2 * Copyright (c) 2000-2005 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"
25 #include "xfs_trans.h"
29 #include "xfs_dmapi.h"
30 #include "xfs_mount.h"
31 #include "xfs_bmap_btree.h"
32 #include "xfs_alloc_btree.h"
33 #include "xfs_ialloc_btree.h"
34 #include "xfs_dir2_sf.h"
35 #include "xfs_attr_sf.h"
36 #include "xfs_dinode.h"
37 #include "xfs_inode.h"
38 #include "xfs_btree.h"
39 #include "xfs_ialloc.h"
40 #include "xfs_quota.h"
41 #include "xfs_utils.h"
42 #include "xfs_trans_priv.h"
43 #include "xfs_inode_item.h"
45 #include "xfs_btree_trace.h"
46 #include "xfs_dir2_trace.h"
50 * Allocate and initialise an xfs_inode.
52 STATIC struct xfs_inode *
60 * if this didn't occur in transactions, we could use
61 * KM_MAYFAIL and return NULL here on ENOMEM. Set the
62 * code up to do this anyway.
64 ip = kmem_zone_alloc(xfs_inode_zone, KM_SLEEP);
67 if (inode_init_always(mp->m_super, VFS_I(ip))) {
68 kmem_zone_free(xfs_inode_zone, ip);
72 ASSERT(atomic_read(&ip->i_iocount) == 0);
73 ASSERT(atomic_read(&ip->i_pincount) == 0);
74 ASSERT(!spin_is_locked(&ip->i_flags_lock));
75 ASSERT(completion_done(&ip->i_flush));
77 /* initialise the xfs inode */
80 memset(&ip->i_imap, 0, sizeof(struct xfs_imap));
82 memset(&ip->i_df, 0, sizeof(xfs_ifork_t));
84 ip->i_update_core = 0;
85 ip->i_update_size = 0;
86 ip->i_delayed_blks = 0;
87 memset(&ip->i_d, 0, sizeof(xfs_icdinode_t));
92 * Initialize inode's trace buffers.
94 #ifdef XFS_INODE_TRACE
95 ip->i_trace = ktrace_alloc(INODE_TRACE_SIZE, KM_NOFS);
98 ip->i_xtrace = ktrace_alloc(XFS_BMAP_KTRACE_SIZE, KM_NOFS);
100 #ifdef XFS_BTREE_TRACE
101 ip->i_btrace = ktrace_alloc(XFS_BMBT_KTRACE_SIZE, KM_NOFS);
104 ip->i_rwtrace = ktrace_alloc(XFS_RW_KTRACE_SIZE, KM_NOFS);
106 #ifdef XFS_ILOCK_TRACE
107 ip->i_lock_trace = ktrace_alloc(XFS_ILOCK_KTRACE_SIZE, KM_NOFS);
109 #ifdef XFS_DIR2_TRACE
110 ip->i_dir_trace = ktrace_alloc(XFS_DIR2_KTRACE_SIZE, KM_NOFS);
113 /* prevent anyone from using this yet */
114 VFS_I(ip)->i_state = I_NEW|I_LOCK;
120 * Check the validity of the inode we just found it the cache
124 struct xfs_perag *pag,
125 struct xfs_inode *ip,
127 int lock_flags) __releases(pag->pag_ici_lock)
129 struct xfs_mount *mp = ip->i_mount;
133 * If INEW is set this inode is being set up
134 * If IRECLAIM is set this inode is being torn down
135 * Pause and try again.
137 if (xfs_iflags_test(ip, (XFS_INEW|XFS_IRECLAIM))) {
138 XFS_STATS_INC(xs_ig_frecycle);
142 /* If IRECLAIMABLE is set, we've torn down the vfs inode part */
143 if (xfs_iflags_test(ip, XFS_IRECLAIMABLE)) {
146 * If lookup is racing with unlink, then we should return an
147 * error immediately so we don't remove it from the reclaim
148 * list and potentially leak the inode.
150 if ((ip->i_d.di_mode == 0) && !(flags & XFS_IGET_CREATE)) {
155 xfs_itrace_exit_tag(ip, "xfs_iget.alloc");
158 * We need to re-initialise the VFS inode as it has been
159 * 'freed' by the VFS. Do this here so we can deal with
160 * errors cleanly, then tag it so it can be set up correctly
163 if (inode_init_always(mp->m_super, VFS_I(ip))) {
169 * We must set the XFS_INEW flag before clearing the
170 * XFS_IRECLAIMABLE flag so that if a racing lookup does
171 * not find the XFS_IRECLAIMABLE above but has the igrab()
172 * below succeed we can safely check XFS_INEW to detect
173 * that this inode is still being initialised.
175 xfs_iflags_set(ip, XFS_INEW);
176 xfs_iflags_clear(ip, XFS_IRECLAIMABLE);
178 /* clear the radix tree reclaim flag as well. */
179 __xfs_inode_clear_reclaim_tag(mp, pag, ip);
180 } else if (!igrab(VFS_I(ip))) {
181 /* If the VFS inode is being torn down, pause and try again. */
182 XFS_STATS_INC(xs_ig_frecycle);
184 } else if (xfs_iflags_test(ip, XFS_INEW)) {
186 * We are racing with another cache hit that is
187 * currently recycling this inode out of the XFS_IRECLAIMABLE
188 * state. Wait for the initialisation to complete before
191 wait_on_inode(VFS_I(ip));
194 if (ip->i_d.di_mode == 0 && !(flags & XFS_IGET_CREATE)) {
200 /* We've got a live one. */
201 read_unlock(&pag->pag_ici_lock);
204 xfs_ilock(ip, lock_flags);
206 xfs_iflags_clear(ip, XFS_ISTALE);
207 xfs_itrace_exit_tag(ip, "xfs_iget.found");
208 XFS_STATS_INC(xs_ig_found);
212 read_unlock(&pag->pag_ici_lock);
219 struct xfs_mount *mp,
220 struct xfs_perag *pag,
223 struct xfs_inode **ipp,
226 int lock_flags) __releases(pag->pag_ici_lock)
228 struct xfs_inode *ip;
230 unsigned long first_index, mask;
231 xfs_agino_t agino = XFS_INO_TO_AGINO(mp, ino);
233 ip = xfs_inode_alloc(mp, ino);
237 error = xfs_iread(mp, tp, ip, bno, flags);
241 xfs_itrace_exit_tag(ip, "xfs_iget.alloc");
243 if ((ip->i_d.di_mode == 0) && !(flags & XFS_IGET_CREATE)) {
249 * Preload the radix tree so we can insert safely under the
250 * write spinlock. Note that we cannot sleep inside the preload
253 if (radix_tree_preload(GFP_KERNEL)) {
259 * Because the inode hasn't been added to the radix-tree yet it can't
260 * be found by another thread, so we can do the non-sleeping lock here.
263 if (!xfs_ilock_nowait(ip, lock_flags))
267 mask = ~(((XFS_INODE_CLUSTER_SIZE(mp) >> mp->m_sb.sb_inodelog)) - 1);
268 first_index = agino & mask;
269 write_lock(&pag->pag_ici_lock);
271 /* insert the new inode */
272 error = radix_tree_insert(&pag->pag_ici_root, agino, ip);
273 if (unlikely(error)) {
274 WARN_ON(error != -EEXIST);
275 XFS_STATS_INC(xs_ig_dup);
277 goto out_preload_end;
280 /* These values _must_ be set before releasing the radix tree lock! */
281 ip->i_udquot = ip->i_gdquot = NULL;
282 xfs_iflags_set(ip, XFS_INEW);
284 write_unlock(&pag->pag_ici_lock);
285 radix_tree_preload_end();
290 write_unlock(&pag->pag_ici_lock);
291 radix_tree_preload_end();
293 xfs_iunlock(ip, lock_flags);
295 xfs_destroy_inode(ip);
300 * Look up an inode by number in the given file system.
301 * The inode is looked up in the cache held in each AG.
302 * If the inode is found in the cache, initialise the vfs inode
305 * If it is not in core, read it in from the file system's device,
306 * add it to the cache and initialise the vfs inode.
308 * The inode is locked according to the value of the lock_flags parameter.
309 * This flag parameter indicates how and if the inode's IO lock and inode lock
312 * mp -- the mount point structure for the current file system. It points
313 * to the inode hash table.
314 * tp -- a pointer to the current transaction if there is one. This is
315 * simply passed through to the xfs_iread() call.
316 * ino -- the number of the inode desired. This is the unique identifier
317 * within the file system for the inode being requested.
318 * lock_flags -- flags indicating how to lock the inode. See the comment
319 * for xfs_ilock() for a list of valid values.
320 * bno -- the block number starting the buffer containing the inode,
321 * if known (as by bulkstat), else 0.
338 /* the radix tree exists only in inode capable AGs */
339 if (XFS_INO_TO_AGNO(mp, ino) >= mp->m_maxagi)
342 /* get the perag structure and ensure that it's inode capable */
343 pag = xfs_get_perag(mp, ino);
344 if (!pag->pagi_inodeok)
346 ASSERT(pag->pag_ici_init);
347 agino = XFS_INO_TO_AGINO(mp, ino);
351 read_lock(&pag->pag_ici_lock);
352 ip = radix_tree_lookup(&pag->pag_ici_root, agino);
355 error = xfs_iget_cache_hit(pag, ip, flags, lock_flags);
357 goto out_error_or_again;
359 read_unlock(&pag->pag_ici_lock);
360 XFS_STATS_INC(xs_ig_missed);
362 error = xfs_iget_cache_miss(mp, pag, tp, ino, &ip, bno,
365 goto out_error_or_again;
367 xfs_put_perag(mp, pag);
371 ASSERT(ip->i_df.if_ext_max ==
372 XFS_IFORK_DSIZE(ip) / sizeof(xfs_bmbt_rec_t));
374 * If we have a real type for an on-disk inode, we can set ops(&unlock)
375 * now. If it's a new inode being created, xfs_ialloc will handle it.
377 if (xfs_iflags_test(ip, XFS_INEW) && ip->i_d.di_mode != 0)
382 if (error == EAGAIN) {
386 xfs_put_perag(mp, pag);
392 * Look for the inode corresponding to the given ino in the hash table.
393 * If it is there and its i_transp pointer matches tp, return it.
394 * Otherwise, return NULL.
397 xfs_inode_incore(xfs_mount_t *mp,
404 pag = xfs_get_perag(mp, ino);
405 read_lock(&pag->pag_ici_lock);
406 ip = radix_tree_lookup(&pag->pag_ici_root, XFS_INO_TO_AGINO(mp, ino));
407 read_unlock(&pag->pag_ici_lock);
408 xfs_put_perag(mp, pag);
410 /* the returned inode must match the transaction */
411 if (ip && (ip->i_transp != tp))
417 * Decrement reference count of an inode structure and unlock it.
419 * ip -- the inode being released
420 * lock_flags -- this parameter indicates the inode's locks to be
421 * to be released. See the comment on xfs_iunlock() for a list
425 xfs_iput(xfs_inode_t *ip,
428 xfs_itrace_entry(ip);
429 xfs_iunlock(ip, lock_flags);
434 * Special iput for brand-new inodes that are still locked
441 struct inode *inode = VFS_I(ip);
443 xfs_itrace_entry(ip);
445 if ((ip->i_d.di_mode == 0)) {
446 ASSERT(!xfs_iflags_test(ip, XFS_IRECLAIMABLE));
447 make_bad_inode(inode);
449 if (inode->i_state & I_NEW)
450 unlock_new_inode(inode);
452 xfs_iunlock(ip, lock_flags);
457 * This is called free all the memory associated with an inode.
458 * It must free the inode itself and any buffers allocated for
459 * if_extents/if_data and if_broot. It must also free the lock
460 * associated with the inode.
462 * Note: because we don't initialise everything on reallocation out
463 * of the zone, we must ensure we nullify everything correctly before
464 * freeing the structure.
468 struct xfs_inode *ip)
470 struct xfs_mount *mp = ip->i_mount;
471 struct xfs_perag *pag;
473 XFS_STATS_INC(xs_ig_reclaims);
476 * Remove the inode from the per-AG radix tree. It doesn't matter
477 * if it was never added to it because radix_tree_delete can deal
478 * with that case just fine.
480 pag = xfs_get_perag(mp, ip->i_ino);
481 write_lock(&pag->pag_ici_lock);
482 radix_tree_delete(&pag->pag_ici_root, XFS_INO_TO_AGINO(mp, ip->i_ino));
483 write_unlock(&pag->pag_ici_lock);
484 xfs_put_perag(mp, pag);
487 * Here we do an (almost) spurious inode lock in order to coordinate
488 * with inode cache radix tree lookups. This is because the lookup
489 * can reference the inodes in the cache without taking references.
491 * We make that OK here by ensuring that we wait until the inode is
492 * unlocked after the lookup before we go ahead and free it. We get
493 * both the ilock and the iolock because the code may need to drop the
494 * ilock one but will still hold the iolock.
496 xfs_ilock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
498 xfs_iunlock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
500 switch (ip->i_d.di_mode & S_IFMT) {
504 xfs_idestroy_fork(ip, XFS_DATA_FORK);
509 xfs_idestroy_fork(ip, XFS_ATTR_FORK);
511 #ifdef XFS_INODE_TRACE
512 ktrace_free(ip->i_trace);
514 #ifdef XFS_BMAP_TRACE
515 ktrace_free(ip->i_xtrace);
517 #ifdef XFS_BTREE_TRACE
518 ktrace_free(ip->i_btrace);
521 ktrace_free(ip->i_rwtrace);
523 #ifdef XFS_ILOCK_TRACE
524 ktrace_free(ip->i_lock_trace);
526 #ifdef XFS_DIR2_TRACE
527 ktrace_free(ip->i_dir_trace);
531 * Only if we are shutting down the fs will we see an
532 * inode still in the AIL. If it is there, we should remove
533 * it to prevent a use-after-free from occurring.
535 xfs_log_item_t *lip = &ip->i_itemp->ili_item;
536 struct xfs_ail *ailp = lip->li_ailp;
538 ASSERT(((lip->li_flags & XFS_LI_IN_AIL) == 0) ||
539 XFS_FORCED_SHUTDOWN(ip->i_mount));
540 if (lip->li_flags & XFS_LI_IN_AIL) {
541 spin_lock(&ailp->xa_lock);
542 if (lip->li_flags & XFS_LI_IN_AIL)
543 xfs_trans_ail_delete(ailp, lip);
545 spin_unlock(&ailp->xa_lock);
547 xfs_inode_item_destroy(ip);
550 /* asserts to verify all state is correct here */
551 ASSERT(atomic_read(&ip->i_iocount) == 0);
552 ASSERT(atomic_read(&ip->i_pincount) == 0);
553 ASSERT(!spin_is_locked(&ip->i_flags_lock));
554 ASSERT(completion_done(&ip->i_flush));
555 kmem_zone_free(xfs_inode_zone, ip);
559 * This is a wrapper routine around the xfs_ilock() routine
560 * used to centralize some grungy code. It is used in places
561 * that wish to lock the inode solely for reading the extents.
562 * The reason these places can't just call xfs_ilock(SHARED)
563 * is that the inode lock also guards to bringing in of the
564 * extents from disk for a file in b-tree format. If the inode
565 * is in b-tree format, then we need to lock the inode exclusively
566 * until the extents are read in. Locking it exclusively all
567 * the time would limit our parallelism unnecessarily, though.
568 * What we do instead is check to see if the extents have been
569 * read in yet, and only lock the inode exclusively if they
572 * The function returns a value which should be given to the
573 * corresponding xfs_iunlock_map_shared(). This value is
574 * the mode in which the lock was actually taken.
577 xfs_ilock_map_shared(
582 if ((ip->i_d.di_format == XFS_DINODE_FMT_BTREE) &&
583 ((ip->i_df.if_flags & XFS_IFEXTENTS) == 0)) {
584 lock_mode = XFS_ILOCK_EXCL;
586 lock_mode = XFS_ILOCK_SHARED;
589 xfs_ilock(ip, lock_mode);
595 * This is simply the unlock routine to go with xfs_ilock_map_shared().
596 * All it does is call xfs_iunlock() with the given lock_mode.
599 xfs_iunlock_map_shared(
601 unsigned int lock_mode)
603 xfs_iunlock(ip, lock_mode);
607 * The xfs inode contains 2 locks: a multi-reader lock called the
608 * i_iolock and a multi-reader lock called the i_lock. This routine
609 * allows either or both of the locks to be obtained.
611 * The 2 locks should always be ordered so that the IO lock is
612 * obtained first in order to prevent deadlock.
614 * ip -- the inode being locked
615 * lock_flags -- this parameter indicates the inode's locks
616 * to be locked. It can be:
621 * XFS_IOLOCK_SHARED | XFS_ILOCK_SHARED,
622 * XFS_IOLOCK_SHARED | XFS_ILOCK_EXCL,
623 * XFS_IOLOCK_EXCL | XFS_ILOCK_SHARED,
624 * XFS_IOLOCK_EXCL | XFS_ILOCK_EXCL
632 * You can't set both SHARED and EXCL for the same lock,
633 * and only XFS_IOLOCK_SHARED, XFS_IOLOCK_EXCL, XFS_ILOCK_SHARED,
634 * and XFS_ILOCK_EXCL are valid values to set in lock_flags.
636 ASSERT((lock_flags & (XFS_IOLOCK_SHARED | XFS_IOLOCK_EXCL)) !=
637 (XFS_IOLOCK_SHARED | XFS_IOLOCK_EXCL));
638 ASSERT((lock_flags & (XFS_ILOCK_SHARED | XFS_ILOCK_EXCL)) !=
639 (XFS_ILOCK_SHARED | XFS_ILOCK_EXCL));
640 ASSERT((lock_flags & ~(XFS_LOCK_MASK | XFS_LOCK_DEP_MASK)) == 0);
642 if (lock_flags & XFS_IOLOCK_EXCL)
643 mrupdate_nested(&ip->i_iolock, XFS_IOLOCK_DEP(lock_flags));
644 else if (lock_flags & XFS_IOLOCK_SHARED)
645 mraccess_nested(&ip->i_iolock, XFS_IOLOCK_DEP(lock_flags));
647 if (lock_flags & XFS_ILOCK_EXCL)
648 mrupdate_nested(&ip->i_lock, XFS_ILOCK_DEP(lock_flags));
649 else if (lock_flags & XFS_ILOCK_SHARED)
650 mraccess_nested(&ip->i_lock, XFS_ILOCK_DEP(lock_flags));
652 xfs_ilock_trace(ip, 1, lock_flags, (inst_t *)__return_address);
656 * This is just like xfs_ilock(), except that the caller
657 * is guaranteed not to sleep. It returns 1 if it gets
658 * the requested locks and 0 otherwise. If the IO lock is
659 * obtained but the inode lock cannot be, then the IO lock
660 * is dropped before returning.
662 * ip -- the inode being locked
663 * lock_flags -- this parameter indicates the inode's locks to be
664 * to be locked. See the comment for xfs_ilock() for a list
673 * You can't set both SHARED and EXCL for the same lock,
674 * and only XFS_IOLOCK_SHARED, XFS_IOLOCK_EXCL, XFS_ILOCK_SHARED,
675 * and XFS_ILOCK_EXCL are valid values to set in lock_flags.
677 ASSERT((lock_flags & (XFS_IOLOCK_SHARED | XFS_IOLOCK_EXCL)) !=
678 (XFS_IOLOCK_SHARED | XFS_IOLOCK_EXCL));
679 ASSERT((lock_flags & (XFS_ILOCK_SHARED | XFS_ILOCK_EXCL)) !=
680 (XFS_ILOCK_SHARED | XFS_ILOCK_EXCL));
681 ASSERT((lock_flags & ~(XFS_LOCK_MASK | XFS_LOCK_DEP_MASK)) == 0);
683 if (lock_flags & XFS_IOLOCK_EXCL) {
684 if (!mrtryupdate(&ip->i_iolock))
686 } else if (lock_flags & XFS_IOLOCK_SHARED) {
687 if (!mrtryaccess(&ip->i_iolock))
690 if (lock_flags & XFS_ILOCK_EXCL) {
691 if (!mrtryupdate(&ip->i_lock))
692 goto out_undo_iolock;
693 } else if (lock_flags & XFS_ILOCK_SHARED) {
694 if (!mrtryaccess(&ip->i_lock))
695 goto out_undo_iolock;
697 xfs_ilock_trace(ip, 2, lock_flags, (inst_t *)__return_address);
701 if (lock_flags & XFS_IOLOCK_EXCL)
702 mrunlock_excl(&ip->i_iolock);
703 else if (lock_flags & XFS_IOLOCK_SHARED)
704 mrunlock_shared(&ip->i_iolock);
710 * xfs_iunlock() is used to drop the inode locks acquired with
711 * xfs_ilock() and xfs_ilock_nowait(). The caller must pass
712 * in the flags given to xfs_ilock() or xfs_ilock_nowait() so
713 * that we know which locks to drop.
715 * ip -- the inode being unlocked
716 * lock_flags -- this parameter indicates the inode's locks to be
717 * to be unlocked. See the comment for xfs_ilock() for a list
718 * of valid values for this parameter.
727 * You can't set both SHARED and EXCL for the same lock,
728 * and only XFS_IOLOCK_SHARED, XFS_IOLOCK_EXCL, XFS_ILOCK_SHARED,
729 * and XFS_ILOCK_EXCL are valid values to set in lock_flags.
731 ASSERT((lock_flags & (XFS_IOLOCK_SHARED | XFS_IOLOCK_EXCL)) !=
732 (XFS_IOLOCK_SHARED | XFS_IOLOCK_EXCL));
733 ASSERT((lock_flags & (XFS_ILOCK_SHARED | XFS_ILOCK_EXCL)) !=
734 (XFS_ILOCK_SHARED | XFS_ILOCK_EXCL));
735 ASSERT((lock_flags & ~(XFS_LOCK_MASK | XFS_IUNLOCK_NONOTIFY |
736 XFS_LOCK_DEP_MASK)) == 0);
737 ASSERT(lock_flags != 0);
739 if (lock_flags & XFS_IOLOCK_EXCL)
740 mrunlock_excl(&ip->i_iolock);
741 else if (lock_flags & XFS_IOLOCK_SHARED)
742 mrunlock_shared(&ip->i_iolock);
744 if (lock_flags & XFS_ILOCK_EXCL)
745 mrunlock_excl(&ip->i_lock);
746 else if (lock_flags & XFS_ILOCK_SHARED)
747 mrunlock_shared(&ip->i_lock);
749 if ((lock_flags & (XFS_ILOCK_SHARED | XFS_ILOCK_EXCL)) &&
750 !(lock_flags & XFS_IUNLOCK_NONOTIFY) && ip->i_itemp) {
752 * Let the AIL know that this item has been unlocked in case
753 * it is in the AIL and anyone is waiting on it. Don't do
754 * this if the caller has asked us not to.
756 xfs_trans_unlocked_item(ip->i_itemp->ili_item.li_ailp,
757 (xfs_log_item_t*)(ip->i_itemp));
759 xfs_ilock_trace(ip, 3, lock_flags, (inst_t *)__return_address);
763 * give up write locks. the i/o lock cannot be held nested
764 * if it is being demoted.
771 ASSERT(lock_flags & (XFS_IOLOCK_EXCL|XFS_ILOCK_EXCL));
772 ASSERT((lock_flags & ~(XFS_IOLOCK_EXCL|XFS_ILOCK_EXCL)) == 0);
774 if (lock_flags & XFS_ILOCK_EXCL)
775 mrdemote(&ip->i_lock);
776 if (lock_flags & XFS_IOLOCK_EXCL)
777 mrdemote(&ip->i_iolock);
782 * Debug-only routine, without additional rw_semaphore APIs, we can
783 * now only answer requests regarding whether we hold the lock for write
784 * (reader state is outside our visibility, we only track writer state).
786 * Note: this means !xfs_isilocked would give false positives, so don't do that.
793 if ((lock_flags & (XFS_ILOCK_EXCL|XFS_ILOCK_SHARED)) ==
795 if (!ip->i_lock.mr_writer)
799 if ((lock_flags & (XFS_IOLOCK_EXCL|XFS_IOLOCK_SHARED)) ==
801 if (!ip->i_iolock.mr_writer)
809 #ifdef XFS_INODE_TRACE
811 #define KTRACE_ENTER(ip, vk, s, line, ra) \
812 ktrace_enter((ip)->i_trace, \
813 /* 0 */ (void *)(__psint_t)(vk), \
814 /* 1 */ (void *)(s), \
815 /* 2 */ (void *)(__psint_t) line, \
816 /* 3 */ (void *)(__psint_t)atomic_read(&VFS_I(ip)->i_count), \
817 /* 4 */ (void *)(ra), \
819 /* 6 */ (void *)(__psint_t)current_cpu(), \
820 /* 7 */ (void *)(__psint_t)current_pid(), \
821 /* 8 */ (void *)__return_address, \
822 /* 9 */ NULL, NULL, NULL, NULL, NULL, NULL, NULL)
825 * Vnode tracing code.
828 _xfs_itrace_entry(xfs_inode_t *ip, const char *func, inst_t *ra)
830 KTRACE_ENTER(ip, INODE_KTRACE_ENTRY, func, 0, ra);
834 _xfs_itrace_exit(xfs_inode_t *ip, const char *func, inst_t *ra)
836 KTRACE_ENTER(ip, INODE_KTRACE_EXIT, func, 0, ra);
840 xfs_itrace_hold(xfs_inode_t *ip, char *file, int line, inst_t *ra)
842 KTRACE_ENTER(ip, INODE_KTRACE_HOLD, file, line, ra);
846 _xfs_itrace_ref(xfs_inode_t *ip, char *file, int line, inst_t *ra)
848 KTRACE_ENTER(ip, INODE_KTRACE_REF, file, line, ra);
852 xfs_itrace_rele(xfs_inode_t *ip, char *file, int line, inst_t *ra)
854 KTRACE_ENTER(ip, INODE_KTRACE_RELE, file, line, ra);
856 #endif /* XFS_INODE_TRACE */