2 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
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
7 * published by the Free Software Foundation.
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.
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
20 #include "xfs_types.h"
24 #include "xfs_trans.h"
27 #include "xfs_mount.h"
28 #include "xfs_trans_priv.h"
29 #include "xfs_bmap_btree.h"
30 #include "xfs_dinode.h"
31 #include "xfs_inode.h"
32 #include "xfs_inode_item.h"
33 #include "xfs_error.h"
34 #include "xfs_trace.h"
37 kmem_zone_t *xfs_ili_zone; /* inode log item zone */
39 static inline struct xfs_inode_log_item *INODE_ITEM(struct xfs_log_item *lip)
41 return container_of(lip, struct xfs_inode_log_item, ili_item);
46 * This returns the number of iovecs needed to log the given inode item.
48 * We need one iovec for the inode log format structure, one for the
49 * inode core, and possibly one for the inode data/extents/b-tree root
50 * and one for the inode attribute data/extents/b-tree root.
54 struct xfs_log_item *lip)
56 struct xfs_inode_log_item *iip = INODE_ITEM(lip);
57 struct xfs_inode *ip = iip->ili_inode;
61 * Only log the data/extents/b-tree root if there is something
64 iip->ili_format.ilf_fields |= XFS_ILOG_CORE;
66 switch (ip->i_d.di_format) {
67 case XFS_DINODE_FMT_EXTENTS:
68 iip->ili_format.ilf_fields &=
69 ~(XFS_ILOG_DDATA | XFS_ILOG_DBROOT |
70 XFS_ILOG_DEV | XFS_ILOG_UUID);
71 if ((iip->ili_format.ilf_fields & XFS_ILOG_DEXT) &&
72 (ip->i_d.di_nextents > 0) &&
73 (ip->i_df.if_bytes > 0)) {
74 ASSERT(ip->i_df.if_u1.if_extents != NULL);
77 iip->ili_format.ilf_fields &= ~XFS_ILOG_DEXT;
81 case XFS_DINODE_FMT_BTREE:
82 ASSERT(ip->i_df.if_ext_max ==
83 XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t));
84 iip->ili_format.ilf_fields &=
85 ~(XFS_ILOG_DDATA | XFS_ILOG_DEXT |
86 XFS_ILOG_DEV | XFS_ILOG_UUID);
87 if ((iip->ili_format.ilf_fields & XFS_ILOG_DBROOT) &&
88 (ip->i_df.if_broot_bytes > 0)) {
89 ASSERT(ip->i_df.if_broot != NULL);
92 ASSERT(!(iip->ili_format.ilf_fields &
94 #ifdef XFS_TRANS_DEBUG
95 if (iip->ili_root_size > 0) {
96 ASSERT(iip->ili_root_size ==
97 ip->i_df.if_broot_bytes);
98 ASSERT(memcmp(iip->ili_orig_root,
100 iip->ili_root_size) == 0);
102 ASSERT(ip->i_df.if_broot_bytes == 0);
105 iip->ili_format.ilf_fields &= ~XFS_ILOG_DBROOT;
109 case XFS_DINODE_FMT_LOCAL:
110 iip->ili_format.ilf_fields &=
111 ~(XFS_ILOG_DEXT | XFS_ILOG_DBROOT |
112 XFS_ILOG_DEV | XFS_ILOG_UUID);
113 if ((iip->ili_format.ilf_fields & XFS_ILOG_DDATA) &&
114 (ip->i_df.if_bytes > 0)) {
115 ASSERT(ip->i_df.if_u1.if_data != NULL);
116 ASSERT(ip->i_d.di_size > 0);
119 iip->ili_format.ilf_fields &= ~XFS_ILOG_DDATA;
123 case XFS_DINODE_FMT_DEV:
124 iip->ili_format.ilf_fields &=
125 ~(XFS_ILOG_DDATA | XFS_ILOG_DBROOT |
126 XFS_ILOG_DEXT | XFS_ILOG_UUID);
129 case XFS_DINODE_FMT_UUID:
130 iip->ili_format.ilf_fields &=
131 ~(XFS_ILOG_DDATA | XFS_ILOG_DBROOT |
132 XFS_ILOG_DEXT | XFS_ILOG_DEV);
141 * If there are no attributes associated with this file,
142 * then there cannot be anything more to log.
143 * Clear all attribute-related log flags.
145 if (!XFS_IFORK_Q(ip)) {
146 iip->ili_format.ilf_fields &=
147 ~(XFS_ILOG_ADATA | XFS_ILOG_ABROOT | XFS_ILOG_AEXT);
152 * Log any necessary attribute data.
154 switch (ip->i_d.di_aformat) {
155 case XFS_DINODE_FMT_EXTENTS:
156 iip->ili_format.ilf_fields &=
157 ~(XFS_ILOG_ADATA | XFS_ILOG_ABROOT);
158 if ((iip->ili_format.ilf_fields & XFS_ILOG_AEXT) &&
159 (ip->i_d.di_anextents > 0) &&
160 (ip->i_afp->if_bytes > 0)) {
161 ASSERT(ip->i_afp->if_u1.if_extents != NULL);
164 iip->ili_format.ilf_fields &= ~XFS_ILOG_AEXT;
168 case XFS_DINODE_FMT_BTREE:
169 iip->ili_format.ilf_fields &=
170 ~(XFS_ILOG_ADATA | XFS_ILOG_AEXT);
171 if ((iip->ili_format.ilf_fields & XFS_ILOG_ABROOT) &&
172 (ip->i_afp->if_broot_bytes > 0)) {
173 ASSERT(ip->i_afp->if_broot != NULL);
176 iip->ili_format.ilf_fields &= ~XFS_ILOG_ABROOT;
180 case XFS_DINODE_FMT_LOCAL:
181 iip->ili_format.ilf_fields &=
182 ~(XFS_ILOG_AEXT | XFS_ILOG_ABROOT);
183 if ((iip->ili_format.ilf_fields & XFS_ILOG_ADATA) &&
184 (ip->i_afp->if_bytes > 0)) {
185 ASSERT(ip->i_afp->if_u1.if_data != NULL);
188 iip->ili_format.ilf_fields &= ~XFS_ILOG_ADATA;
201 * This is called to fill in the vector of log iovecs for the
202 * given inode log item. It fills the first item with an inode
203 * log format structure, the second with the on-disk inode structure,
204 * and a possible third and/or fourth with the inode data/extents/b-tree
205 * root and inode attributes data/extents/b-tree root.
208 xfs_inode_item_format(
209 struct xfs_log_item *lip,
210 struct xfs_log_iovec *vecp)
212 struct xfs_inode_log_item *iip = INODE_ITEM(lip);
213 struct xfs_inode *ip = iip->ili_inode;
216 xfs_bmbt_rec_t *ext_buffer;
220 vecp->i_addr = &iip->ili_format;
221 vecp->i_len = sizeof(xfs_inode_log_format_t);
222 vecp->i_type = XLOG_REG_TYPE_IFORMAT;
227 * Make sure the linux inode is dirty. We do this before
228 * clearing i_update_core as the VFS will call back into
229 * XFS here and set i_update_core, so we need to dirty the
230 * inode first so that the ordering of i_update_core and
231 * unlogged modifications still works as described below.
233 xfs_mark_inode_dirty_sync(ip);
236 * Clear i_update_core if the timestamps (or any other
237 * non-transactional modification) need flushing/logging
238 * and we're about to log them with the rest of the core.
240 * This is the same logic as xfs_iflush() but this code can't
241 * run at the same time as xfs_iflush because we're in commit
242 * processing here and so we have the inode lock held in
243 * exclusive mode. Although it doesn't really matter
244 * for the timestamps if both routines were to grab the
245 * timestamps or not. That would be ok.
247 * We clear i_update_core before copying out the data.
248 * This is for coordination with our timestamp updates
249 * that don't hold the inode lock. They will always
250 * update the timestamps BEFORE setting i_update_core,
251 * so if we clear i_update_core after they set it we
252 * are guaranteed to see their updates to the timestamps
253 * either here. Likewise, if they set it after we clear it
254 * here, we'll see it either on the next commit of this
255 * inode or the next time the inode gets flushed via
256 * xfs_iflush(). This depends on strongly ordered memory
257 * semantics, but we have that. We use the SYNCHRONIZE
258 * macro to make sure that the compiler does not reorder
259 * the i_update_core access below the data copy below.
261 if (ip->i_update_core) {
262 ip->i_update_core = 0;
267 * Make sure to get the latest timestamps from the Linux inode.
269 xfs_synchronize_times(ip);
271 vecp->i_addr = &ip->i_d;
272 vecp->i_len = sizeof(struct xfs_icdinode);
273 vecp->i_type = XLOG_REG_TYPE_ICORE;
276 iip->ili_format.ilf_fields |= XFS_ILOG_CORE;
279 * If this is really an old format inode, then we need to
280 * log it as such. This means that we have to copy the link
281 * count from the new field to the old. We don't have to worry
282 * about the new fields, because nothing trusts them as long as
283 * the old inode version number is there. If the superblock already
284 * has a new version number, then we don't bother converting back.
287 ASSERT(ip->i_d.di_version == 1 || xfs_sb_version_hasnlink(&mp->m_sb));
288 if (ip->i_d.di_version == 1) {
289 if (!xfs_sb_version_hasnlink(&mp->m_sb)) {
293 ASSERT(ip->i_d.di_nlink <= XFS_MAXLINK_1);
294 ip->i_d.di_onlink = ip->i_d.di_nlink;
297 * The superblock version has already been bumped,
298 * so just make the conversion to the new inode
301 ip->i_d.di_version = 2;
302 ip->i_d.di_onlink = 0;
303 memset(&(ip->i_d.di_pad[0]), 0, sizeof(ip->i_d.di_pad));
307 switch (ip->i_d.di_format) {
308 case XFS_DINODE_FMT_EXTENTS:
309 ASSERT(!(iip->ili_format.ilf_fields &
310 (XFS_ILOG_DDATA | XFS_ILOG_DBROOT |
311 XFS_ILOG_DEV | XFS_ILOG_UUID)));
312 if (iip->ili_format.ilf_fields & XFS_ILOG_DEXT) {
313 ASSERT(ip->i_df.if_bytes > 0);
314 ASSERT(ip->i_df.if_u1.if_extents != NULL);
315 ASSERT(ip->i_d.di_nextents > 0);
316 ASSERT(iip->ili_extents_buf == NULL);
317 nrecs = ip->i_df.if_bytes /
318 (uint)sizeof(xfs_bmbt_rec_t);
320 #ifdef XFS_NATIVE_HOST
321 if (nrecs == ip->i_d.di_nextents) {
323 * There are no delayed allocation
324 * extents, so just point to the
325 * real extents array.
327 vecp->i_addr = ip->i_df.if_u1.if_extents;
328 vecp->i_len = ip->i_df.if_bytes;
329 vecp->i_type = XLOG_REG_TYPE_IEXT;
334 * There are delayed allocation extents
335 * in the inode, or we need to convert
336 * the extents to on disk format.
337 * Use xfs_iextents_copy()
338 * to copy only the real extents into
339 * a separate buffer. We'll free the
340 * buffer in the unlock routine.
342 ext_buffer = kmem_alloc(ip->i_df.if_bytes,
344 iip->ili_extents_buf = ext_buffer;
345 vecp->i_addr = ext_buffer;
346 vecp->i_len = xfs_iextents_copy(ip, ext_buffer,
348 vecp->i_type = XLOG_REG_TYPE_IEXT;
350 ASSERT(vecp->i_len <= ip->i_df.if_bytes);
351 iip->ili_format.ilf_dsize = vecp->i_len;
357 case XFS_DINODE_FMT_BTREE:
358 ASSERT(!(iip->ili_format.ilf_fields &
359 (XFS_ILOG_DDATA | XFS_ILOG_DEXT |
360 XFS_ILOG_DEV | XFS_ILOG_UUID)));
361 if (iip->ili_format.ilf_fields & XFS_ILOG_DBROOT) {
362 ASSERT(ip->i_df.if_broot_bytes > 0);
363 ASSERT(ip->i_df.if_broot != NULL);
364 vecp->i_addr = ip->i_df.if_broot;
365 vecp->i_len = ip->i_df.if_broot_bytes;
366 vecp->i_type = XLOG_REG_TYPE_IBROOT;
369 iip->ili_format.ilf_dsize = ip->i_df.if_broot_bytes;
373 case XFS_DINODE_FMT_LOCAL:
374 ASSERT(!(iip->ili_format.ilf_fields &
375 (XFS_ILOG_DBROOT | XFS_ILOG_DEXT |
376 XFS_ILOG_DEV | XFS_ILOG_UUID)));
377 if (iip->ili_format.ilf_fields & XFS_ILOG_DDATA) {
378 ASSERT(ip->i_df.if_bytes > 0);
379 ASSERT(ip->i_df.if_u1.if_data != NULL);
380 ASSERT(ip->i_d.di_size > 0);
382 vecp->i_addr = ip->i_df.if_u1.if_data;
384 * Round i_bytes up to a word boundary.
385 * The underlying memory is guaranteed to
386 * to be there by xfs_idata_realloc().
388 data_bytes = roundup(ip->i_df.if_bytes, 4);
389 ASSERT((ip->i_df.if_real_bytes == 0) ||
390 (ip->i_df.if_real_bytes == data_bytes));
391 vecp->i_len = (int)data_bytes;
392 vecp->i_type = XLOG_REG_TYPE_ILOCAL;
395 iip->ili_format.ilf_dsize = (unsigned)data_bytes;
399 case XFS_DINODE_FMT_DEV:
400 ASSERT(!(iip->ili_format.ilf_fields &
401 (XFS_ILOG_DBROOT | XFS_ILOG_DEXT |
402 XFS_ILOG_DDATA | XFS_ILOG_UUID)));
403 if (iip->ili_format.ilf_fields & XFS_ILOG_DEV) {
404 iip->ili_format.ilf_u.ilfu_rdev =
405 ip->i_df.if_u2.if_rdev;
409 case XFS_DINODE_FMT_UUID:
410 ASSERT(!(iip->ili_format.ilf_fields &
411 (XFS_ILOG_DBROOT | XFS_ILOG_DEXT |
412 XFS_ILOG_DDATA | XFS_ILOG_DEV)));
413 if (iip->ili_format.ilf_fields & XFS_ILOG_UUID) {
414 iip->ili_format.ilf_u.ilfu_uuid =
415 ip->i_df.if_u2.if_uuid;
425 * If there are no attributes associated with the file,
427 * Assert that no attribute-related log flags are set.
429 if (!XFS_IFORK_Q(ip)) {
430 ASSERT(nvecs == lip->li_desc->lid_size);
431 iip->ili_format.ilf_size = nvecs;
432 ASSERT(!(iip->ili_format.ilf_fields &
433 (XFS_ILOG_ADATA | XFS_ILOG_ABROOT | XFS_ILOG_AEXT)));
437 switch (ip->i_d.di_aformat) {
438 case XFS_DINODE_FMT_EXTENTS:
439 ASSERT(!(iip->ili_format.ilf_fields &
440 (XFS_ILOG_ADATA | XFS_ILOG_ABROOT)));
441 if (iip->ili_format.ilf_fields & XFS_ILOG_AEXT) {
442 ASSERT(ip->i_afp->if_bytes > 0);
443 ASSERT(ip->i_afp->if_u1.if_extents != NULL);
444 ASSERT(ip->i_d.di_anextents > 0);
446 nrecs = ip->i_afp->if_bytes /
447 (uint)sizeof(xfs_bmbt_rec_t);
450 ASSERT(nrecs == ip->i_d.di_anextents);
451 #ifdef XFS_NATIVE_HOST
453 * There are not delayed allocation extents
454 * for attributes, so just point at the array.
456 vecp->i_addr = ip->i_afp->if_u1.if_extents;
457 vecp->i_len = ip->i_afp->if_bytes;
459 ASSERT(iip->ili_aextents_buf == NULL);
461 * Need to endian flip before logging
463 ext_buffer = kmem_alloc(ip->i_afp->if_bytes,
465 iip->ili_aextents_buf = ext_buffer;
466 vecp->i_addr = ext_buffer;
467 vecp->i_len = xfs_iextents_copy(ip, ext_buffer,
470 vecp->i_type = XLOG_REG_TYPE_IATTR_EXT;
471 iip->ili_format.ilf_asize = vecp->i_len;
477 case XFS_DINODE_FMT_BTREE:
478 ASSERT(!(iip->ili_format.ilf_fields &
479 (XFS_ILOG_ADATA | XFS_ILOG_AEXT)));
480 if (iip->ili_format.ilf_fields & XFS_ILOG_ABROOT) {
481 ASSERT(ip->i_afp->if_broot_bytes > 0);
482 ASSERT(ip->i_afp->if_broot != NULL);
483 vecp->i_addr = ip->i_afp->if_broot;
484 vecp->i_len = ip->i_afp->if_broot_bytes;
485 vecp->i_type = XLOG_REG_TYPE_IATTR_BROOT;
488 iip->ili_format.ilf_asize = ip->i_afp->if_broot_bytes;
492 case XFS_DINODE_FMT_LOCAL:
493 ASSERT(!(iip->ili_format.ilf_fields &
494 (XFS_ILOG_ABROOT | XFS_ILOG_AEXT)));
495 if (iip->ili_format.ilf_fields & XFS_ILOG_ADATA) {
496 ASSERT(ip->i_afp->if_bytes > 0);
497 ASSERT(ip->i_afp->if_u1.if_data != NULL);
499 vecp->i_addr = ip->i_afp->if_u1.if_data;
501 * Round i_bytes up to a word boundary.
502 * The underlying memory is guaranteed to
503 * to be there by xfs_idata_realloc().
505 data_bytes = roundup(ip->i_afp->if_bytes, 4);
506 ASSERT((ip->i_afp->if_real_bytes == 0) ||
507 (ip->i_afp->if_real_bytes == data_bytes));
508 vecp->i_len = (int)data_bytes;
509 vecp->i_type = XLOG_REG_TYPE_IATTR_LOCAL;
512 iip->ili_format.ilf_asize = (unsigned)data_bytes;
521 ASSERT(nvecs == lip->li_desc->lid_size);
522 iip->ili_format.ilf_size = nvecs;
527 * This is called to pin the inode associated with the inode log
528 * item in memory so it cannot be written out.
532 struct xfs_log_item *lip)
534 struct xfs_inode *ip = INODE_ITEM(lip)->ili_inode;
536 ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
538 trace_xfs_inode_pin(ip, _RET_IP_);
539 atomic_inc(&ip->i_pincount);
544 * This is called to unpin the inode associated with the inode log
545 * item which was previously pinned with a call to xfs_inode_item_pin().
547 * Also wake up anyone in xfs_iunpin_wait() if the count goes to 0.
550 xfs_inode_item_unpin(
551 struct xfs_log_item *lip,
554 struct xfs_inode *ip = INODE_ITEM(lip)->ili_inode;
556 trace_xfs_inode_unpin(ip, _RET_IP_);
557 ASSERT(atomic_read(&ip->i_pincount) > 0);
558 if (atomic_dec_and_test(&ip->i_pincount))
559 wake_up(&ip->i_ipin_wait);
563 * This is called to attempt to lock the inode associated with this
564 * inode log item, in preparation for the push routine which does the actual
565 * iflush. Don't sleep on the inode lock or the flush lock.
567 * If the flush lock is already held, indicating that the inode has
568 * been or is in the process of being flushed, then (ideally) we'd like to
569 * see if the inode's buffer is still incore, and if so give it a nudge.
570 * We delay doing so until the pushbuf routine, though, to avoid holding
571 * the AIL lock across a call to the blackhole which is the buffer cache.
572 * Also we don't want to sleep in any device strategy routines, which can happen
573 * if we do the subsequent bawrite in here.
576 xfs_inode_item_trylock(
577 struct xfs_log_item *lip)
579 struct xfs_inode_log_item *iip = INODE_ITEM(lip);
580 struct xfs_inode *ip = iip->ili_inode;
582 if (xfs_ipincount(ip) > 0)
583 return XFS_ITEM_PINNED;
585 if (!xfs_ilock_nowait(ip, XFS_ILOCK_SHARED))
586 return XFS_ITEM_LOCKED;
588 if (!xfs_iflock_nowait(ip)) {
590 * inode has already been flushed to the backing buffer,
591 * leave it locked in shared mode, pushbuf routine will
594 return XFS_ITEM_PUSHBUF;
597 /* Stale items should force out the iclog */
598 if (ip->i_flags & XFS_ISTALE) {
601 * we hold the AIL lock - notify the unlock routine of this
602 * so it doesn't try to get the lock again.
604 xfs_iunlock(ip, XFS_ILOCK_SHARED|XFS_IUNLOCK_NONOTIFY);
605 return XFS_ITEM_PINNED;
609 if (!XFS_FORCED_SHUTDOWN(ip->i_mount)) {
610 ASSERT(iip->ili_format.ilf_fields != 0);
611 ASSERT(iip->ili_logged == 0);
612 ASSERT(lip->li_flags & XFS_LI_IN_AIL);
615 return XFS_ITEM_SUCCESS;
619 * Unlock the inode associated with the inode log item.
620 * Clear the fields of the inode and inode log item that
621 * are specific to the current transaction. If the
622 * hold flags is set, do not unlock the inode.
625 xfs_inode_item_unlock(
626 struct xfs_log_item *lip)
628 struct xfs_inode_log_item *iip = INODE_ITEM(lip);
629 struct xfs_inode *ip = iip->ili_inode;
630 unsigned short lock_flags;
632 ASSERT(iip->ili_inode->i_itemp != NULL);
633 ASSERT(xfs_isilocked(iip->ili_inode, XFS_ILOCK_EXCL));
636 * Clear the transaction pointer in the inode.
641 * If the inode needed a separate buffer with which to log
642 * its extents, then free it now.
644 if (iip->ili_extents_buf != NULL) {
645 ASSERT(ip->i_d.di_format == XFS_DINODE_FMT_EXTENTS);
646 ASSERT(ip->i_d.di_nextents > 0);
647 ASSERT(iip->ili_format.ilf_fields & XFS_ILOG_DEXT);
648 ASSERT(ip->i_df.if_bytes > 0);
649 kmem_free(iip->ili_extents_buf);
650 iip->ili_extents_buf = NULL;
652 if (iip->ili_aextents_buf != NULL) {
653 ASSERT(ip->i_d.di_aformat == XFS_DINODE_FMT_EXTENTS);
654 ASSERT(ip->i_d.di_anextents > 0);
655 ASSERT(iip->ili_format.ilf_fields & XFS_ILOG_AEXT);
656 ASSERT(ip->i_afp->if_bytes > 0);
657 kmem_free(iip->ili_aextents_buf);
658 iip->ili_aextents_buf = NULL;
661 lock_flags = iip->ili_lock_flags;
662 iip->ili_lock_flags = 0;
664 xfs_iput(iip->ili_inode, lock_flags);
668 * This is called to find out where the oldest active copy of the
669 * inode log item in the on disk log resides now that the last log
670 * write of it completed at the given lsn. Since we always re-log
671 * all dirty data in an inode, the latest copy in the on disk log
672 * is the only one that matters. Therefore, simply return the
676 xfs_inode_item_committed(
677 struct xfs_log_item *lip,
684 * This gets called by xfs_trans_push_ail(), when IOP_TRYLOCK
685 * failed to get the inode flush lock but did get the inode locked SHARED.
686 * Here we're trying to see if the inode buffer is incore, and if so whether it's
687 * marked delayed write. If that's the case, we'll promote it and that will
688 * allow the caller to write the buffer by triggering the xfsbufd to run.
691 xfs_inode_item_pushbuf(
692 struct xfs_log_item *lip)
694 struct xfs_inode_log_item *iip = INODE_ITEM(lip);
695 struct xfs_inode *ip = iip->ili_inode;
698 ASSERT(xfs_isilocked(ip, XFS_ILOCK_SHARED));
701 * If a flush is not in progress anymore, chances are that the
702 * inode was taken off the AIL. So, just get out.
704 if (completion_done(&ip->i_flush) ||
705 !(lip->li_flags & XFS_LI_IN_AIL)) {
706 xfs_iunlock(ip, XFS_ILOCK_SHARED);
710 bp = xfs_incore(ip->i_mount->m_ddev_targp, iip->ili_format.ilf_blkno,
711 iip->ili_format.ilf_len, XBF_TRYLOCK);
713 xfs_iunlock(ip, XFS_ILOCK_SHARED);
716 if (XFS_BUF_ISDELAYWRITE(bp))
717 xfs_buf_delwri_promote(bp);
722 * This is called to asynchronously write the inode associated with this
723 * inode log item out to disk. The inode will already have been locked by
724 * a successful call to xfs_inode_item_trylock().
728 struct xfs_log_item *lip)
730 struct xfs_inode_log_item *iip = INODE_ITEM(lip);
731 struct xfs_inode *ip = iip->ili_inode;
733 ASSERT(xfs_isilocked(ip, XFS_ILOCK_SHARED));
734 ASSERT(!completion_done(&ip->i_flush));
737 * Since we were able to lock the inode's flush lock and
738 * we found it on the AIL, the inode must be dirty. This
739 * is because the inode is removed from the AIL while still
740 * holding the flush lock in xfs_iflush_done(). Thus, if
741 * we found it in the AIL and were able to obtain the flush
742 * lock without sleeping, then there must not have been
743 * anyone in the process of flushing the inode.
745 ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) ||
746 iip->ili_format.ilf_fields != 0);
749 * Push the inode to it's backing buffer. This will not remove the
750 * inode from the AIL - a further push will be required to trigger a
751 * buffer push. However, this allows all the dirty inodes to be pushed
752 * to the buffer before it is pushed to disk. THe buffer IO completion
753 * will pull th einode from the AIL, mark it clean and unlock the flush
756 (void) xfs_iflush(ip, 0);
757 xfs_iunlock(ip, XFS_ILOCK_SHARED);
761 * XXX rcc - this one really has to do something. Probably needs
762 * to stamp in a new field in the incore inode.
765 xfs_inode_item_committing(
766 struct xfs_log_item *lip,
769 INODE_ITEM(lip)->ili_last_lsn = lsn;
773 * This is the ops vector shared by all buf log items.
775 static struct xfs_item_ops xfs_inode_item_ops = {
776 .iop_size = xfs_inode_item_size,
777 .iop_format = xfs_inode_item_format,
778 .iop_pin = xfs_inode_item_pin,
779 .iop_unpin = xfs_inode_item_unpin,
780 .iop_trylock = xfs_inode_item_trylock,
781 .iop_unlock = xfs_inode_item_unlock,
782 .iop_committed = xfs_inode_item_committed,
783 .iop_push = xfs_inode_item_push,
784 .iop_pushbuf = xfs_inode_item_pushbuf,
785 .iop_committing = xfs_inode_item_committing
790 * Initialize the inode log item for a newly allocated (in-core) inode.
794 struct xfs_inode *ip,
795 struct xfs_mount *mp)
797 struct xfs_inode_log_item *iip;
799 ASSERT(ip->i_itemp == NULL);
800 iip = ip->i_itemp = kmem_zone_zalloc(xfs_ili_zone, KM_SLEEP);
803 xfs_log_item_init(mp, &iip->ili_item, XFS_LI_INODE,
804 &xfs_inode_item_ops);
805 iip->ili_format.ilf_type = XFS_LI_INODE;
806 iip->ili_format.ilf_ino = ip->i_ino;
807 iip->ili_format.ilf_blkno = ip->i_imap.im_blkno;
808 iip->ili_format.ilf_len = ip->i_imap.im_len;
809 iip->ili_format.ilf_boffset = ip->i_imap.im_boffset;
813 * Free the inode log item and any memory hanging off of it.
816 xfs_inode_item_destroy(
819 #ifdef XFS_TRANS_DEBUG
820 if (ip->i_itemp->ili_root_size != 0) {
821 kmem_free(ip->i_itemp->ili_orig_root);
824 kmem_zone_free(xfs_ili_zone, ip->i_itemp);
829 * This is the inode flushing I/O completion routine. It is called
830 * from interrupt level when the buffer containing the inode is
831 * flushed to disk. It is responsible for removing the inode item
832 * from the AIL if it has not been re-logged, and unlocking the inode's
838 struct xfs_log_item *lip)
840 struct xfs_inode_log_item *iip = INODE_ITEM(lip);
841 xfs_inode_t *ip = iip->ili_inode;
842 struct xfs_ail *ailp = lip->li_ailp;
845 * We only want to pull the item from the AIL if it is
846 * actually there and its location in the log has not
847 * changed since we started the flush. Thus, we only bother
848 * if the ili_logged flag is set and the inode's lsn has not
849 * changed. First we check the lsn outside
850 * the lock since it's cheaper, and then we recheck while
851 * holding the lock before removing the inode from the AIL.
853 if (iip->ili_logged && lip->li_lsn == iip->ili_flush_lsn) {
854 spin_lock(&ailp->xa_lock);
855 if (lip->li_lsn == iip->ili_flush_lsn) {
856 /* xfs_trans_ail_delete() drops the AIL lock. */
857 xfs_trans_ail_delete(ailp, lip);
859 spin_unlock(&ailp->xa_lock);
866 * Clear the ili_last_fields bits now that we know that the
867 * data corresponding to them is safely on disk.
869 iip->ili_last_fields = 0;
872 * Release the inode's flush lock since we're done with it.
878 * This is the inode flushing abort routine. It is called
879 * from xfs_iflush when the filesystem is shutting down to clean
880 * up the inode state.
881 * It is responsible for removing the inode item
882 * from the AIL if it has not been re-logged, and unlocking the inode's
889 xfs_inode_log_item_t *iip = ip->i_itemp;
895 struct xfs_ail *ailp = iip->ili_item.li_ailp;
896 if (iip->ili_item.li_flags & XFS_LI_IN_AIL) {
897 spin_lock(&ailp->xa_lock);
898 if (iip->ili_item.li_flags & XFS_LI_IN_AIL) {
899 /* xfs_trans_ail_delete() drops the AIL lock. */
900 xfs_trans_ail_delete(ailp, (xfs_log_item_t *)iip);
902 spin_unlock(&ailp->xa_lock);
906 * Clear the ili_last_fields bits now that we know that the
907 * data corresponding to them is safely on disk.
909 iip->ili_last_fields = 0;
911 * Clear the inode logging fields so no more flushes are
914 iip->ili_format.ilf_fields = 0;
917 * Release the inode's flush lock since we're done with it.
925 struct xfs_log_item *lip)
927 xfs_iflush_abort(INODE_ITEM(lip)->ili_inode);
931 * convert an xfs_inode_log_format struct from either 32 or 64 bit versions
932 * (which can have different field alignments) to the native version
935 xfs_inode_item_format_convert(
936 xfs_log_iovec_t *buf,
937 xfs_inode_log_format_t *in_f)
939 if (buf->i_len == sizeof(xfs_inode_log_format_32_t)) {
940 xfs_inode_log_format_32_t *in_f32 = buf->i_addr;
942 in_f->ilf_type = in_f32->ilf_type;
943 in_f->ilf_size = in_f32->ilf_size;
944 in_f->ilf_fields = in_f32->ilf_fields;
945 in_f->ilf_asize = in_f32->ilf_asize;
946 in_f->ilf_dsize = in_f32->ilf_dsize;
947 in_f->ilf_ino = in_f32->ilf_ino;
948 /* copy biggest field of ilf_u */
949 memcpy(in_f->ilf_u.ilfu_uuid.__u_bits,
950 in_f32->ilf_u.ilfu_uuid.__u_bits,
952 in_f->ilf_blkno = in_f32->ilf_blkno;
953 in_f->ilf_len = in_f32->ilf_len;
954 in_f->ilf_boffset = in_f32->ilf_boffset;
956 } else if (buf->i_len == sizeof(xfs_inode_log_format_64_t)){
957 xfs_inode_log_format_64_t *in_f64 = buf->i_addr;
959 in_f->ilf_type = in_f64->ilf_type;
960 in_f->ilf_size = in_f64->ilf_size;
961 in_f->ilf_fields = in_f64->ilf_fields;
962 in_f->ilf_asize = in_f64->ilf_asize;
963 in_f->ilf_dsize = in_f64->ilf_dsize;
964 in_f->ilf_ino = in_f64->ilf_ino;
965 /* copy biggest field of ilf_u */
966 memcpy(in_f->ilf_u.ilfu_uuid.__u_bits,
967 in_f64->ilf_u.ilfu_uuid.__u_bits,
969 in_f->ilf_blkno = in_f64->ilf_blkno;
970 in_f->ilf_len = in_f64->ilf_len;
971 in_f->ilf_boffset = in_f64->ilf_boffset;