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| author | Christoph Hellwig <hch@infradead.org> | 2009-10-19 08:03:46 +0400 |
|---|---|---|
| committer | Alex Elder <aelder@sgi.com> | 2009-12-12 00:11:19 +0300 |
| commit | c56c9631cbe88f08854a56ff9776c1f310916830 (patch) | |
| tree | 9069de0b572857072bc99334b8d5e1bce14ef13f /fs/xfs/xfs_rw.h | |
| parent | 848ce8f731aed0a2d4ab5884a4f6664af73d2dd0 (diff) | |
| download | linux-c56c9631cbe88f08854a56ff9776c1f310916830.tar.xz | |
xfs: fix mmap_sem/iolock inversion in xfs_free_eofblocks
When xfs_free_eofblocks is called from ->release the VM might already
hold the mmap_sem, but in the write path we take the iolock before
taking the mmap_sem in the generic write code.
Switch xfs_free_eofblocks to only trylock the iolock if called from
->release and skip trimming the prellocated blocks in that case.
We'll still free them later on the final iput.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
Signed-off-by: Alex Elder <aelder@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_rw.h')
| -rw-r--r-- | fs/xfs/xfs_rw.h | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/fs/xfs/xfs_rw.h b/fs/xfs/xfs_rw.h index f5e4874c37d8..726014d1c925 100644 --- a/fs/xfs/xfs_rw.h +++ b/fs/xfs/xfs_rw.h @@ -37,13 +37,6 @@ xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb) } /* - * Flags for xfs_free_eofblocks - */ -#define XFS_FREE_EOF_LOCK (1<<0) -#define XFS_FREE_EOF_NOLOCK (1<<1) - - -/* * helper function to extract extent size hint from inode */ STATIC_INLINE xfs_extlen_t |