_logitem; |
| 337 | |
Dave Chinner | 43f5efc | 2010-03-23 10:10:00 +1100 | [diff] [blame] | 338 | xfs_log_item_init(dqp->q_mount, &lp->qli_item, XFS_LI_DQUOT, |
| 339 | &xfs_dquot_item_ops); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | lp->qli_dquot = dqp; |
| 341 | lp->qli_format.qlf_type = XFS_LI_DQUOT; |
Christoph Hellwig | 1149d96 | 2005-11-02 15:01:12 +1100 | [diff] [blame] | 342 | lp->qli_format.qlf_id = be32_to_cpu(dqp->q_core.d_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | lp->qli_format.qlf_blkno = dqp->q_blkno; |
| 344 | lp->qli_format.qlf_len = 1; |
| 345 | /* |
| 346 | * This is just the offset of this dquot within its buffer |
| 347 | * (which is currently 1 FSB and probably won't change). |
| 348 | * Hence 32 bits for this offset should be just fine. |
| 349 | * Alternatively, we can store (bufoffset / sizeof(xfs_dqblk_t)) |
| 350 | * here, and recompute it at recovery time. |
| 351 | */ |
| 352 | lp->qli_format.qlf_boffset = (__uint32_t)dqp->q_bufoffset; |
| 353 | } |
| 354 | |
| 355 | /*------------------ QUOTAOFF LOG ITEMS -------------------*/ |
| 356 | |
| 357 | /* |
| 358 | * This returns the number of iovecs needed to log the given quotaoff item. |
| 359 | * We only need 1 iovec for an quotaoff item. It just logs the |
| 360 | * quotaoff_log_format structure. |
| 361 | */ |
| 362 | /*ARGSUSED*/ |
| 363 | STATIC uint |
| 364 | xfs_qm_qoff_logitem_size(xfs_qoff_logitem_t *qf) |
| 365 | { |
| 366 | return (1); |
| 367 | } |
| 368 | |
| 369 | /* |
| 370 | * This is called to fill in the vector of log iovecs for the |
| 371 | * given quotaoff log item. We use only 1 iovec, and we point that |
| 372 | * at the quotaoff_log_format structure embedded in the quotaoff item. |
| 373 | * It is at this point that we assert that all of the extent |
| 374 | * slots in the quotaoff item have been filled. |
| 375 | */ |
| 376 | STATIC void |
| 377 | xfs_qm_qoff_logitem_format(xfs_qoff_logitem_t *qf, |
| 378 | xfs_log_iovec_t *log_vector) |
| 379 | { |
| 380 | ASSERT(qf->qql_format.qf_type == XFS_LI_QUOTAOFF); |
| 381 | |
| 382 | log_vector->i_addr = (xfs_caddr_t)&(qf->qql_format); |
| 383 | log_vector->i_len = sizeof(xfs_qoff_logitem_t); |
Christoph Hellwig | 4139b3b | 2010-01-19 09:56:45 +0000 | [diff] [blame] | 384 | log_vector->i_type = XLOG_REG_TYPE_QUOTAOFF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | qf->qql_format.qf_size = 1; |
| 386 | } |
| 387 | |
| 388 | |
| 389 | /* |
| 390 | * Pinning has no meaning for an quotaoff item, so just return. |
| 391 | */ |
| 392 | /*ARGSUSED*/ |
| 393 | STATIC void |
| 394 | xfs_qm_qoff_logitem_pin(xfs_qoff_logitem_t *qf) |
| 395 | { |
| 396 | return; |
| 397 | } |
| 398 | |
| 399 | |
| 400 | /* |
| 401 | * Since pinning has no meaning for an quotaoff item, unpinning does |
| 402 | * not either. |
| 403 | */ |
| 404 | /*ARGSUSED*/ |
| 405 | STATIC void |
Christoph Hellwig | 9412e31 | 2010-06-23 18:11:15 +1000 | [diff] [blame^] | 406 | xfs_qm_qoff_logitem_unpin(xfs_qoff_logitem_t *qf, int remove) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | { |
| 408 | return; |
| 409 | } |
| 410 | |
| 411 | /* |
| 412 | * Quotaoff items have no locking, so just return success. |
| 413 | */ |
| 414 | /*ARGSUSED*/ |
| 415 | STATIC uint |
| 416 | xfs_qm_qoff_logitem_trylock(xfs_qoff_logitem_t *qf) |
| 417 | { |
| 418 | return XFS_ITEM_LOCKED; |
| 419 | } |
| 420 | |
| 421 | /* |
| 422 | * Quotaoff items have no locking or pushing, so return failure |
| 423 | * so that the caller doesn't bother with us. |
| 424 | */ |
| 425 | /*ARGSUSED*/ |
| 426 | STATIC void |
| 427 | xfs_qm_qoff_logitem_unlock(xfs_qoff_logitem_t *qf) |
| 428 | { |
| 429 | return; |
| 430 | } |
| 431 | |
| 432 | /* |
| 433 | * The quotaoff-start-item is logged only once and cannot be moved in the log, |
| 434 | * so simply return the lsn at which it's been logged. |
| 435 | */ |
| 436 | /*ARGSUSED*/ |
| 437 | STATIC xfs_lsn_t |
| 438 | xfs_qm_qoff_logitem_committed(xfs_qoff_logitem_t *qf, xfs_lsn_t lsn) |
| 439 | { |
| 440 | return (lsn); |
| 441 | } |
| 442 | |
| 443 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | * There isn't much you can do to push on an quotaoff item. It is simply |
| 445 | * stuck waiting for the log to be flushed to disk. |
| 446 | */ |
| 447 | /*ARGSUSED*/ |
| 448 | STATIC void |
| 449 | xfs_qm_qoff_logitem_push(xfs_qoff_logitem_t *qf) |
| 450 | { |
| 451 | return; |
| 452 | } |
| 453 | |
| 454 | |
| 455 | /*ARGSUSED*/ |
| 456 | STATIC xfs_lsn_t |
| 457 | xfs_qm_qoffend_logitem_committed( |
| 458 | xfs_qoff_logitem_t *qfe, |
| 459 | xfs_lsn_t lsn) |
| 460 | { |
| 461 | xfs_qoff_logitem_t *qfs; |
David Chinner | 783a2f6 | 2008-10-30 17:39:58 +1100 | [diff] [blame] | 462 | struct xfs_ail *ailp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | |
| 464 | qfs = qfe->qql_start_lip; |
David Chinner | 783a2f6 | 2008-10-30 17:39:58 +1100 | [diff] [blame] | 465 | ailp = qfs->qql_item.li_ailp; |
| 466 | spin_lock(&ailp->xa_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | /* |
| 468 | * Delete the qoff-start logitem from the AIL. |
David Chinner | 783a2f6 | 2008-10-30 17:39:58 +1100 | [diff] [blame] | 469 | * xfs_trans_ail_delete() drops the AIL lock. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | */ |
David Chinner | 783a2f6 | 2008-10-30 17:39:58 +1100 | [diff] [blame] | 471 | xfs_trans_ail_delete(ailp, (xfs_log_item_t *)qfs); |
Denys Vlasenko | f0e2d93 | 2008-05-19 16:31:57 +1000 | [diff] [blame] | 472 | kmem_free(qfs); |
| 473 | kmem_free(qfe); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | return (xfs_lsn_t)-1; |
| 475 | } |
| 476 | |
| 477 | /* |
| 478 | * XXX rcc - don't know quite what to do with this. I think we can |
| 479 | * just ignore it. The only time that isn't the case is if we allow |
| 480 | * the client to somehow see that quotas have been turned off in which |
| 481 | * we can't allow that to get back until the quotaoff hits the disk. |
| 482 | * So how would that happen? Also, do we need different routines for |
| 483 | * quotaoff start and quotaoff end? I suspect the answer is yes but |
| 484 | * to be sure, I need to look at the recovery code and see how quota off |
| 485 | * recovery is handled (do we roll forward or back or do something else). |
| 486 | * If we roll forwards or backwards, then we need two separate routines, |
| 487 | * one that does nothing and one that stamps in the lsn that matters |
| 488 | * (truly makes the quotaoff irrevocable). If we do something else, |
| 489 | * then maybe we don't need two. |
| 490 | */ |
| 491 | /* ARGSUSED */ |
| 492 | STATIC void |
| 493 | xfs_qm_qoff_logitem_committing(xfs_qoff_logitem_t *qip, xfs_lsn_t commit_lsn) |
| 494 | { |
| 495 | return; |
| 496 | } |
| 497 | |
| 498 | /* ARGSUSED */ |
| 499 | STATIC void |
| 500 | xfs_qm_qoffend_logitem_committing(xfs_qoff_logitem_t *qip, xfs_lsn_t commit_lsn) |
| 501 | { |
| 502 | return; |
| 503 | } |
| 504 | |
David Chinner | 7989cb8 | 2007-02-10 18:34:56 +1100 | [diff] [blame] | 505 | static struct xfs_item_ops xfs_qm_qoffend_logitem_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | .iop_size = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_size, |
| 507 | .iop_format = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*)) |
| 508 | xfs_qm_qoff_logitem_format, |
| 509 | .iop_pin = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_pin, |
Christoph Hellwig | 9412e31 | 2010-06-23 18:11:15 +1000 | [diff] [blame^] | 510 | .iop_unpin = (void(*)(xfs_log_item_t*, int))xfs_qm_qoff_logitem_unpin, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | .iop_trylock = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_trylock, |
| 512 | .iop_unlock = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_unlock, |
| 513 | .iop_committed = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t)) |
| 514 | xfs_qm_qoffend_logitem_committed, |
| 515 | .iop_push = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_push, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | .iop_pushbuf = NULL, |
| 517 | .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t)) |
| 518 | xfs_qm_qoffend_logitem_committing |
| 519 | }; |
| 520 | |
| 521 | /* |
| 522 | * This is the ops vector shared by all quotaoff-start log items. |
| 523 | */ |
David Chinner | 7989cb8 | 2007-02-10 18:34:56 +1100 | [diff] [blame] | 524 | static struct xfs_item_ops xfs_qm_qoff_logitem_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | .iop_size = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_size, |
| 526 | .iop_format = (void(*)(xfs_log_item_t*, xfs_log_iovec_t*)) |
| 527 | xfs_qm_qoff_logitem_format, |
| 528 | .iop_pin = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_pin, |
Christoph Hellwig | 9412e31 | 2010-06-23 18:11:15 +1000 | [diff] [blame^] | 529 | .iop_unpin = (void(*)(xfs_log_item_t*, int))xfs_qm_qoff_logitem_unpin, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | .iop_trylock = (uint(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_trylock, |
| 531 | .iop_unlock = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_unlock, |
| 532 | .iop_committed = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t)) |
| 533 | xfs_qm_qoff_logitem_committed, |
| 534 | .iop_push = (void(*)(xfs_log_item_t*))xfs_qm_qoff_logitem_push, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | .iop_pushbuf = NULL, |
| 536 | .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t)) |
| 537 | xfs_qm_qoff_logitem_committing |
| 538 | }; |
| 539 | |
| 540 | /* |
| 541 | * Allocate and initialize an quotaoff item of the correct quota type(s). |
| 542 | */ |
| 543 | xfs_qoff_logitem_t * |
| 544 | xfs_qm_qoff_logitem_init( |
| 545 | struct xfs_mount *mp, |
| 546 | xfs_qoff_logitem_t *start, |
| 547 | uint flags) |
| 548 | { |
| 549 | xfs_qoff_logitem_t *qf; |
| 550 | |
| 551 | qf = (xfs_qoff_logitem_t*) kmem_zalloc(sizeof(xfs_qoff_logitem_t), KM_SLEEP); |
| 552 | |
Dave Chinner | 43f5efc | 2010-03-23 10:10:00 +1100 | [diff] [blame] | 553 | xfs_log_item_init(mp, &qf->qql_item, XFS_LI_QUOTAOFF, start ? |
| 554 | &xfs_qm_qoffend_logitem_ops : &xfs_qm_qoff_logitem_ops); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | qf->qql_item.li_mountp = mp; |
| 556 | qf->qql_format.qf_type = XFS_LI_QUOTAOFF; |
| 557 | qf->qql_format.qf_flags = flags; |
| 558 | qf->qql_start_lip = start; |
| 559 | return (qf); |
| 560 | } |