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| author | Christoph Hellwig <hch@lst.de> | 2011-07-08 14:34:42 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2011-07-08 14:34:42 +0200 |
| commit | 7a249cf83da1813cfa71cfe1e265b40045eceb47 (patch) | |
| tree | 0c665aad7d32614f7eaa5a11c1b534c8fb5037d3 /fs/xfs/xfs_iomap.c | |
| parent | xfs: improve sync behaviour in the face of aggressive dirtying (diff) | |
| download | linux-7a249cf83da1813cfa71cfe1e265b40045eceb47.tar.xz linux-7a249cf83da1813cfa71cfe1e265b40045eceb47.zip | |
xfs: fix filesystsem freeze race in xfs_trans_alloc
As pointed out by Jan xfs_trans_alloc can race with a concurrent filesystem
freeze when it sleeps during the memory allocation. Fix this by moving the
wait_for_freeze call after the memory allocation. This means moving the
freeze into the low-level _xfs_trans_alloc helper, which thus grows a new
argument. Also fix up some comments in that area while at it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
Reviewed-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_iomap.c')
| -rw-r--r-- | fs/xfs/xfs_iomap.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index 091d82b94c4d..982b71108f33 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -688,8 +688,7 @@ xfs_iomap_write_unwritten( * the same inode that we complete here and might deadlock * on the iolock. */ - xfs_wait_for_freeze(mp, SB_FREEZE_TRANS); - tp = _xfs_trans_alloc(mp, XFS_TRANS_STRAT_WRITE, KM_NOFS); + tp = _xfs_trans_alloc(mp, XFS_TRANS_STRAT_WRITE, KM_NOFS, true); tp->t_flags |= XFS_TRANS_RESERVE; error = xfs_trans_reserve(tp, resblks, XFS_WRITE_LOG_RES(mp), 0, |