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_bmap_btree.h"
29 #include "xfs_alloc_btree.h"
30 #include "xfs_ialloc_btree.h"
31 #include "xfs_dinode.h"
32 #include "xfs_inode.h"
33 #include "xfs_buf_item.h"
34 #include "xfs_trans_priv.h"
35 #include "xfs_error.h"
37 #include "xfs_trace.h"
40 * Check to see if a buffer matching the given parameters is already
41 * a part of the given transaction.
43 STATIC
struct xfs_buf
*
44 xfs_trans_buf_item_match(
46 struct xfs_buftarg
*target
,
50 struct xfs_log_item_desc
*lidp
;
51 struct xfs_buf_log_item
*blip
;
54 list_for_each_entry(lidp
, &tp
->t_items
, lid_trans
) {
55 blip
= (struct xfs_buf_log_item
*)lidp
->lid_item
;
56 if (blip
->bli_item
.li_type
== XFS_LI_BUF
&&
57 XFS_BUF_TARGET(blip
->bli_buf
) == target
&&
58 XFS_BUF_ADDR(blip
->bli_buf
) == blkno
&&
59 XFS_BUF_COUNT(blip
->bli_buf
) == len
)
67 * Add the locked buffer to the transaction.
69 * The buffer must be locked, and it cannot be associated with any
72 * If the buffer does not yet have a buf log item associated with it,
73 * then allocate one for it. Then add the buf item to the transaction.
81 struct xfs_buf_log_item
*bip
;
83 ASSERT(XFS_BUF_ISBUSY(bp
));
84 ASSERT(XFS_BUF_FSPRIVATE2(bp
, void *) == NULL
);
87 * The xfs_buf_log_item pointer is stored in b_fsprivate. If
88 * it doesn't have one yet, then allocate one and initialize it.
89 * The checks to see if one is there are in xfs_buf_item_init().
91 xfs_buf_item_init(bp
, tp
->t_mountp
);
92 bip
= XFS_BUF_FSPRIVATE(bp
, xfs_buf_log_item_t
*);
93 ASSERT(!(bip
->bli_flags
& XFS_BLI_STALE
));
94 ASSERT(!(bip
->bli_format
.blf_flags
& XFS_BLF_CANCEL
));
95 ASSERT(!(bip
->bli_flags
& XFS_BLI_LOGGED
));
100 * Take a reference for this transaction on the buf item.
102 atomic_inc(&bip
->bli_refcount
);
105 * Get a log_item_desc to point at the new item.
107 xfs_trans_add_item(tp
, &bip
->bli_item
);
110 * Initialize b_fsprivate2 so we can find it with incore_match()
111 * in xfs_trans_get_buf() and friends above.
113 XFS_BUF_SET_FSPRIVATE2(bp
, tp
);
119 struct xfs_trans
*tp
,
122 _xfs_trans_bjoin(tp
, bp
, 0);
123 trace_xfs_trans_bjoin(bp
->b_fspriv
);
127 * Get and lock the buffer for the caller if it is not already
128 * locked within the given transaction. If it is already locked
129 * within the transaction, just increment its lock recursion count
130 * and return a pointer to it.
132 * If the transaction pointer is NULL, make this just a normal
136 xfs_trans_get_buf(xfs_trans_t
*tp
,
137 xfs_buftarg_t
*target_dev
,
143 xfs_buf_log_item_t
*bip
;
146 flags
= XBF_LOCK
| XBF_MAPPED
;
149 * Default to a normal get_buf() call if the tp is NULL.
152 return xfs_buf_get(target_dev
, blkno
, len
,
153 flags
| XBF_DONT_BLOCK
);
156 * If we find the buffer in the cache with this transaction
157 * pointer in its b_fsprivate2 field, then we know we already
158 * have it locked. In this case we just increment the lock
159 * recursion count and return the buffer to the caller.
161 bp
= xfs_trans_buf_item_match(tp
, target_dev
, blkno
, len
);
163 ASSERT(XFS_BUF_VALUSEMA(bp
) <= 0);
164 if (XFS_FORCED_SHUTDOWN(tp
->t_mountp
))
165 XFS_BUF_SUPER_STALE(bp
);
168 * If the buffer is stale then it was binval'ed
169 * since last read. This doesn't matter since the
170 * caller isn't allowed to use the data anyway.
172 else if (XFS_BUF_ISSTALE(bp
))
173 ASSERT(!XFS_BUF_ISDELAYWRITE(bp
));
175 ASSERT(XFS_BUF_FSPRIVATE2(bp
, xfs_trans_t
*) == tp
);
176 bip
= XFS_BUF_FSPRIVATE(bp
, xfs_buf_log_item_t
*);
178 ASSERT(atomic_read(&bip
->bli_refcount
) > 0);
180 trace_xfs_trans_get_buf_recur(bip
);
185 * We always specify the XBF_DONT_BLOCK flag within a transaction
186 * so that get_buf does not try to push out a delayed write buffer
187 * which might cause another transaction to take place (if the
188 * buffer was delayed alloc). Such recursive transactions can
189 * easily deadlock with our current transaction as well as cause
190 * us to run out of stack space.
192 bp
= xfs_buf_get(target_dev
, blkno
, len
, flags
| XBF_DONT_BLOCK
);
197 ASSERT(!XFS_BUF_GETERROR(bp
));
199 _xfs_trans_bjoin(tp
, bp
, 1);
200 trace_xfs_trans_get_buf(bp
->b_fspriv
);
205 * Get and lock the superblock buffer of this file system for the
208 * We don't need to use incore_match() here, because the superblock
209 * buffer is a private buffer which we keep a pointer to in the
213 xfs_trans_getsb(xfs_trans_t
*tp
,
214 struct xfs_mount
*mp
,
218 xfs_buf_log_item_t
*bip
;
221 * Default to just trying to lock the superblock buffer
225 return (xfs_getsb(mp
, flags
));
229 * If the superblock buffer already has this transaction
230 * pointer in its b_fsprivate2 field, then we know we already
231 * have it locked. In this case we just increment the lock
232 * recursion count and return the buffer to the caller.
235 if (XFS_BUF_FSPRIVATE2(bp
, xfs_trans_t
*) == tp
) {
236 bip
= XFS_BUF_FSPRIVATE(bp
, xfs_buf_log_item_t
*);
238 ASSERT(atomic_read(&bip
->bli_refcount
) > 0);
240 trace_xfs_trans_getsb_recur(bip
);
244 bp
= xfs_getsb(mp
, flags
);
248 _xfs_trans_bjoin(tp
, bp
, 1);
249 trace_xfs_trans_getsb(bp
->b_fspriv
);
254 xfs_buftarg_t
*xfs_error_target
;
257 int xfs_error_mod
= 33;
261 * Get and lock the buffer for the caller if it is not already
262 * locked within the given transaction. If it has not yet been
263 * read in, read it from disk. If it is already locked
264 * within the transaction and already read in, just increment its
265 * lock recursion count and return a pointer to it.
267 * If the transaction pointer is NULL, make this just a normal
274 xfs_buftarg_t
*target
,
281 xfs_buf_log_item_t
*bip
;
285 flags
= XBF_LOCK
| XBF_MAPPED
;
288 * Default to a normal get_buf() call if the tp is NULL.
291 bp
= xfs_buf_read(target
, blkno
, len
, flags
| XBF_DONT_BLOCK
);
293 return (flags
& XBF_TRYLOCK
) ?
294 EAGAIN
: XFS_ERROR(ENOMEM
);
296 if (XFS_BUF_GETERROR(bp
) != 0) {
297 xfs_ioerror_alert("xfs_trans_read_buf", mp
,
299 error
= XFS_BUF_GETERROR(bp
);
305 if (xfs_error_target
== target
) {
306 if (((xfs_req_num
++) % xfs_error_mod
) == 0) {
308 cmn_err(CE_DEBUG
, "Returning error!\n");
309 return XFS_ERROR(EIO
);
314 if (XFS_FORCED_SHUTDOWN(mp
))
321 * If we find the buffer in the cache with this transaction
322 * pointer in its b_fsprivate2 field, then we know we already
323 * have it locked. If it is already read in we just increment
324 * the lock recursion count and return the buffer to the caller.
325 * If the buffer is not yet read in, then we read it in, increment
326 * the lock recursion count, and return it to the caller.
328 bp
= xfs_trans_buf_item_match(tp
, target
, blkno
, len
);
330 ASSERT(XFS_BUF_VALUSEMA(bp
) <= 0);
331 ASSERT(XFS_BUF_FSPRIVATE2(bp
, xfs_trans_t
*) == tp
);
332 ASSERT(XFS_BUF_FSPRIVATE(bp
, void *) != NULL
);
333 ASSERT((XFS_BUF_ISERROR(bp
)) == 0);
334 if (!(XFS_BUF_ISDONE(bp
))) {
335 trace_xfs_trans_read_buf_io(bp
, _RET_IP_
);
336 ASSERT(!XFS_BUF_ISASYNC(bp
));
338 xfsbdstrat(tp
->t_mountp
, bp
);
339 error
= xfs_buf_iowait(bp
);
341 xfs_ioerror_alert("xfs_trans_read_buf", mp
,
345 * We can gracefully recover from most read
346 * errors. Ones we can't are those that happen
347 * after the transaction's already dirty.
349 if (tp
->t_flags
& XFS_TRANS_DIRTY
)
350 xfs_force_shutdown(tp
->t_mountp
,
351 SHUTDOWN_META_IO_ERROR
);
356 * We never locked this buf ourselves, so we shouldn't
357 * brelse it either. Just get out.
359 if (XFS_FORCED_SHUTDOWN(mp
)) {
360 trace_xfs_trans_read_buf_shut(bp
, _RET_IP_
);
362 return XFS_ERROR(EIO
);
366 bip
= XFS_BUF_FSPRIVATE(bp
, xfs_buf_log_item_t
*);
369 ASSERT(atomic_read(&bip
->bli_refcount
) > 0);
370 trace_xfs_trans_read_buf_recur(bip
);
376 * We always specify the XBF_DONT_BLOCK flag within a transaction
377 * so that get_buf does not try to push out a delayed write buffer
378 * which might cause another transaction to take place (if the
379 * buffer was delayed alloc). Such recursive transactions can
380 * easily deadlock with our current transaction as well as cause
381 * us to run out of stack space.
383 bp
= xfs_buf_read(target
, blkno
, len
, flags
| XBF_DONT_BLOCK
);
388 if (XFS_BUF_GETERROR(bp
) != 0) {
389 XFS_BUF_SUPER_STALE(bp
);
390 error
= XFS_BUF_GETERROR(bp
);
392 xfs_ioerror_alert("xfs_trans_read_buf", mp
,
394 if (tp
->t_flags
& XFS_TRANS_DIRTY
)
395 xfs_force_shutdown(tp
->t_mountp
, SHUTDOWN_META_IO_ERROR
);
400 if (xfs_do_error
&& !(tp
->t_flags
& XFS_TRANS_DIRTY
)) {
401 if (xfs_error_target
== target
) {
402 if (((xfs_req_num
++) % xfs_error_mod
) == 0) {
403 xfs_force_shutdown(tp
->t_mountp
,
404 SHUTDOWN_META_IO_ERROR
);
406 cmn_err(CE_DEBUG
, "Returning trans error!\n");
407 return XFS_ERROR(EIO
);
412 if (XFS_FORCED_SHUTDOWN(mp
))
415 _xfs_trans_bjoin(tp
, bp
, 1);
416 trace_xfs_trans_read_buf(bp
->b_fspriv
);
423 * the theory here is that buffer is good but we're
424 * bailing out because the filesystem is being forcibly
425 * shut down. So we should leave the b_flags alone since
426 * the buffer's not staled and just get out.
429 if (XFS_BUF_ISSTALE(bp
) && XFS_BUF_ISDELAYWRITE(bp
))
430 cmn_err(CE_NOTE
, "about to pop assert, bp == 0x%p", bp
);
432 ASSERT((XFS_BUF_BFLAGS(bp
) & (XBF_STALE
|XBF_DELWRI
)) !=
433 (XBF_STALE
|XBF_DELWRI
));
435 trace_xfs_trans_read_buf_shut(bp
, _RET_IP_
);
438 return XFS_ERROR(EIO
);
443 * Release the buffer bp which was previously acquired with one of the
444 * xfs_trans_... buffer allocation routines if the buffer has not
445 * been modified within this transaction. If the buffer is modified
446 * within this transaction, do decrement the recursion count but do
447 * not release the buffer even if the count goes to 0. If the buffer is not
448 * modified within the transaction, decrement the recursion count and
449 * release the buffer if the recursion count goes to 0.
451 * If the buffer is to be released and it was not modified before
452 * this transaction began, then free the buf_log_item associated with it.
454 * If the transaction pointer is NULL, make this just a normal
458 xfs_trans_brelse(xfs_trans_t
*tp
,
461 xfs_buf_log_item_t
*bip
;
465 * Default to a normal brelse() call if the tp is NULL.
468 ASSERT(XFS_BUF_FSPRIVATE2(bp
, void *) == NULL
);
470 * If there's a buf log item attached to the buffer,
471 * then let the AIL know that the buffer is being
474 if (XFS_BUF_FSPRIVATE(bp
, void *) != NULL
) {
475 lip
= XFS_BUF_FSPRIVATE(bp
, xfs_log_item_t
*);
476 if (lip
->li_type
== XFS_LI_BUF
) {
477 bip
= XFS_BUF_FSPRIVATE(bp
,xfs_buf_log_item_t
*);
478 xfs_trans_unlocked_item(bip
->bli_item
.li_ailp
,
486 ASSERT(XFS_BUF_FSPRIVATE2(bp
, xfs_trans_t
*) == tp
);
487 bip
= XFS_BUF_FSPRIVATE(bp
, xfs_buf_log_item_t
*);
488 ASSERT(bip
->bli_item
.li_type
== XFS_LI_BUF
);
489 ASSERT(!(bip
->bli_flags
& XFS_BLI_STALE
));
490 ASSERT(!(bip
->bli_format
.blf_flags
& XFS_BLF_CANCEL
));
491 ASSERT(atomic_read(&bip
->bli_refcount
) > 0);
493 trace_xfs_trans_brelse(bip
);
496 * If the release is just for a recursive lock,
497 * then decrement the count and return.
499 if (bip
->bli_recur
> 0) {
505 * If the buffer is dirty within this transaction, we can't
506 * release it until we commit.
508 if (bip
->bli_item
.li_desc
->lid_flags
& XFS_LID_DIRTY
)
512 * If the buffer has been invalidated, then we can't release
513 * it until the transaction commits to disk unless it is re-dirtied
514 * as part of this transaction. This prevents us from pulling
515 * the item from the AIL before we should.
517 if (bip
->bli_flags
& XFS_BLI_STALE
)
520 ASSERT(!(bip
->bli_flags
& XFS_BLI_LOGGED
));
523 * Free up the log item descriptor tracking the released item.
525 xfs_trans_del_item(&bip
->bli_item
);
528 * Clear the hold flag in the buf log item if it is set.
529 * We wouldn't want the next user of the buffer to
532 if (bip
->bli_flags
& XFS_BLI_HOLD
) {
533 bip
->bli_flags
&= ~XFS_BLI_HOLD
;
537 * Drop our reference to the buf log item.
539 atomic_dec(&bip
->bli_refcount
);
542 * If the buf item is not tracking data in the log, then
543 * we must free it before releasing the buffer back to the
544 * free pool. Before releasing the buffer to the free pool,
545 * clear the transaction pointer in b_fsprivate2 to dissolve
546 * its relation to this transaction.
548 if (!xfs_buf_item_dirty(bip
)) {
550 ASSERT(bp->b_pincount == 0);
552 ASSERT(atomic_read(&bip
->bli_refcount
) == 0);
553 ASSERT(!(bip
->bli_item
.li_flags
& XFS_LI_IN_AIL
));
554 ASSERT(!(bip
->bli_flags
& XFS_BLI_INODE_ALLOC_BUF
));
555 xfs_buf_item_relse(bp
);
558 XFS_BUF_SET_FSPRIVATE2(bp
, NULL
);
561 * If we've still got a buf log item on the buffer, then
562 * tell the AIL that the buffer is being unlocked.
565 xfs_trans_unlocked_item(bip
->bli_item
.li_ailp
,
566 (xfs_log_item_t
*)bip
);
574 * Mark the buffer as not needing to be unlocked when the buf item's
575 * IOP_UNLOCK() routine is called. The buffer must already be locked
576 * and associated with the given transaction.
580 xfs_trans_bhold(xfs_trans_t
*tp
,
583 xfs_buf_log_item_t
*bip
;
585 ASSERT(XFS_BUF_ISBUSY(bp
));
586 ASSERT(XFS_BUF_FSPRIVATE2(bp
, xfs_trans_t
*) == tp
);
587 ASSERT(XFS_BUF_FSPRIVATE(bp
, void *) != NULL
);
589 bip
= XFS_BUF_FSPRIVATE(bp
, xfs_buf_log_item_t
*);
590 ASSERT(!(bip
->bli_flags
& XFS_BLI_STALE
));
591 ASSERT(!(bip
->bli_format
.blf_flags
& XFS_BLF_CANCEL
));
592 ASSERT(atomic_read(&bip
->bli_refcount
) > 0);
593 bip
->bli_flags
|= XFS_BLI_HOLD
;
594 trace_xfs_trans_bhold(bip
);
598 * Cancel the previous buffer hold request made on this buffer
599 * for this transaction.
602 xfs_trans_bhold_release(xfs_trans_t
*tp
,
605 xfs_buf_log_item_t
*bip
;
607 ASSERT(XFS_BUF_ISBUSY(bp
));
608 ASSERT(XFS_BUF_FSPRIVATE2(bp
, xfs_trans_t
*) == tp
);
609 ASSERT(XFS_BUF_FSPRIVATE(bp
, void *) != NULL
);
611 bip
= XFS_BUF_FSPRIVATE(bp
, xfs_buf_log_item_t
*);
612 ASSERT(!(bip
->bli_flags
& XFS_BLI_STALE
));
613 ASSERT(!(bip
->bli_format
.blf_flags
& XFS_BLF_CANCEL
));
614 ASSERT(atomic_read(&bip
->bli_refcount
) > 0);
615 ASSERT(bip
->bli_flags
& XFS_BLI_HOLD
);
616 bip
->bli_flags
&= ~XFS_BLI_HOLD
;
618 trace_xfs_trans_bhold_release(bip
);
622 * This is called to mark bytes first through last inclusive of the given
623 * buffer as needing to be logged when the transaction is committed.
624 * The buffer must already be associated with the given transaction.
626 * First and last are numbers relative to the beginning of this buffer,
627 * so the first byte in the buffer is numbered 0 regardless of the
631 xfs_trans_log_buf(xfs_trans_t
*tp
,
636 xfs_buf_log_item_t
*bip
;
638 ASSERT(XFS_BUF_ISBUSY(bp
));
639 ASSERT(XFS_BUF_FSPRIVATE2(bp
, xfs_trans_t
*) == tp
);
640 ASSERT(XFS_BUF_FSPRIVATE(bp
, void *) != NULL
);
641 ASSERT((first
<= last
) && (last
< XFS_BUF_COUNT(bp
)));
642 ASSERT((XFS_BUF_IODONE_FUNC(bp
) == NULL
) ||
643 (XFS_BUF_IODONE_FUNC(bp
) == xfs_buf_iodone_callbacks
));
646 * Mark the buffer as needing to be written out eventually,
647 * and set its iodone function to remove the buffer's buf log
648 * item from the AIL and free it when the buffer is flushed
649 * to disk. See xfs_buf_attach_iodone() for more details
650 * on li_cb and xfs_buf_iodone_callbacks().
651 * If we end up aborting this transaction, we trap this buffer
652 * inside the b_bdstrat callback so that this won't get written to
655 XFS_BUF_DELAYWRITE(bp
);
658 bip
= XFS_BUF_FSPRIVATE(bp
, xfs_buf_log_item_t
*);
659 ASSERT(atomic_read(&bip
->bli_refcount
) > 0);
660 XFS_BUF_SET_IODONE_FUNC(bp
, xfs_buf_iodone_callbacks
);
661 bip
->bli_item
.li_cb
= xfs_buf_iodone
;
663 trace_xfs_trans_log_buf(bip
);
666 * If we invalidated the buffer within this transaction, then
667 * cancel the invalidation now that we're dirtying the buffer
668 * again. There are no races with the code in xfs_buf_item_unpin(),
669 * because we have a reference to the buffer this entire time.
671 if (bip
->bli_flags
& XFS_BLI_STALE
) {
672 bip
->bli_flags
&= ~XFS_BLI_STALE
;
673 ASSERT(XFS_BUF_ISSTALE(bp
));
675 bip
->bli_format
.blf_flags
&= ~XFS_BLF_CANCEL
;
678 tp
->t_flags
|= XFS_TRANS_DIRTY
;
679 bip
->bli_item
.li_desc
->lid_flags
|= XFS_LID_DIRTY
;
680 bip
->bli_flags
|= XFS_BLI_LOGGED
;
681 xfs_buf_item_log(bip
, first
, last
);
686 * This called to invalidate a buffer that is being used within
687 * a transaction. Typically this is because the blocks in the
688 * buffer are being freed, so we need to prevent it from being
689 * written out when we're done. Allowing it to be written again
690 * might overwrite data in the free blocks if they are reallocated
693 * We prevent the buffer from being written out by clearing the
694 * B_DELWRI flag. We can't always
695 * get rid of the buf log item at this point, though, because
696 * the buffer may still be pinned by another transaction. If that
697 * is the case, then we'll wait until the buffer is committed to
698 * disk for the last time (we can tell by the ref count) and
699 * free it in xfs_buf_item_unpin(). Until it is cleaned up we
700 * will keep the buffer locked so that the buffer and buf log item
708 xfs_buf_log_item_t
*bip
;
710 ASSERT(XFS_BUF_ISBUSY(bp
));
711 ASSERT(XFS_BUF_FSPRIVATE2(bp
, xfs_trans_t
*) == tp
);
712 ASSERT(XFS_BUF_FSPRIVATE(bp
, void *) != NULL
);
714 bip
= XFS_BUF_FSPRIVATE(bp
, xfs_buf_log_item_t
*);
715 ASSERT(atomic_read(&bip
->bli_refcount
) > 0);
717 trace_xfs_trans_binval(bip
);
719 if (bip
->bli_flags
& XFS_BLI_STALE
) {
721 * If the buffer is already invalidated, then
724 ASSERT(!(XFS_BUF_ISDELAYWRITE(bp
)));
725 ASSERT(XFS_BUF_ISSTALE(bp
));
726 ASSERT(!(bip
->bli_flags
& (XFS_BLI_LOGGED
| XFS_BLI_DIRTY
)));
727 ASSERT(!(bip
->bli_format
.blf_flags
& XFS_BLF_INODE_BUF
));
728 ASSERT(bip
->bli_format
.blf_flags
& XFS_BLF_CANCEL
);
729 ASSERT(bip
->bli_item
.li_desc
->lid_flags
& XFS_LID_DIRTY
);
730 ASSERT(tp
->t_flags
& XFS_TRANS_DIRTY
);
735 * Clear the dirty bit in the buffer and set the STALE flag
736 * in the buf log item. The STALE flag will be used in
737 * xfs_buf_item_unpin() to determine if it should clean up
738 * when the last reference to the buf item is given up.
739 * We set the XFS_BLF_CANCEL flag in the buf log format structure
740 * and log the buf item. This will be used at recovery time
741 * to determine that copies of the buffer in the log before
742 * this should not be replayed.
743 * We mark the item descriptor and the transaction dirty so
744 * that we'll hold the buffer until after the commit.
746 * Since we're invalidating the buffer, we also clear the state
747 * about which parts of the buffer have been logged. We also
748 * clear the flag indicating that this is an inode buffer since
749 * the data in the buffer will no longer be valid.
751 * We set the stale bit in the buffer as well since we're getting
754 XFS_BUF_UNDELAYWRITE(bp
);
756 bip
->bli_flags
|= XFS_BLI_STALE
;
757 bip
->bli_flags
&= ~(XFS_BLI_INODE_BUF
| XFS_BLI_LOGGED
| XFS_BLI_DIRTY
);
758 bip
->bli_format
.blf_flags
&= ~XFS_BLF_INODE_BUF
;
759 bip
->bli_format
.blf_flags
|= XFS_BLF_CANCEL
;
760 memset((char *)(bip
->bli_format
.blf_data_map
), 0,
761 (bip
->bli_format
.blf_map_size
* sizeof(uint
)));
762 bip
->bli_item
.li_desc
->lid_flags
|= XFS_LID_DIRTY
;
763 tp
->t_flags
|= XFS_TRANS_DIRTY
;
767 * This call is used to indicate that the buffer contains on-disk inodes which
768 * must be handled specially during recovery. They require special handling
769 * because only the di_next_unlinked from the inodes in the buffer should be
770 * recovered. The rest of the data in the buffer is logged via the inodes
773 * All we do is set the XFS_BLI_INODE_BUF flag in the items flags so it can be
774 * transferred to the buffer's log format structure so that we'll know what to
775 * do at recovery time.
782 xfs_buf_log_item_t
*bip
;
784 ASSERT(XFS_BUF_ISBUSY(bp
));
785 ASSERT(XFS_BUF_FSPRIVATE2(bp
, xfs_trans_t
*) == tp
);
786 ASSERT(XFS_BUF_FSPRIVATE(bp
, void *) != NULL
);
788 bip
= XFS_BUF_FSPRIVATE(bp
, xfs_buf_log_item_t
*);
789 ASSERT(atomic_read(&bip
->bli_refcount
) > 0);
791 bip
->bli_flags
|= XFS_BLI_INODE_BUF
;
795 * This call is used to indicate that the buffer is going to
796 * be staled and was an inode buffer. This means it gets
797 * special processing during unpin - where any inodes
798 * associated with the buffer should be removed from ail.
799 * There is also special processing during recovery,
800 * any replay of the inodes in the buffer needs to be
801 * prevented as the buffer may have been reused.
804 xfs_trans_stale_inode_buf(
808 xfs_buf_log_item_t
*bip
;
810 ASSERT(XFS_BUF_ISBUSY(bp
));
811 ASSERT(XFS_BUF_FSPRIVATE2(bp
, xfs_trans_t
*) == tp
);
812 ASSERT(XFS_BUF_FSPRIVATE(bp
, void *) != NULL
);
814 bip
= XFS_BUF_FSPRIVATE(bp
, xfs_buf_log_item_t
*);
815 ASSERT(atomic_read(&bip
->bli_refcount
) > 0);
817 bip
->bli_flags
|= XFS_BLI_STALE_INODE
;
818 bip
->bli_item
.li_cb
= xfs_buf_iodone
;
822 * Mark the buffer as being one which contains newly allocated
823 * inodes. We need to make sure that even if this buffer is
824 * relogged as an 'inode buf' we still recover all of the inode
825 * images in the face of a crash. This works in coordination with
826 * xfs_buf_item_committed() to ensure that the buffer remains in the
827 * AIL at its original location even after it has been relogged.
831 xfs_trans_inode_alloc_buf(
835 xfs_buf_log_item_t
*bip
;
837 ASSERT(XFS_BUF_ISBUSY(bp
));
838 ASSERT(XFS_BUF_FSPRIVATE2(bp
, xfs_trans_t
*) == tp
);
839 ASSERT(XFS_BUF_FSPRIVATE(bp
, void *) != NULL
);
841 bip
= XFS_BUF_FSPRIVATE(bp
, xfs_buf_log_item_t
*);
842 ASSERT(atomic_read(&bip
->bli_refcount
) > 0);
844 bip
->bli_flags
|= XFS_BLI_INODE_ALLOC_BUF
;
849 * Similar to xfs_trans_inode_buf(), this marks the buffer as a cluster of
850 * dquots. However, unlike in inode buffer recovery, dquot buffers get
851 * recovered in their entirety. (Hence, no XFS_BLI_DQUOT_ALLOC_BUF flag).
852 * The only thing that makes dquot buffers different from regular
853 * buffers is that we must not replay dquot bufs when recovering
854 * if a _corresponding_ quotaoff has happened. We also have to distinguish
855 * between usr dquot bufs and grp dquot bufs, because usr and grp quotas
856 * can be turned off independently.
865 xfs_buf_log_item_t
*bip
;
867 ASSERT(XFS_BUF_ISBUSY(bp
));
868 ASSERT(XFS_BUF_FSPRIVATE2(bp
, xfs_trans_t
*) == tp
);
869 ASSERT(XFS_BUF_FSPRIVATE(bp
, void *) != NULL
);
870 ASSERT(type
== XFS_BLF_UDQUOT_BUF
||
871 type
== XFS_BLF_PDQUOT_BUF
||
872 type
== XFS_BLF_GDQUOT_BUF
);
874 bip
= XFS_BUF_FSPRIVATE(bp
, xfs_buf_log_item_t
*);
875 ASSERT(atomic_read(&bip
->bli_refcount
) > 0);
877 bip
->bli_format
.blf_flags
|= type
;
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