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_iunlock(iip
->ili_inode
, lock_flags
);
665 IRELE(iip
->ili_inode
);
670 * This is called to find out where the oldest active copy of the
671 * inode log item in the on disk log resides now that the last log
672 * write of it completed at the given lsn. Since we always re-log
673 * all dirty data in an inode, the latest copy in the on disk log
674 * is the only one that matters. Therefore, simply return the
678 xfs_inode_item_committed(
679 struct xfs_log_item
*lip
,
686 * This gets called by xfs_trans_push_ail(), when IOP_TRYLOCK
687 * failed to get the inode flush lock but did get the inode locked SHARED.
688 * Here we're trying to see if the inode buffer is incore, and if so whether it's
689 * marked delayed write. If that's the case, we'll promote it and that will
690 * allow the caller to write the buffer by triggering the xfsbufd to run.
693 xfs_inode_item_pushbuf(
694 struct xfs_log_item
*lip
)
696 struct xfs_inode_log_item
*iip
= INODE_ITEM(lip
);
697 struct xfs_inode
*ip
= iip
->ili_inode
;
700 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_SHARED
));
703 * If a flush is not in progress anymore, chances are that the
704 * inode was taken off the AIL. So, just get out.
706 if (completion_done(&ip
->i_flush
) ||
707 !(lip
->li_flags
& XFS_LI_IN_AIL
)) {
708 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
712 bp
= xfs_incore(ip
->i_mount
->m_ddev_targp
, iip
->ili_format
.ilf_blkno
,
713 iip
->ili_format
.ilf_len
, XBF_TRYLOCK
);
715 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
718 if (XFS_BUF_ISDELAYWRITE(bp
))
719 xfs_buf_delwri_promote(bp
);
724 * This is called to asynchronously write the inode associated with this
725 * inode log item out to disk. The inode will already have been locked by
726 * a successful call to xfs_inode_item_trylock().
730 struct xfs_log_item
*lip
)
732 struct xfs_inode_log_item
*iip
= INODE_ITEM(lip
);
733 struct xfs_inode
*ip
= iip
->ili_inode
;
735 ASSERT(xfs_isilocked(ip
, XFS_ILOCK_SHARED
));
736 ASSERT(!completion_done(&ip
->i_flush
));
739 * Since we were able to lock the inode's flush lock and
740 * we found it on the AIL, the inode must be dirty. This
741 * is because the inode is removed from the AIL while still
742 * holding the flush lock in xfs_iflush_done(). Thus, if
743 * we found it in the AIL and were able to obtain the flush
744 * lock without sleeping, then there must not have been
745 * anyone in the process of flushing the inode.
747 ASSERT(XFS_FORCED_SHUTDOWN(ip
->i_mount
) ||
748 iip
->ili_format
.ilf_fields
!= 0);
751 * Push the inode to it's backing buffer. This will not remove the
752 * inode from the AIL - a further push will be required to trigger a
753 * buffer push. However, this allows all the dirty inodes to be pushed
754 * to the buffer before it is pushed to disk. THe buffer IO completion
755 * will pull th einode from the AIL, mark it clean and unlock the flush
758 (void) xfs_iflush(ip
, 0);
759 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
763 * XXX rcc - this one really has to do something. Probably needs
764 * to stamp in a new field in the incore inode.
767 xfs_inode_item_committing(
768 struct xfs_log_item
*lip
,
771 INODE_ITEM(lip
)->ili_last_lsn
= lsn
;
775 * This is the ops vector shared by all buf log items.
777 static struct xfs_item_ops xfs_inode_item_ops
= {
778 .iop_size
= xfs_inode_item_size
,
779 .iop_format
= xfs_inode_item_format
,
780 .iop_pin
= xfs_inode_item_pin
,
781 .iop_unpin
= xfs_inode_item_unpin
,
782 .iop_trylock
= xfs_inode_item_trylock
,
783 .iop_unlock
= xfs_inode_item_unlock
,
784 .iop_committed
= xfs_inode_item_committed
,
785 .iop_push
= xfs_inode_item_push
,
786 .iop_pushbuf
= xfs_inode_item_pushbuf
,
787 .iop_committing
= xfs_inode_item_committing
792 * Initialize the inode log item for a newly allocated (in-core) inode.
796 struct xfs_inode
*ip
,
797 struct xfs_mount
*mp
)
799 struct xfs_inode_log_item
*iip
;
801 ASSERT(ip
->i_itemp
== NULL
);
802 iip
= ip
->i_itemp
= kmem_zone_zalloc(xfs_ili_zone
, KM_SLEEP
);
805 xfs_log_item_init(mp
, &iip
->ili_item
, XFS_LI_INODE
,
806 &xfs_inode_item_ops
);
807 iip
->ili_format
.ilf_type
= XFS_LI_INODE
;
808 iip
->ili_format
.ilf_ino
= ip
->i_ino
;
809 iip
->ili_format
.ilf_blkno
= ip
->i_imap
.im_blkno
;
810 iip
->ili_format
.ilf_len
= ip
->i_imap
.im_len
;
811 iip
->ili_format
.ilf_boffset
= ip
->i_imap
.im_boffset
;
815 * Free the inode log item and any memory hanging off of it.
818 xfs_inode_item_destroy(
821 #ifdef XFS_TRANS_DEBUG
822 if (ip
->i_itemp
->ili_root_size
!= 0) {
823 kmem_free(ip
->i_itemp
->ili_orig_root
);
826 kmem_zone_free(xfs_ili_zone
, ip
->i_itemp
);
831 * This is the inode flushing I/O completion routine. It is called
832 * from interrupt level when the buffer containing the inode is
833 * flushed to disk. It is responsible for removing the inode item
834 * from the AIL if it has not been re-logged, and unlocking the inode's
840 struct xfs_log_item
*lip
)
842 struct xfs_inode_log_item
*iip
= INODE_ITEM(lip
);
843 xfs_inode_t
*ip
= iip
->ili_inode
;
844 struct xfs_ail
*ailp
= lip
->li_ailp
;
847 * We only want to pull the item from the AIL if it is
848 * actually there and its location in the log has not
849 * changed since we started the flush. Thus, we only bother
850 * if the ili_logged flag is set and the inode's lsn has not
851 * changed. First we check the lsn outside
852 * the lock since it's cheaper, and then we recheck while
853 * holding the lock before removing the inode from the AIL.
855 if (iip
->ili_logged
&& lip
->li_lsn
== iip
->ili_flush_lsn
) {
856 spin_lock(&ailp
->xa_lock
);
857 if (lip
->li_lsn
== iip
->ili_flush_lsn
) {
858 /* xfs_trans_ail_delete() drops the AIL lock. */
859 xfs_trans_ail_delete(ailp
, lip
);
861 spin_unlock(&ailp
->xa_lock
);
868 * Clear the ili_last_fields bits now that we know that the
869 * data corresponding to them is safely on disk.
871 iip
->ili_last_fields
= 0;
874 * Release the inode's flush lock since we're done with it.
880 * This is the inode flushing abort routine. It is called
881 * from xfs_iflush when the filesystem is shutting down to clean
882 * up the inode state.
883 * It is responsible for removing the inode item
884 * from the AIL if it has not been re-logged, and unlocking the inode's
891 xfs_inode_log_item_t
*iip
= ip
->i_itemp
;
897 struct xfs_ail
*ailp
= iip
->ili_item
.li_ailp
;
898 if (iip
->ili_item
.li_flags
& XFS_LI_IN_AIL
) {
899 spin_lock(&ailp
->xa_lock
);
900 if (iip
->ili_item
.li_flags
& XFS_LI_IN_AIL
) {
901 /* xfs_trans_ail_delete() drops the AIL lock. */
902 xfs_trans_ail_delete(ailp
, (xfs_log_item_t
*)iip
);
904 spin_unlock(&ailp
->xa_lock
);
908 * Clear the ili_last_fields bits now that we know that the
909 * data corresponding to them is safely on disk.
911 iip
->ili_last_fields
= 0;
913 * Clear the inode logging fields so no more flushes are
916 iip
->ili_format
.ilf_fields
= 0;
919 * Release the inode's flush lock since we're done with it.
927 struct xfs_log_item
*lip
)
929 xfs_iflush_abort(INODE_ITEM(lip
)->ili_inode
);
933 * convert an xfs_inode_log_format struct from either 32 or 64 bit versions
934 * (which can have different field alignments) to the native version
937 xfs_inode_item_format_convert(
938 xfs_log_iovec_t
*buf
,
939 xfs_inode_log_format_t
*in_f
)
941 if (buf
->i_len
== sizeof(xfs_inode_log_format_32_t
)) {
942 xfs_inode_log_format_32_t
*in_f32
= buf
->i_addr
;
944 in_f
->ilf_type
= in_f32
->ilf_type
;
945 in_f
->ilf_size
= in_f32
->ilf_size
;
946 in_f
->ilf_fields
= in_f32
->ilf_fields
;
947 in_f
->ilf_asize
= in_f32
->ilf_asize
;
948 in_f
->ilf_dsize
= in_f32
->ilf_dsize
;
949 in_f
->ilf_ino
= in_f32
->ilf_ino
;
950 /* copy biggest field of ilf_u */
951 memcpy(in_f
->ilf_u
.ilfu_uuid
.__u_bits
,
952 in_f32
->ilf_u
.ilfu_uuid
.__u_bits
,
954 in_f
->ilf_blkno
= in_f32
->ilf_blkno
;
955 in_f
->ilf_len
= in_f32
->ilf_len
;
956 in_f
->ilf_boffset
= in_f32
->ilf_boffset
;
958 } else if (buf
->i_len
== sizeof(xfs_inode_log_format_64_t
)){
959 xfs_inode_log_format_64_t
*in_f64
= buf
->i_addr
;
961 in_f
->ilf_type
= in_f64
->ilf_type
;
962 in_f
->ilf_size
= in_f64
->ilf_size
;
963 in_f
->ilf_fields
= in_f64
->ilf_fields
;
964 in_f
->ilf_asize
= in_f64
->ilf_asize
;
965 in_f
->ilf_dsize
= in_f64
->ilf_dsize
;
966 in_f
->ilf_ino
= in_f64
->ilf_ino
;
967 /* copy biggest field of ilf_u */
968 memcpy(in_f
->ilf_u
.ilfu_uuid
.__u_bits
,
969 in_f64
->ilf_u
.ilfu_uuid
.__u_bits
,
971 in_f
->ilf_blkno
= in_f64
->ilf_blkno
;
972 in_f
->ilf_len
= in_f64
->ilf_len
;
973 in_f
->ilf_boffset
= in_f64
->ilf_boffset
;