2 * Copyright (c) 2000-2002 Silicon Graphics, Inc. All Rights Reserved.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of version 2 of the GNU General Public License as
6 * published by the Free Software Foundation.
8 * This program is distributed in the hope that it would be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12 * Further, this software is distributed without any warranty that it is
13 * free of the rightful claim of any third person regarding infringement
14 * or the like. Any license provided herein, whether implied or
15 * otherwise, applies only to this software file. Patent licenses, if
16 * any, provided herein do not apply to combinations of this program with
17 * other software, or any other product whatsoever.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write the Free Software Foundation, Inc., 59
21 * Temple Place - Suite 330, Boston MA 02111-1307, USA.
23 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
24 * Mountain View, CA 94043, or:
28 * For further information regarding this notice, see:
30 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
34 #include "xfs_types.h"
38 #include "xfs_trans.h"
39 #include "xfs_buf_item.h"
44 #include "xfs_dmapi.h"
45 #include "xfs_mount.h"
46 #include "xfs_trans_priv.h"
47 #include "xfs_bmap_btree.h"
48 #include "xfs_alloc_btree.h"
49 #include "xfs_ialloc_btree.h"
50 #include "xfs_dir_sf.h"
51 #include "xfs_dir2_sf.h"
52 #include "xfs_attr_sf.h"
53 #include "xfs_dinode.h"
54 #include "xfs_inode.h"
55 #include "xfs_inode_item.h"
56 #include "xfs_btree.h"
57 #include "xfs_ialloc.h"
61 kmem_zone_t
*xfs_ili_zone
; /* inode log item zone */
64 * This returns the number of iovecs needed to log the given inode item.
66 * We need one iovec for the inode log format structure, one for the
67 * inode core, and possibly one for the inode data/extents/b-tree root
68 * and one for the inode attribute data/extents/b-tree root.
72 xfs_inode_log_item_t
*iip
)
81 * Only log the data/extents/b-tree root if there is something
84 iip
->ili_format
.ilf_fields
|= XFS_ILOG_CORE
;
86 switch (ip
->i_d
.di_format
) {
87 case XFS_DINODE_FMT_EXTENTS
:
88 iip
->ili_format
.ilf_fields
&=
89 ~(XFS_ILOG_DDATA
| XFS_ILOG_DBROOT
|
90 XFS_ILOG_DEV
| XFS_ILOG_UUID
);
91 if ((iip
->ili_format
.ilf_fields
& XFS_ILOG_DEXT
) &&
92 (ip
->i_d
.di_nextents
> 0) &&
93 (ip
->i_df
.if_bytes
> 0)) {
94 ASSERT(ip
->i_df
.if_u1
.if_extents
!= NULL
);
97 iip
->ili_format
.ilf_fields
&= ~XFS_ILOG_DEXT
;
101 case XFS_DINODE_FMT_BTREE
:
102 ASSERT(ip
->i_df
.if_ext_max
==
103 XFS_IFORK_DSIZE(ip
) / (uint
)sizeof(xfs_bmbt_rec_t
));
104 iip
->ili_format
.ilf_fields
&=
105 ~(XFS_ILOG_DDATA
| XFS_ILOG_DEXT
|
106 XFS_ILOG_DEV
| XFS_ILOG_UUID
);
107 if ((iip
->ili_format
.ilf_fields
& XFS_ILOG_DBROOT
) &&
108 (ip
->i_df
.if_broot_bytes
> 0)) {
109 ASSERT(ip
->i_df
.if_broot
!= NULL
);
112 ASSERT(!(iip
->ili_format
.ilf_fields
&
114 #ifdef XFS_TRANS_DEBUG
115 if (iip
->ili_root_size
> 0) {
116 ASSERT(iip
->ili_root_size
==
117 ip
->i_df
.if_broot_bytes
);
118 ASSERT(memcmp(iip
->ili_orig_root
,
120 iip
->ili_root_size
) == 0);
122 ASSERT(ip
->i_df
.if_broot_bytes
== 0);
125 iip
->ili_format
.ilf_fields
&= ~XFS_ILOG_DBROOT
;
129 case XFS_DINODE_FMT_LOCAL
:
130 iip
->ili_format
.ilf_fields
&=
131 ~(XFS_ILOG_DEXT
| XFS_ILOG_DBROOT
|
132 XFS_ILOG_DEV
| XFS_ILOG_UUID
);
133 if ((iip
->ili_format
.ilf_fields
& XFS_ILOG_DDATA
) &&
134 (ip
->i_df
.if_bytes
> 0)) {
135 ASSERT(ip
->i_df
.if_u1
.if_data
!= NULL
);
136 ASSERT(ip
->i_d
.di_size
> 0);
139 iip
->ili_format
.ilf_fields
&= ~XFS_ILOG_DDATA
;
143 case XFS_DINODE_FMT_DEV
:
144 iip
->ili_format
.ilf_fields
&=
145 ~(XFS_ILOG_DDATA
| XFS_ILOG_DBROOT
|
146 XFS_ILOG_DEXT
| XFS_ILOG_UUID
);
149 case XFS_DINODE_FMT_UUID
:
150 iip
->ili_format
.ilf_fields
&=
151 ~(XFS_ILOG_DDATA
| XFS_ILOG_DBROOT
|
152 XFS_ILOG_DEXT
| XFS_ILOG_DEV
);
161 * If there are no attributes associated with this file,
162 * then there cannot be anything more to log.
163 * Clear all attribute-related log flags.
165 if (!XFS_IFORK_Q(ip
)) {
166 iip
->ili_format
.ilf_fields
&=
167 ~(XFS_ILOG_ADATA
| XFS_ILOG_ABROOT
| XFS_ILOG_AEXT
);
172 * Log any necessary attribute data.
174 switch (ip
->i_d
.di_aformat
) {
175 case XFS_DINODE_FMT_EXTENTS
:
176 iip
->ili_format
.ilf_fields
&=
177 ~(XFS_ILOG_ADATA
| XFS_ILOG_ABROOT
);
178 if ((iip
->ili_format
.ilf_fields
& XFS_ILOG_AEXT
) &&
179 (ip
->i_d
.di_anextents
> 0) &&
180 (ip
->i_afp
->if_bytes
> 0)) {
181 ASSERT(ip
->i_afp
->if_u1
.if_extents
!= NULL
);
184 iip
->ili_format
.ilf_fields
&= ~XFS_ILOG_AEXT
;
188 case XFS_DINODE_FMT_BTREE
:
189 iip
->ili_format
.ilf_fields
&=
190 ~(XFS_ILOG_ADATA
| XFS_ILOG_AEXT
);
191 if ((iip
->ili_format
.ilf_fields
& XFS_ILOG_ABROOT
) &&
192 (ip
->i_afp
->if_broot_bytes
> 0)) {
193 ASSERT(ip
->i_afp
->if_broot
!= NULL
);
196 iip
->ili_format
.ilf_fields
&= ~XFS_ILOG_ABROOT
;
200 case XFS_DINODE_FMT_LOCAL
:
201 iip
->ili_format
.ilf_fields
&=
202 ~(XFS_ILOG_AEXT
| XFS_ILOG_ABROOT
);
203 if ((iip
->ili_format
.ilf_fields
& XFS_ILOG_ADATA
) &&
204 (ip
->i_afp
->if_bytes
> 0)) {
205 ASSERT(ip
->i_afp
->if_u1
.if_data
!= NULL
);
208 iip
->ili_format
.ilf_fields
&= ~XFS_ILOG_ADATA
;
221 * This is called to fill in the vector of log iovecs for the
222 * given inode log item. It fills the first item with an inode
223 * log format structure, the second with the on-disk inode structure,
224 * and a possible third and/or fourth with the inode data/extents/b-tree
225 * root and inode attributes data/extents/b-tree root.
228 xfs_inode_item_format(
229 xfs_inode_log_item_t
*iip
,
230 xfs_log_iovec_t
*log_vector
)
233 xfs_log_iovec_t
*vecp
;
236 xfs_bmbt_rec_t
*ext_buffer
;
243 vecp
->i_addr
= (xfs_caddr_t
)&iip
->ili_format
;
244 vecp
->i_len
= sizeof(xfs_inode_log_format_t
);
245 XLOG_VEC_SET_TYPE(vecp
, XLOG_REG_TYPE_IFORMAT
);
250 * Clear i_update_core if the timestamps (or any other
251 * non-transactional modification) need flushing/logging
252 * and we're about to log them with the rest of the core.
254 * This is the same logic as xfs_iflush() but this code can't
255 * run at the same time as xfs_iflush because we're in commit
256 * processing here and so we have the inode lock held in
257 * exclusive mode. Although it doesn't really matter
258 * for the timestamps if both routines were to grab the
259 * timestamps or not. That would be ok.
261 * We clear i_update_core before copying out the data.
262 * This is for coordination with our timestamp updates
263 * that don't hold the inode lock. They will always
264 * update the timestamps BEFORE setting i_update_core,
265 * so if we clear i_update_core after they set it we
266 * are guaranteed to see their updates to the timestamps
267 * either here. Likewise, if they set it after we clear it
268 * here, we'll see it either on the next commit of this
269 * inode or the next time the inode gets flushed via
270 * xfs_iflush(). This depends on strongly ordered memory
271 * semantics, but we have that. We use the SYNCHRONIZE
272 * macro to make sure that the compiler does not reorder
273 * the i_update_core access below the data copy below.
275 if (ip
->i_update_core
) {
276 ip
->i_update_core
= 0;
281 * We don't have to worry about re-ordering here because
282 * the update_size field is protected by the inode lock
283 * and we have that held in exclusive mode.
285 if (ip
->i_update_size
)
286 ip
->i_update_size
= 0;
288 vecp
->i_addr
= (xfs_caddr_t
)&ip
->i_d
;
289 vecp
->i_len
= sizeof(xfs_dinode_core_t
);
290 XLOG_VEC_SET_TYPE(vecp
, XLOG_REG_TYPE_ICORE
);
293 iip
->ili_format
.ilf_fields
|= XFS_ILOG_CORE
;
296 * If this is really an old format inode, then we need to
297 * log it as such. This means that we have to copy the link
298 * count from the new field to the old. We don't have to worry
299 * about the new fields, because nothing trusts them as long as
300 * the old inode version number is there. If the superblock already
301 * has a new version number, then we don't bother converting back.
304 ASSERT(ip
->i_d
.di_version
== XFS_DINODE_VERSION_1
||
305 XFS_SB_VERSION_HASNLINK(&mp
->m_sb
));
306 if (ip
->i_d
.di_version
== XFS_DINODE_VERSION_1
) {
307 if (!XFS_SB_VERSION_HASNLINK(&mp
->m_sb
)) {
311 ASSERT(ip
->i_d
.di_nlink
<= XFS_MAXLINK_1
);
312 ip
->i_d
.di_onlink
= ip
->i_d
.di_nlink
;
315 * The superblock version has already been bumped,
316 * so just make the conversion to the new inode
319 ip
->i_d
.di_version
= XFS_DINODE_VERSION_2
;
320 ip
->i_d
.di_onlink
= 0;
321 memset(&(ip
->i_d
.di_pad
[0]), 0, sizeof(ip
->i_d
.di_pad
));
325 switch (ip
->i_d
.di_format
) {
326 case XFS_DINODE_FMT_EXTENTS
:
327 ASSERT(!(iip
->ili_format
.ilf_fields
&
328 (XFS_ILOG_DDATA
| XFS_ILOG_DBROOT
|
329 XFS_ILOG_DEV
| XFS_ILOG_UUID
)));
330 if (iip
->ili_format
.ilf_fields
& XFS_ILOG_DEXT
) {
331 ASSERT(ip
->i_df
.if_bytes
> 0);
332 ASSERT(ip
->i_df
.if_u1
.if_extents
!= NULL
);
333 ASSERT(ip
->i_d
.di_nextents
> 0);
334 ASSERT(iip
->ili_extents_buf
== NULL
);
335 nrecs
= ip
->i_df
.if_bytes
/
336 (uint
)sizeof(xfs_bmbt_rec_t
);
338 #ifdef XFS_NATIVE_HOST
339 if (nrecs
== ip
->i_d
.di_nextents
) {
341 * There are no delayed allocation
342 * extents, so just point to the
343 * real extents array.
346 (char *)(ip
->i_df
.if_u1
.if_extents
);
347 vecp
->i_len
= ip
->i_df
.if_bytes
;
348 XLOG_VEC_SET_TYPE(vecp
, XLOG_REG_TYPE_IEXT
);
353 * There are delayed allocation extents
354 * in the inode, or we need to convert
355 * the extents to on disk format.
356 * Use xfs_iextents_copy()
357 * to copy only the real extents into
358 * a separate buffer. We'll free the
359 * buffer in the unlock routine.
361 ext_buffer
= kmem_alloc(ip
->i_df
.if_bytes
,
363 iip
->ili_extents_buf
= ext_buffer
;
364 vecp
->i_addr
= (xfs_caddr_t
)ext_buffer
;
365 vecp
->i_len
= xfs_iextents_copy(ip
, ext_buffer
,
367 XLOG_VEC_SET_TYPE(vecp
, XLOG_REG_TYPE_IEXT
);
369 ASSERT(vecp
->i_len
<= ip
->i_df
.if_bytes
);
370 iip
->ili_format
.ilf_dsize
= vecp
->i_len
;
376 case XFS_DINODE_FMT_BTREE
:
377 ASSERT(!(iip
->ili_format
.ilf_fields
&
378 (XFS_ILOG_DDATA
| XFS_ILOG_DEXT
|
379 XFS_ILOG_DEV
| XFS_ILOG_UUID
)));
380 if (iip
->ili_format
.ilf_fields
& XFS_ILOG_DBROOT
) {
381 ASSERT(ip
->i_df
.if_broot_bytes
> 0);
382 ASSERT(ip
->i_df
.if_broot
!= NULL
);
383 vecp
->i_addr
= (xfs_caddr_t
)ip
->i_df
.if_broot
;
384 vecp
->i_len
= ip
->i_df
.if_broot_bytes
;
385 XLOG_VEC_SET_TYPE(vecp
, XLOG_REG_TYPE_IBROOT
);
388 iip
->ili_format
.ilf_dsize
= ip
->i_df
.if_broot_bytes
;
392 case XFS_DINODE_FMT_LOCAL
:
393 ASSERT(!(iip
->ili_format
.ilf_fields
&
394 (XFS_ILOG_DBROOT
| XFS_ILOG_DEXT
|
395 XFS_ILOG_DEV
| XFS_ILOG_UUID
)));
396 if (iip
->ili_format
.ilf_fields
& XFS_ILOG_DDATA
) {
397 ASSERT(ip
->i_df
.if_bytes
> 0);
398 ASSERT(ip
->i_df
.if_u1
.if_data
!= NULL
);
399 ASSERT(ip
->i_d
.di_size
> 0);
401 vecp
->i_addr
= (xfs_caddr_t
)ip
->i_df
.if_u1
.if_data
;
403 * Round i_bytes up to a word boundary.
404 * The underlying memory is guaranteed to
405 * to be there by xfs_idata_realloc().
407 data_bytes
= roundup(ip
->i_df
.if_bytes
, 4);
408 ASSERT((ip
->i_df
.if_real_bytes
== 0) ||
409 (ip
->i_df
.if_real_bytes
== data_bytes
));
410 vecp
->i_len
= (int)data_bytes
;
411 XLOG_VEC_SET_TYPE(vecp
, XLOG_REG_TYPE_ILOCAL
);
414 iip
->ili_format
.ilf_dsize
= (unsigned)data_bytes
;
418 case XFS_DINODE_FMT_DEV
:
419 ASSERT(!(iip
->ili_format
.ilf_fields
&
420 (XFS_ILOG_DBROOT
| XFS_ILOG_DEXT
|
421 XFS_ILOG_DDATA
| XFS_ILOG_UUID
)));
422 if (iip
->ili_format
.ilf_fields
& XFS_ILOG_DEV
) {
423 iip
->ili_format
.ilf_u
.ilfu_rdev
=
424 ip
->i_df
.if_u2
.if_rdev
;
428 case XFS_DINODE_FMT_UUID
:
429 ASSERT(!(iip
->ili_format
.ilf_fields
&
430 (XFS_ILOG_DBROOT
| XFS_ILOG_DEXT
|
431 XFS_ILOG_DDATA
| XFS_ILOG_DEV
)));
432 if (iip
->ili_format
.ilf_fields
& XFS_ILOG_UUID
) {
433 iip
->ili_format
.ilf_u
.ilfu_uuid
=
434 ip
->i_df
.if_u2
.if_uuid
;
444 * If there are no attributes associated with the file,
446 * Assert that no attribute-related log flags are set.
448 if (!XFS_IFORK_Q(ip
)) {
449 ASSERT(nvecs
== iip
->ili_item
.li_desc
->lid_size
);
450 iip
->ili_format
.ilf_size
= nvecs
;
451 ASSERT(!(iip
->ili_format
.ilf_fields
&
452 (XFS_ILOG_ADATA
| XFS_ILOG_ABROOT
| XFS_ILOG_AEXT
)));
456 switch (ip
->i_d
.di_aformat
) {
457 case XFS_DINODE_FMT_EXTENTS
:
458 ASSERT(!(iip
->ili_format
.ilf_fields
&
459 (XFS_ILOG_ADATA
| XFS_ILOG_ABROOT
)));
460 if (iip
->ili_format
.ilf_fields
& XFS_ILOG_AEXT
) {
461 ASSERT(ip
->i_afp
->if_bytes
> 0);
462 ASSERT(ip
->i_afp
->if_u1
.if_extents
!= NULL
);
463 ASSERT(ip
->i_d
.di_anextents
> 0);
465 nrecs
= ip
->i_afp
->if_bytes
/
466 (uint
)sizeof(xfs_bmbt_rec_t
);
469 ASSERT(nrecs
== ip
->i_d
.di_anextents
);
470 #ifdef XFS_NATIVE_HOST
472 * There are not delayed allocation extents
473 * for attributes, so just point at the array.
475 vecp
->i_addr
= (char *)(ip
->i_afp
->if_u1
.if_extents
);
476 vecp
->i_len
= ip
->i_afp
->if_bytes
;
478 ASSERT(iip
->ili_aextents_buf
== NULL
);
480 * Need to endian flip before logging
482 ext_buffer
= kmem_alloc(ip
->i_afp
->if_bytes
,
484 iip
->ili_aextents_buf
= ext_buffer
;
485 vecp
->i_addr
= (xfs_caddr_t
)ext_buffer
;
486 vecp
->i_len
= xfs_iextents_copy(ip
, ext_buffer
,
489 XLOG_VEC_SET_TYPE(vecp
, XLOG_REG_TYPE_IATTR_EXT
);
490 iip
->ili_format
.ilf_asize
= vecp
->i_len
;
496 case XFS_DINODE_FMT_BTREE
:
497 ASSERT(!(iip
->ili_format
.ilf_fields
&
498 (XFS_ILOG_ADATA
| XFS_ILOG_AEXT
)));
499 if (iip
->ili_format
.ilf_fields
& XFS_ILOG_ABROOT
) {
500 ASSERT(ip
->i_afp
->if_broot_bytes
> 0);
501 ASSERT(ip
->i_afp
->if_broot
!= NULL
);
502 vecp
->i_addr
= (xfs_caddr_t
)ip
->i_afp
->if_broot
;
503 vecp
->i_len
= ip
->i_afp
->if_broot_bytes
;
504 XLOG_VEC_SET_TYPE(vecp
, XLOG_REG_TYPE_IATTR_BROOT
);
507 iip
->ili_format
.ilf_asize
= ip
->i_afp
->if_broot_bytes
;
511 case XFS_DINODE_FMT_LOCAL
:
512 ASSERT(!(iip
->ili_format
.ilf_fields
&
513 (XFS_ILOG_ABROOT
| XFS_ILOG_AEXT
)));
514 if (iip
->ili_format
.ilf_fields
& XFS_ILOG_ADATA
) {
515 ASSERT(ip
->i_afp
->if_bytes
> 0);
516 ASSERT(ip
->i_afp
->if_u1
.if_data
!= NULL
);
518 vecp
->i_addr
= (xfs_caddr_t
)ip
->i_afp
->if_u1
.if_data
;
520 * Round i_bytes up to a word boundary.
521 * The underlying memory is guaranteed to
522 * to be there by xfs_idata_realloc().
524 data_bytes
= roundup(ip
->i_afp
->if_bytes
, 4);
525 ASSERT((ip
->i_afp
->if_real_bytes
== 0) ||
526 (ip
->i_afp
->if_real_bytes
== data_bytes
));
527 vecp
->i_len
= (int)data_bytes
;
528 XLOG_VEC_SET_TYPE(vecp
, XLOG_REG_TYPE_IATTR_LOCAL
);
531 iip
->ili_format
.ilf_asize
= (unsigned)data_bytes
;
540 ASSERT(nvecs
== iip
->ili_item
.li_desc
->lid_size
);
541 iip
->ili_format
.ilf_size
= nvecs
;
546 * This is called to pin the inode associated with the inode log
547 * item in memory so it cannot be written out. Do this by calling
548 * xfs_ipin() to bump the pin count in the inode while holding the
553 xfs_inode_log_item_t
*iip
)
555 ASSERT(ismrlocked(&(iip
->ili_inode
->i_lock
), MR_UPDATE
));
556 xfs_ipin(iip
->ili_inode
);
561 * This is called to unpin the inode associated with the inode log
562 * item which was previously pinned with a call to xfs_inode_item_pin().
563 * Just call xfs_iunpin() on the inode to do this.
567 xfs_inode_item_unpin(
568 xfs_inode_log_item_t
*iip
,
571 xfs_iunpin(iip
->ili_inode
);
576 xfs_inode_item_unpin_remove(
577 xfs_inode_log_item_t
*iip
,
580 xfs_iunpin(iip
->ili_inode
);
584 * This is called to attempt to lock the inode associated with this
585 * inode log item, in preparation for the push routine which does the actual
586 * iflush. Don't sleep on the inode lock or the flush lock.
588 * If the flush lock is already held, indicating that the inode has
589 * been or is in the process of being flushed, then (ideally) we'd like to
590 * see if the inode's buffer is still incore, and if so give it a nudge.
591 * We delay doing so until the pushbuf routine, though, to avoid holding
592 * the AIL lock across a call to the blackhole which is the buffercache.
593 * Also we don't want to sleep in any device strategy routines, which can happen
594 * if we do the subsequent bawrite in here.
597 xfs_inode_item_trylock(
598 xfs_inode_log_item_t
*iip
)
600 register xfs_inode_t
*ip
;
604 if (xfs_ipincount(ip
) > 0) {
605 return XFS_ITEM_PINNED
;
608 if (!xfs_ilock_nowait(ip
, XFS_ILOCK_SHARED
)) {
609 return XFS_ITEM_LOCKED
;
612 if (!xfs_iflock_nowait(ip
)) {
614 * If someone else isn't already trying to push the inode
615 * buffer, we get to do it.
617 if (iip
->ili_pushbuf_flag
== 0) {
618 iip
->ili_pushbuf_flag
= 1;
620 iip
->ili_push_owner
= get_thread_id();
623 * Inode is left locked in shared mode.
624 * Pushbuf routine gets to unlock it.
626 return XFS_ITEM_PUSHBUF
;
629 * We hold the AIL_LOCK, so we must specify the
630 * NONOTIFY flag so that we won't double trip.
632 xfs_iunlock(ip
, XFS_ILOCK_SHARED
|XFS_IUNLOCK_NONOTIFY
);
633 return XFS_ITEM_FLUSHING
;
638 /* Stale items should force out the iclog */
639 if (ip
->i_flags
& XFS_ISTALE
) {
641 xfs_iunlock(ip
, XFS_ILOCK_SHARED
|XFS_IUNLOCK_NONOTIFY
);
642 return XFS_ITEM_PINNED
;
646 if (!XFS_FORCED_SHUTDOWN(ip
->i_mount
)) {
647 ASSERT(iip
->ili_format
.ilf_fields
!= 0);
648 ASSERT(iip
->ili_logged
== 0);
649 ASSERT(iip
->ili_item
.li_flags
& XFS_LI_IN_AIL
);
652 return XFS_ITEM_SUCCESS
;
656 * Unlock the inode associated with the inode log item.
657 * Clear the fields of the inode and inode log item that
658 * are specific to the current transaction. If the
659 * hold flags is set, do not unlock the inode.
662 xfs_inode_item_unlock(
663 xfs_inode_log_item_t
*iip
)
671 ASSERT(iip
->ili_inode
->i_itemp
!= NULL
);
672 ASSERT(ismrlocked(&(iip
->ili_inode
->i_lock
), MR_UPDATE
));
673 ASSERT((!(iip
->ili_inode
->i_itemp
->ili_flags
&
674 XFS_ILI_IOLOCKED_EXCL
)) ||
675 ismrlocked(&(iip
->ili_inode
->i_iolock
), MR_UPDATE
));
676 ASSERT((!(iip
->ili_inode
->i_itemp
->ili_flags
&
677 XFS_ILI_IOLOCKED_SHARED
)) ||
678 ismrlocked(&(iip
->ili_inode
->i_iolock
), MR_ACCESS
));
680 * Clear the transaction pointer in the inode.
686 * If the inode needed a separate buffer with which to log
687 * its extents, then free it now.
689 if (iip
->ili_extents_buf
!= NULL
) {
690 ASSERT(ip
->i_d
.di_format
== XFS_DINODE_FMT_EXTENTS
);
691 ASSERT(ip
->i_d
.di_nextents
> 0);
692 ASSERT(iip
->ili_format
.ilf_fields
& XFS_ILOG_DEXT
);
693 ASSERT(ip
->i_df
.if_bytes
> 0);
694 kmem_free(iip
->ili_extents_buf
, ip
->i_df
.if_bytes
);
695 iip
->ili_extents_buf
= NULL
;
697 if (iip
->ili_aextents_buf
!= NULL
) {
698 ASSERT(ip
->i_d
.di_aformat
== XFS_DINODE_FMT_EXTENTS
);
699 ASSERT(ip
->i_d
.di_anextents
> 0);
700 ASSERT(iip
->ili_format
.ilf_fields
& XFS_ILOG_AEXT
);
701 ASSERT(ip
->i_afp
->if_bytes
> 0);
702 kmem_free(iip
->ili_aextents_buf
, ip
->i_afp
->if_bytes
);
703 iip
->ili_aextents_buf
= NULL
;
707 * Figure out if we should unlock the inode or not.
709 hold
= iip
->ili_flags
& XFS_ILI_HOLD
;
712 * Before clearing out the flags, remember whether we
713 * are holding the inode's IO lock.
715 iolocked
= iip
->ili_flags
& XFS_ILI_IOLOCKED_ANY
;
718 * Clear out the fields of the inode log item particular
719 * to the current transaction.
721 iip
->ili_ilock_recur
= 0;
722 iip
->ili_iolock_recur
= 0;
726 * Unlock the inode if XFS_ILI_HOLD was not set.
729 lock_flags
= XFS_ILOCK_EXCL
;
730 if (iolocked
& XFS_ILI_IOLOCKED_EXCL
) {
731 lock_flags
|= XFS_IOLOCK_EXCL
;
732 } else if (iolocked
& XFS_ILI_IOLOCKED_SHARED
) {
733 lock_flags
|= XFS_IOLOCK_SHARED
;
735 xfs_iput(iip
->ili_inode
, lock_flags
);
740 * This is called to find out where the oldest active copy of the
741 * inode log item in the on disk log resides now that the last log
742 * write of it completed at the given lsn. Since we always re-log
743 * all dirty data in an inode, the latest copy in the on disk log
744 * is the only one that matters. Therefore, simply return the
749 xfs_inode_item_committed(
750 xfs_inode_log_item_t
*iip
,
757 * The transaction with the inode locked has aborted. The inode
758 * must not be dirty within the transaction (unless we're forcibly
759 * shutting down). We simply unlock just as if the transaction
760 * had been cancelled.
763 xfs_inode_item_abort(
764 xfs_inode_log_item_t
*iip
)
766 xfs_inode_item_unlock(iip
);
772 * This gets called by xfs_trans_push_ail(), when IOP_TRYLOCK
773 * failed to get the inode flush lock but did get the inode locked SHARED.
774 * Here we're trying to see if the inode buffer is incore, and if so whether it's
775 * marked delayed write. If that's the case, we'll initiate a bawrite on that
776 * buffer to expedite the process.
778 * We aren't holding the AIL_LOCK (or the flush lock) when this gets called,
779 * so it is inherently race-y.
782 xfs_inode_item_pushbuf(
783 xfs_inode_log_item_t
*iip
)
792 ASSERT(ismrlocked(&(ip
->i_lock
), MR_ACCESS
));
795 * The ili_pushbuf_flag keeps others from
796 * trying to duplicate our effort.
798 ASSERT(iip
->ili_pushbuf_flag
!= 0);
799 ASSERT(iip
->ili_push_owner
== get_thread_id());
802 * If flushlock isn't locked anymore, chances are that the
803 * inode flush completed and the inode was taken off the AIL.
806 if ((valusema(&(ip
->i_flock
)) > 0) ||
807 ((iip
->ili_item
.li_flags
& XFS_LI_IN_AIL
) == 0)) {
808 iip
->ili_pushbuf_flag
= 0;
809 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
814 bp
= xfs_incore(mp
->m_ddev_targp
, iip
->ili_format
.ilf_blkno
,
815 iip
->ili_format
.ilf_len
, XFS_INCORE_TRYLOCK
);
818 if (XFS_BUF_ISDELAYWRITE(bp
)) {
820 * We were racing with iflush because we don't hold
821 * the AIL_LOCK or the flush lock. However, at this point,
822 * we have the buffer, and we know that it's dirty.
823 * So, it's possible that iflush raced with us, and
824 * this item is already taken off the AIL.
825 * If not, we can flush it async.
827 dopush
= ((iip
->ili_item
.li_flags
& XFS_LI_IN_AIL
) &&
828 (valusema(&(ip
->i_flock
)) <= 0));
829 iip
->ili_pushbuf_flag
= 0;
830 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
831 xfs_buftrace("INODE ITEM PUSH", bp
);
832 if (XFS_BUF_ISPINNED(bp
)) {
833 xfs_log_force(mp
, (xfs_lsn_t
)0,
842 iip
->ili_pushbuf_flag
= 0;
843 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
849 * We have to be careful about resetting pushbuf flag too early (above).
850 * Even though in theory we can do it as soon as we have the buflock,
851 * we don't want others to be doing work needlessly. They'll come to
852 * this function thinking that pushing the buffer is their
853 * responsibility only to find that the buffer is still locked by
854 * another doing the same thing
856 iip
->ili_pushbuf_flag
= 0;
857 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
863 * This is called to asynchronously write the inode associated with this
864 * inode log item out to disk. The inode will already have been locked by
865 * a successful call to xfs_inode_item_trylock().
869 xfs_inode_log_item_t
*iip
)
875 ASSERT(ismrlocked(&(ip
->i_lock
), MR_ACCESS
));
876 ASSERT(valusema(&(ip
->i_flock
)) <= 0);
878 * Since we were able to lock the inode's flush lock and
879 * we found it on the AIL, the inode must be dirty. This
880 * is because the inode is removed from the AIL while still
881 * holding the flush lock in xfs_iflush_done(). Thus, if
882 * we found it in the AIL and were able to obtain the flush
883 * lock without sleeping, then there must not have been
884 * anyone in the process of flushing the inode.
886 ASSERT(XFS_FORCED_SHUTDOWN(ip
->i_mount
) ||
887 iip
->ili_format
.ilf_fields
!= 0);
890 * Write out the inode. The completion routine ('iflush_done') will
891 * pull it from the AIL, mark it clean, unlock the flush lock.
893 (void) xfs_iflush(ip
, XFS_IFLUSH_ASYNC
);
894 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
900 * XXX rcc - this one really has to do something. Probably needs
901 * to stamp in a new field in the incore inode.
905 xfs_inode_item_committing(
906 xfs_inode_log_item_t
*iip
,
909 iip
->ili_last_lsn
= lsn
;
914 * This is the ops vector shared by all buf log items.
916 STATIC
struct xfs_item_ops xfs_inode_item_ops
= {
917 .iop_size
= (uint(*)(xfs_log_item_t
*))xfs_inode_item_size
,
918 .iop_format
= (void(*)(xfs_log_item_t
*, xfs_log_iovec_t
*))
919 xfs_inode_item_format
,
920 .iop_pin
= (void(*)(xfs_log_item_t
*))xfs_inode_item_pin
,
921 .iop_unpin
= (void(*)(xfs_log_item_t
*, int))xfs_inode_item_unpin
,
922 .iop_unpin_remove
= (void(*)(xfs_log_item_t
*, xfs_trans_t
*))
923 xfs_inode_item_unpin_remove
,
924 .iop_trylock
= (uint(*)(xfs_log_item_t
*))xfs_inode_item_trylock
,
925 .iop_unlock
= (void(*)(xfs_log_item_t
*))xfs_inode_item_unlock
,
926 .iop_committed
= (xfs_lsn_t(*)(xfs_log_item_t
*, xfs_lsn_t
))
927 xfs_inode_item_committed
,
928 .iop_push
= (void(*)(xfs_log_item_t
*))xfs_inode_item_push
,
929 .iop_abort
= (void(*)(xfs_log_item_t
*))xfs_inode_item_abort
,
930 .iop_pushbuf
= (void(*)(xfs_log_item_t
*))xfs_inode_item_pushbuf
,
931 .iop_committing
= (void(*)(xfs_log_item_t
*, xfs_lsn_t
))
932 xfs_inode_item_committing
937 * Initialize the inode log item for a newly allocated (in-core) inode.
944 xfs_inode_log_item_t
*iip
;
946 ASSERT(ip
->i_itemp
== NULL
);
947 iip
= ip
->i_itemp
= kmem_zone_zalloc(xfs_ili_zone
, KM_SLEEP
);
949 iip
->ili_item
.li_type
= XFS_LI_INODE
;
950 iip
->ili_item
.li_ops
= &xfs_inode_item_ops
;
951 iip
->ili_item
.li_mountp
= mp
;
955 We have zeroed memory. No need ...
956 iip->ili_extents_buf = NULL;
957 iip->ili_pushbuf_flag = 0;
960 iip
->ili_format
.ilf_type
= XFS_LI_INODE
;
961 iip
->ili_format
.ilf_ino
= ip
->i_ino
;
962 iip
->ili_format
.ilf_blkno
= ip
->i_blkno
;
963 iip
->ili_format
.ilf_len
= ip
->i_len
;
964 iip
->ili_format
.ilf_boffset
= ip
->i_boffset
;
968 * Free the inode log item and any memory hanging off of it.
971 xfs_inode_item_destroy(
974 #ifdef XFS_TRANS_DEBUG
975 if (ip
->i_itemp
->ili_root_size
!= 0) {
976 kmem_free(ip
->i_itemp
->ili_orig_root
,
977 ip
->i_itemp
->ili_root_size
);
980 kmem_zone_free(xfs_ili_zone
, ip
->i_itemp
);
985 * This is the inode flushing I/O completion routine. It is called
986 * from interrupt level when the buffer containing the inode is
987 * flushed to disk. It is responsible for removing the inode item
988 * from the AIL if it has not been re-logged, and unlocking the inode's
995 xfs_inode_log_item_t
*iip
)
1000 ip
= iip
->ili_inode
;
1003 * We only want to pull the item from the AIL if it is
1004 * actually there and its location in the log has not
1005 * changed since we started the flush. Thus, we only bother
1006 * if the ili_logged flag is set and the inode's lsn has not
1007 * changed. First we check the lsn outside
1008 * the lock since it's cheaper, and then we recheck while
1009 * holding the lock before removing the inode from the AIL.
1011 if (iip
->ili_logged
&&
1012 (iip
->ili_item
.li_lsn
== iip
->ili_flush_lsn
)) {
1013 AIL_LOCK(ip
->i_mount
, s
);
1014 if (iip
->ili_item
.li_lsn
== iip
->ili_flush_lsn
) {
1016 * xfs_trans_delete_ail() drops the AIL lock.
1018 xfs_trans_delete_ail(ip
->i_mount
,
1019 (xfs_log_item_t
*)iip
, s
);
1021 AIL_UNLOCK(ip
->i_mount
, s
);
1025 iip
->ili_logged
= 0;
1028 * Clear the ili_last_fields bits now that we know that the
1029 * data corresponding to them is safely on disk.
1031 iip
->ili_last_fields
= 0;
1034 * Release the inode's flush lock since we're done with it.
1042 * This is the inode flushing abort routine. It is called
1043 * from xfs_iflush when the filesystem is shutting down to clean
1044 * up the inode state.
1045 * It is responsible for removing the inode item
1046 * from the AIL if it has not been re-logged, and unlocking the inode's
1053 xfs_inode_log_item_t
*iip
;
1060 if (iip
->ili_item
.li_flags
& XFS_LI_IN_AIL
) {
1062 if (iip
->ili_item
.li_flags
& XFS_LI_IN_AIL
) {
1064 * xfs_trans_delete_ail() drops the AIL lock.
1066 xfs_trans_delete_ail(mp
, (xfs_log_item_t
*)iip
,
1071 iip
->ili_logged
= 0;
1073 * Clear the ili_last_fields bits now that we know that the
1074 * data corresponding to them is safely on disk.
1076 iip
->ili_last_fields
= 0;
1078 * Clear the inode logging fields so no more flushes are
1081 iip
->ili_format
.ilf_fields
= 0;
1084 * Release the inode's flush lock since we're done with it.
1092 xfs_inode_log_item_t
*iip
)
1094 xfs_iflush_abort(iip
->ili_inode
);