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(bp->b_transp == 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);
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.
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_islocked(bp));
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(bp->b_transp == tp);
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(!bp->b_error);
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 (bp->b_transp == tp) {
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);
298 xfs_ioerror_alert("xfs_trans_read_buf", mp,
305 if (xfs_error_target == target) {
306 if (((xfs_req_num++) % xfs_error_mod) == 0) {
308 xfs_debug(mp, "Returning error!");
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_islocked(bp));
331 ASSERT(bp->b_transp == tp);
332 ASSERT(bp->b_fspriv != NULL);
333 ASSERT(!bp->b_error);
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);
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);
386 return (flags & XBF_TRYLOCK) ?
387 0 : XFS_ERROR(ENOMEM);
391 XFS_BUF_SUPER_STALE(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 xfs_debug(mp, "Returning trans error!");
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 xfs_notice(mp, "about to pop assert, bp == 0x%p", bp);
432 ASSERT((bp->b_flags & (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;
464 * Default to a normal brelse() call if the tp is NULL.
467 struct xfs_log_item *lip = bp->b_fspriv;
469 ASSERT(bp->b_transp == NULL);
472 * If there's a buf log item attached to the buffer,
473 * then let the AIL know that the buffer is being
476 if (lip != NULL && lip->li_type == XFS_LI_BUF) {
478 xfs_trans_unlocked_item(bip->bli_item.li_ailp, lip);
484 ASSERT(bp->b_transp == tp);
486 ASSERT(bip->bli_item.li_type == XFS_LI_BUF);
487 ASSERT(!(bip->bli_flags & XFS_BLI_STALE));
488 ASSERT(!(bip->bli_format.blf_flags & XFS_BLF_CANCEL));
489 ASSERT(atomic_read(&bip->bli_refcount) > 0);
491 trace_xfs_trans_brelse(bip);
494 * If the release is just for a recursive lock,
495 * then decrement the count and return.
497 if (bip->bli_recur > 0) {
503 * If the buffer is dirty within this transaction, we can't
504 * release it until we commit.
506 if (bip->bli_item.li_desc->lid_flags & XFS_LID_DIRTY)
510 * If the buffer has been invalidated, then we can't release
511 * it until the transaction commits to disk unless it is re-dirtied
512 * as part of this transaction. This prevents us from pulling
513 * the item from the AIL before we should.
515 if (bip->bli_flags & XFS_BLI_STALE)
518 ASSERT(!(bip->bli_flags & XFS_BLI_LOGGED));
521 * Free up the log item descriptor tracking the released item.
523 xfs_trans_del_item(&bip->bli_item);
526 * Clear the hold flag in the buf log item if it is set.
527 * We wouldn't want the next user of the buffer to
530 if (bip->bli_flags & XFS_BLI_HOLD) {
531 bip->bli_flags &= ~XFS_BLI_HOLD;
535 * Drop our reference to the buf log item.
537 atomic_dec(&bip->bli_refcount);
540 * If the buf item is not tracking data in the log, then
541 * we must free it before releasing the buffer back to the
542 * free pool. Before releasing the buffer to the free pool,
543 * clear the transaction pointer in b_fsprivate2 to dissolve
544 * its relation to this transaction.
546 if (!xfs_buf_item_dirty(bip)) {
548 ASSERT(bp->b_pincount == 0);
550 ASSERT(atomic_read(&bip->bli_refcount) == 0);
551 ASSERT(!(bip->bli_item.li_flags & XFS_LI_IN_AIL));
552 ASSERT(!(bip->bli_flags & XFS_BLI_INODE_ALLOC_BUF));
553 xfs_buf_item_relse(bp);
559 * If we've still got a buf log item on the buffer, then
560 * tell the AIL that the buffer is being unlocked.
563 xfs_trans_unlocked_item(bip->bli_item.li_ailp,
564 (xfs_log_item_t*)bip);
572 * Mark the buffer as not needing to be unlocked when the buf item's
573 * IOP_UNLOCK() routine is called. The buffer must already be locked
574 * and associated with the given transaction.
578 xfs_trans_bhold(xfs_trans_t *tp,
581 xfs_buf_log_item_t *bip = bp->b_fspriv;
583 ASSERT(XFS_BUF_ISBUSY(bp));
584 ASSERT(bp->b_transp == tp);
586 ASSERT(!(bip->bli_flags & XFS_BLI_STALE));
587 ASSERT(!(bip->bli_format.blf_flags & XFS_BLF_CANCEL));
588 ASSERT(atomic_read(&bip->bli_refcount) > 0);
590 bip->bli_flags |= XFS_BLI_HOLD;
591 trace_xfs_trans_bhold(bip);
595 * Cancel the previous buffer hold request made on this buffer
596 * for this transaction.
599 xfs_trans_bhold_release(xfs_trans_t *tp,
602 xfs_buf_log_item_t *bip = bp->b_fspriv;
604 ASSERT(XFS_BUF_ISBUSY(bp));
605 ASSERT(bp->b_transp == tp);
607 ASSERT(!(bip->bli_flags & XFS_BLI_STALE));
608 ASSERT(!(bip->bli_format.blf_flags & XFS_BLF_CANCEL));
609 ASSERT(atomic_read(&bip->bli_refcount) > 0);
610 ASSERT(bip->bli_flags & XFS_BLI_HOLD);
612 bip->bli_flags &= ~XFS_BLI_HOLD;
613 trace_xfs_trans_bhold_release(bip);
617 * This is called to mark bytes first through last inclusive of the given
618 * buffer as needing to be logged when the transaction is committed.
619 * The buffer must already be associated with the given transaction.
621 * First and last are numbers relative to the beginning of this buffer,
622 * so the first byte in the buffer is numbered 0 regardless of the
626 xfs_trans_log_buf(xfs_trans_t *tp,
631 xfs_buf_log_item_t *bip = bp->b_fspriv;
633 ASSERT(XFS_BUF_ISBUSY(bp));
634 ASSERT(bp->b_transp == tp);
636 ASSERT((first <= last) && (last < XFS_BUF_COUNT(bp)));
637 ASSERT(bp->b_iodone == NULL ||
638 bp->b_iodone == xfs_buf_iodone_callbacks);
641 * Mark the buffer as needing to be written out eventually,
642 * and set its iodone function to remove the buffer's buf log
643 * item from the AIL and free it when the buffer is flushed
644 * to disk. See xfs_buf_attach_iodone() for more details
645 * on li_cb and xfs_buf_iodone_callbacks().
646 * If we end up aborting this transaction, we trap this buffer
647 * inside the b_bdstrat callback so that this won't get written to
650 XFS_BUF_DELAYWRITE(bp);
653 ASSERT(atomic_read(&bip->bli_refcount) > 0);
654 bp->b_iodone = xfs_buf_iodone_callbacks;
655 bip->bli_item.li_cb = xfs_buf_iodone;
657 trace_xfs_trans_log_buf(bip);
660 * If we invalidated the buffer within this transaction, then
661 * cancel the invalidation now that we're dirtying the buffer
662 * again. There are no races with the code in xfs_buf_item_unpin(),
663 * because we have a reference to the buffer this entire time.
665 if (bip->bli_flags & XFS_BLI_STALE) {
666 bip->bli_flags &= ~XFS_BLI_STALE;
667 ASSERT(XFS_BUF_ISSTALE(bp));
669 bip->bli_format.blf_flags &= ~XFS_BLF_CANCEL;
672 tp->t_flags |= XFS_TRANS_DIRTY;
673 bip->bli_item.li_desc->lid_flags |= XFS_LID_DIRTY;
674 bip->bli_flags |= XFS_BLI_LOGGED;
675 xfs_buf_item_log(bip, first, last);
680 * This called to invalidate a buffer that is being used within
681 * a transaction. Typically this is because the blocks in the
682 * buffer are being freed, so we need to prevent it from being
683 * written out when we're done. Allowing it to be written again
684 * might overwrite data in the free blocks if they are reallocated
687 * We prevent the buffer from being written out by clearing the
688 * B_DELWRI flag. We can't always
689 * get rid of the buf log item at this point, though, because
690 * the buffer may still be pinned by another transaction. If that
691 * is the case, then we'll wait until the buffer is committed to
692 * disk for the last time (we can tell by the ref count) and
693 * free it in xfs_buf_item_unpin(). Until it is cleaned up we
694 * will keep the buffer locked so that the buffer and buf log item
702 xfs_buf_log_item_t *bip = bp->b_fspriv;
704 ASSERT(XFS_BUF_ISBUSY(bp));
705 ASSERT(bp->b_transp == tp);
707 ASSERT(atomic_read(&bip->bli_refcount) > 0);
709 trace_xfs_trans_binval(bip);
711 if (bip->bli_flags & XFS_BLI_STALE) {
713 * If the buffer is already invalidated, then
716 ASSERT(!(XFS_BUF_ISDELAYWRITE(bp)));
717 ASSERT(XFS_BUF_ISSTALE(bp));
718 ASSERT(!(bip->bli_flags & (XFS_BLI_LOGGED | XFS_BLI_DIRTY)));
719 ASSERT(!(bip->bli_format.blf_flags & XFS_BLF_INODE_BUF));
720 ASSERT(bip->bli_format.blf_flags & XFS_BLF_CANCEL);
721 ASSERT(bip->bli_item.li_desc->lid_flags & XFS_LID_DIRTY);
722 ASSERT(tp->t_flags & XFS_TRANS_DIRTY);
727 * Clear the dirty bit in the buffer and set the STALE flag
728 * in the buf log item. The STALE flag will be used in
729 * xfs_buf_item_unpin() to determine if it should clean up
730 * when the last reference to the buf item is given up.
731 * We set the XFS_BLF_CANCEL flag in the buf log format structure
732 * and log the buf item. This will be used at recovery time
733 * to determine that copies of the buffer in the log before
734 * this should not be replayed.
735 * We mark the item descriptor and the transaction dirty so
736 * that we'll hold the buffer until after the commit.
738 * Since we're invalidating the buffer, we also clear the state
739 * about which parts of the buffer have been logged. We also
740 * clear the flag indicating that this is an inode buffer since
741 * the data in the buffer will no longer be valid.
743 * We set the stale bit in the buffer as well since we're getting
746 XFS_BUF_UNDELAYWRITE(bp);
748 bip->bli_flags |= XFS_BLI_STALE;
749 bip->bli_flags &= ~(XFS_BLI_INODE_BUF | XFS_BLI_LOGGED | XFS_BLI_DIRTY);
750 bip->bli_format.blf_flags &= ~XFS_BLF_INODE_BUF;
751 bip->bli_format.blf_flags |= XFS_BLF_CANCEL;
752 memset((char *)(bip->bli_format.blf_data_map), 0,
753 (bip->bli_format.blf_map_size * sizeof(uint)));
754 bip->bli_item.li_desc->lid_flags |= XFS_LID_DIRTY;
755 tp->t_flags |= XFS_TRANS_DIRTY;
759 * This call is used to indicate that the buffer contains on-disk inodes which
760 * must be handled specially during recovery. They require special handling
761 * because only the di_next_unlinked from the inodes in the buffer should be
762 * recovered. The rest of the data in the buffer is logged via the inodes
765 * All we do is set the XFS_BLI_INODE_BUF flag in the items flags so it can be
766 * transferred to the buffer's log format structure so that we'll know what to
767 * do at recovery time.
774 xfs_buf_log_item_t *bip = bp->b_fspriv;
776 ASSERT(XFS_BUF_ISBUSY(bp));
777 ASSERT(bp->b_transp == tp);
779 ASSERT(atomic_read(&bip->bli_refcount) > 0);
781 bip->bli_flags |= XFS_BLI_INODE_BUF;
785 * This call is used to indicate that the buffer is going to
786 * be staled and was an inode buffer. This means it gets
787 * special processing during unpin - where any inodes
788 * associated with the buffer should be removed from ail.
789 * There is also special processing during recovery,
790 * any replay of the inodes in the buffer needs to be
791 * prevented as the buffer may have been reused.
794 xfs_trans_stale_inode_buf(
798 xfs_buf_log_item_t *bip = bp->b_fspriv;
800 ASSERT(XFS_BUF_ISBUSY(bp));
801 ASSERT(bp->b_transp == tp);
803 ASSERT(atomic_read(&bip->bli_refcount) > 0);
805 bip->bli_flags |= XFS_BLI_STALE_INODE;
806 bip->bli_item.li_cb = xfs_buf_iodone;
810 * Mark the buffer as being one which contains newly allocated
811 * inodes. We need to make sure that even if this buffer is
812 * relogged as an 'inode buf' we still recover all of the inode
813 * images in the face of a crash. This works in coordination with
814 * xfs_buf_item_committed() to ensure that the buffer remains in the
815 * AIL at its original location even after it has been relogged.
819 xfs_trans_inode_alloc_buf(
823 xfs_buf_log_item_t *bip = bp->b_fspriv;
825 ASSERT(XFS_BUF_ISBUSY(bp));
826 ASSERT(bp->b_transp == tp);
828 ASSERT(atomic_read(&bip->bli_refcount) > 0);
830 bip->bli_flags |= XFS_BLI_INODE_ALLOC_BUF;
835 * Similar to xfs_trans_inode_buf(), this marks the buffer as a cluster of
836 * dquots. However, unlike in inode buffer recovery, dquot buffers get
837 * recovered in their entirety. (Hence, no XFS_BLI_DQUOT_ALLOC_BUF flag).
838 * The only thing that makes dquot buffers different from regular
839 * buffers is that we must not replay dquot bufs when recovering
840 * if a _corresponding_ quotaoff has happened. We also have to distinguish
841 * between usr dquot bufs and grp dquot bufs, because usr and grp quotas
842 * can be turned off independently.
851 xfs_buf_log_item_t *bip = bp->b_fspriv;
853 ASSERT(XFS_BUF_ISBUSY(bp));
854 ASSERT(bp->b_transp == tp);
856 ASSERT(type == XFS_BLF_UDQUOT_BUF ||
857 type == XFS_BLF_PDQUOT_BUF ||
858 type == XFS_BLF_GDQUOT_BUF);
859 ASSERT(atomic_read(&bip->bli_refcount) > 0);
861 bip->bli_format.blf_flags |= type;