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| author | Alex Elder <aelder@sgi.com> | 2011-07-11 16:51:44 +0200 |
|---|---|---|
| committer | Alex Elder <aelder@sgi.com> | 2011-07-11 17:21:03 +0200 |
| commit | b2ce39740066604288876c752d8170b3b17a21aa (patch) | |
| tree | fd51670cea52d4c4421ce98a65e8b4979535fb97 /fs/xfs/xfs_trans.h | |
| parent | xfs: remove variables that serve no purpose in xfs_alloc_ag_vextent_exact() (diff) | |
| download | linux-b2ce39740066604288876c752d8170b3b17a21aa.tar.xz linux-b2ce39740066604288876c752d8170b3b17a21aa.zip | |
Revert "xfs: fix filesystsem freeze race in xfs_trans_alloc"
This reverts commit 7a249cf83da1813cfa71cfe1e265b40045eceb47.
That commit created a situation that could lead to a filesystem
hang. As Dave Chinner pointed out, xfs_trans_alloc() could hold a
reference to m_active_trans (i.e., keep it non-zero) and then wait
for SB_FREEZE_TRANS to complete. Meanwhile a filesystem freeze
request could set SB_FREEZE_TRANS and then wait for m_active_trans
to drop to zero. Nobody benefits from this sequence of events...
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>
Diffstat (limited to '')
| -rw-r--r-- | fs/xfs/xfs_trans.h | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h index 4e78432ce143..06a9759b6352 100644 --- a/fs/xfs/xfs_trans.h +++ b/fs/xfs/xfs_trans.h @@ -447,14 +447,8 @@ typedef struct xfs_trans { /* * XFS transaction mechanism exported interfaces. */ -xfs_trans_t *_xfs_trans_alloc(struct xfs_mount *, uint, uint, bool); - -static inline struct xfs_trans * -xfs_trans_alloc(struct xfs_mount *mp, uint type) -{ - return _xfs_trans_alloc(mp, type, KM_SLEEP, true); -} - +xfs_trans_t *xfs_trans_alloc(struct xfs_mount *, uint); +xfs_trans_t *_xfs_trans_alloc(struct xfs_mount *, uint, uint); xfs_trans_t *xfs_trans_dup(xfs_trans_t *); int xfs_trans_reserve(xfs_trans_t *, uint, uint, uint, uint, uint); |