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path: root/fs/xfs/xfs_iget.c
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Diffstat (limited to 'fs/xfs/xfs_iget.c')
-rw-r--r--fs/xfs/xfs_iget.c160
1 files changed, 45 insertions, 115 deletions
diff --git a/fs/xfs/xfs_iget.c b/fs/xfs/xfs_iget.c
index 80e526489be5..6845db90818f 100644
--- a/fs/xfs/xfs_iget.c
+++ b/fs/xfs/xfs_iget.c
@@ -43,7 +43,7 @@
#include "xfs_inode_item.h"
#include "xfs_bmap.h"
#include "xfs_btree_trace.h"
-#include "xfs_dir2_trace.h"
+#include "xfs_trace.h"
/*
@@ -74,6 +74,8 @@ xfs_inode_alloc(
ASSERT(!spin_is_locked(&ip->i_flags_lock));
ASSERT(completion_done(&ip->i_flush));
+ mrlock_init(&ip->i_iolock, MRLOCK_BARRIER, "xfsio", ip->i_ino);
+
/* initialise the xfs inode */
ip->i_ino = ino;
ip->i_mount = mp;
@@ -87,30 +89,8 @@ xfs_inode_alloc(
ip->i_size = 0;
ip->i_new_size = 0;
- /*
- * Initialize inode's trace buffers.
- */
-#ifdef XFS_INODE_TRACE
- ip->i_trace = ktrace_alloc(INODE_TRACE_SIZE, KM_NOFS);
-#endif
-#ifdef XFS_BMAP_TRACE
- ip->i_xtrace = ktrace_alloc(XFS_BMAP_KTRACE_SIZE, KM_NOFS);
-#endif
-#ifdef XFS_BTREE_TRACE
- ip->i_btrace = ktrace_alloc(XFS_BMBT_KTRACE_SIZE, KM_NOFS);
-#endif
-#ifdef XFS_RW_TRACE
- ip->i_rwtrace = ktrace_alloc(XFS_RW_KTRACE_SIZE, KM_NOFS);
-#endif
-#ifdef XFS_ILOCK_TRACE
- ip->i_lock_trace = ktrace_alloc(XFS_ILOCK_KTRACE_SIZE, KM_NOFS);
-#endif
-#ifdef XFS_DIR2_TRACE
- ip->i_dir_trace = ktrace_alloc(XFS_DIR2_KTRACE_SIZE, KM_NOFS);
-#endif
-
/* prevent anyone from using this yet */
- VFS_I(ip)->i_state = I_NEW|I_LOCK;
+ VFS_I(ip)->i_state = I_NEW;
return ip;
}
@@ -130,25 +110,6 @@ xfs_inode_free(
if (ip->i_afp)
xfs_idestroy_fork(ip, XFS_ATTR_FORK);
-#ifdef XFS_INODE_TRACE
- ktrace_free(ip->i_trace);
-#endif
-#ifdef XFS_BMAP_TRACE
- ktrace_free(ip->i_xtrace);
-#endif
-#ifdef XFS_BTREE_TRACE
- ktrace_free(ip->i_btrace);
-#endif
-#ifdef XFS_RW_TRACE
- ktrace_free(ip->i_rwtrace);
-#endif
-#ifdef XFS_ILOCK_TRACE
- ktrace_free(ip->i_lock_trace);
-#endif
-#ifdef XFS_DIR2_TRACE
- ktrace_free(ip->i_dir_trace);
-#endif
-
if (ip->i_itemp) {
/*
* Only if we are shutting down the fs will we see an
@@ -207,6 +168,7 @@ xfs_iget_cache_hit(
* instead of polling for it.
*/
if (ip->i_flags & (XFS_INEW|XFS_IRECLAIM)) {
+ trace_xfs_iget_skip(ip);
XFS_STATS_INC(xs_ig_frecycle);
error = EAGAIN;
goto out_error;
@@ -225,16 +187,15 @@ xfs_iget_cache_hit(
* Need to carefully get it back into useable state.
*/
if (ip->i_flags & XFS_IRECLAIMABLE) {
- xfs_itrace_exit_tag(ip, "xfs_iget.alloc");
+ trace_xfs_iget_reclaim(ip);
/*
- * We need to set XFS_INEW atomically with clearing the
- * reclaimable tag so that we do have an indicator of the
- * inode still being initialized.
+ * We need to set XFS_IRECLAIM to prevent xfs_reclaim_inode
+ * from stomping over us while we recycle the inode. We can't
+ * clear the radix tree reclaimable tag yet as it requires
+ * pag_ici_lock to be held exclusive.
*/
- ip->i_flags |= XFS_INEW;
- ip->i_flags &= ~XFS_IRECLAIMABLE;
- __xfs_inode_clear_reclaim_tag(mp, pag, ip);
+ ip->i_flags |= XFS_IRECLAIM;
spin_unlock(&ip->i_flags_lock);
read_unlock(&pag->pag_ici_lock);
@@ -251,9 +212,18 @@ xfs_iget_cache_hit(
ip->i_flags &= ~XFS_INEW;
ip->i_flags |= XFS_IRECLAIMABLE;
__xfs_inode_set_reclaim_tag(pag, ip);
+ trace_xfs_iget_reclaim(ip);
goto out_error;
}
- inode->i_state = I_LOCK|I_NEW;
+
+ write_lock(&pag->pag_ici_lock);
+ spin_lock(&ip->i_flags_lock);
+ ip->i_flags &= ~(XFS_IRECLAIMABLE | XFS_IRECLAIM);
+ ip->i_flags |= XFS_INEW;
+ __xfs_inode_clear_reclaim_tag(mp, pag, ip);
+ inode->i_state = I_NEW;
+ spin_unlock(&ip->i_flags_lock);
+ write_unlock(&pag->pag_ici_lock);
} else {
/* If the VFS inode is being torn down, pause and try again. */
if (!igrab(inode)) {
@@ -270,8 +240,9 @@ xfs_iget_cache_hit(
xfs_ilock(ip, lock_flags);
xfs_iflags_clear(ip, XFS_ISTALE);
- xfs_itrace_exit_tag(ip, "xfs_iget.found");
XFS_STATS_INC(xs_ig_found);
+
+ trace_xfs_iget_found(ip);
return 0;
out_error:
@@ -290,7 +261,7 @@ xfs_iget_cache_miss(
struct xfs_inode **ipp,
xfs_daddr_t bno,
int flags,
- int lock_flags) __releases(pag->pag_ici_lock)
+ int lock_flags)
{
struct xfs_inode *ip;
int error;
@@ -305,7 +276,7 @@ xfs_iget_cache_miss(
if (error)
goto out_destroy;
- xfs_itrace_exit_tag(ip, "xfs_iget.alloc");
+ xfs_itrace_entry(ip);
if ((ip->i_d.di_mode == 0) && !(flags & XFS_IGET_CREATE)) {
error = ENOENT;
@@ -350,6 +321,8 @@ xfs_iget_cache_miss(
write_unlock(&pag->pag_ici_lock);
radix_tree_preload_end();
+
+ trace_xfs_iget_alloc(ip);
*ipp = ip;
return 0;
@@ -408,7 +381,7 @@ xfs_iget(
return EINVAL;
/* get the perag structure and ensure that it's inode capable */
- pag = xfs_get_perag(mp, ino);
+ pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ino));
if (!pag->pagi_inodeok)
return EINVAL;
ASSERT(pag->pag_ici_init);
@@ -432,7 +405,7 @@ again:
if (error)
goto out_error_or_again;
}
- xfs_put_perag(mp, pag);
+ xfs_perag_put(pag);
*ipp = ip;
@@ -451,7 +424,7 @@ out_error_or_again:
delay(1);
goto again;
}
- xfs_put_perag(mp, pag);
+ xfs_perag_put(pag);
return error;
}
@@ -511,19 +484,23 @@ xfs_ireclaim(
{
struct xfs_mount *mp = ip->i_mount;
struct xfs_perag *pag;
+ xfs_agino_t agino = XFS_INO_TO_AGINO(mp, ip->i_ino);
XFS_STATS_INC(xs_ig_reclaims);
/*
- * Remove the inode from the per-AG radix tree. It doesn't matter
- * if it was never added to it because radix_tree_delete can deal
- * with that case just fine.
+ * Remove the inode from the per-AG radix tree.
+ *
+ * Because radix_tree_delete won't complain even if the item was never
+ * added to the tree assert that it's been there before to catch
+ * problems with the inode life time early on.
*/
- pag = xfs_get_perag(mp, ip->i_ino);
+ pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ip->i_ino));
write_lock(&pag->pag_ici_lock);
- radix_tree_delete(&pag->pag_ici_root, XFS_INO_TO_AGINO(mp, ip->i_ino));
+ if (!radix_tree_delete(&pag->pag_ici_root, agino))
+ ASSERT(0);
write_unlock(&pag->pag_ici_lock);
- xfs_put_perag(mp, pag);
+ xfs_perag_put(pag);
/*
* Here we do an (almost) spurious inode lock in order to coordinate
@@ -636,7 +613,7 @@ xfs_ilock(
else if (lock_flags & XFS_ILOCK_SHARED)
mraccess_nested(&ip->i_lock, XFS_ILOCK_DEP(lock_flags));
- xfs_ilock_trace(ip, 1, lock_flags, (inst_t *)__return_address);
+ trace_xfs_ilock(ip, lock_flags, _RET_IP_);
}
/*
@@ -681,7 +658,7 @@ xfs_ilock_nowait(
if (!mrtryaccess(&ip->i_lock))
goto out_undo_iolock;
}
- xfs_ilock_trace(ip, 2, lock_flags, (inst_t *)__return_address);
+ trace_xfs_ilock_nowait(ip, lock_flags, _RET_IP_);
return 1;
out_undo_iolock:
@@ -743,7 +720,7 @@ xfs_iunlock(
xfs_trans_unlocked_item(ip->i_itemp->ili_item.li_ailp,
(xfs_log_item_t*)(ip->i_itemp));
}
- xfs_ilock_trace(ip, 3, lock_flags, (inst_t *)__return_address);
+ trace_xfs_iunlock(ip, lock_flags, _RET_IP_);
}
/*
@@ -762,6 +739,8 @@ xfs_ilock_demote(
mrdemote(&ip->i_lock);
if (lock_flags & XFS_IOLOCK_EXCL)
mrdemote(&ip->i_iolock);
+
+ trace_xfs_ilock_demote(ip, lock_flags, _RET_IP_);
}
#ifdef DEBUG
@@ -792,52 +771,3 @@ xfs_isilocked(
return 1;
}
#endif
-
-#ifdef XFS_INODE_TRACE
-
-#define KTRACE_ENTER(ip, vk, s, line, ra) \
- ktrace_enter((ip)->i_trace, \
-/* 0 */ (void *)(__psint_t)(vk), \
-/* 1 */ (void *)(s), \
-/* 2 */ (void *)(__psint_t) line, \
-/* 3 */ (void *)(__psint_t)atomic_read(&VFS_I(ip)->i_count), \
-/* 4 */ (void *)(ra), \
-/* 5 */ NULL, \
-/* 6 */ (void *)(__psint_t)current_cpu(), \
-/* 7 */ (void *)(__psint_t)current_pid(), \
-/* 8 */ (void *)__return_address, \
-/* 9 */ NULL, NULL, NULL, NULL, NULL, NULL, NULL)
-
-/*
- * Vnode tracing code.
- */
-void
-_xfs_itrace_entry(xfs_inode_t *ip, const char *func, inst_t *ra)
-{
- KTRACE_ENTER(ip, INODE_KTRACE_ENTRY, func, 0, ra);
-}
-
-void
-_xfs_itrace_exit(xfs_inode_t *ip, const char *func, inst_t *ra)
-{
- KTRACE_ENTER(ip, INODE_KTRACE_EXIT, func, 0, ra);
-}
-
-void
-xfs_itrace_hold(xfs_inode_t *ip, char *file, int line, inst_t *ra)
-{
- KTRACE_ENTER(ip, INODE_KTRACE_HOLD, file, line, ra);
-}
-
-void
-_xfs_itrace_ref(xfs_inode_t *ip, char *file, int line, inst_t *ra)
-{
- KTRACE_ENTER(ip, INODE_KTRACE_REF, file, line, ra);
-}
-
-void
-xfs_itrace_rele(xfs_inode_t *ip, char *file, int line, inst_t *ra)
-{
- KTRACE_ENTER(ip, INODE_KTRACE_RELE, file, line, ra);
-}
-#endif /* XFS_INODE_TRACE */
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-26 22:05:33 +0300