diff options
| author | Felix Blyakher | 2009-06-01 13:13:24 -0500 |
|---|---|---|
| committer | Felix Blyakher | 2009-06-01 13:13:24 -0500 |
| commit | 4156e735d3abde8e9243b5d22f7999dd3fffab2e (patch) | |
| tree | d69552f9eafbe62715366d7c9617259e7eeff672 | |
| parent | 096324873f9c7172a17aff9db1356f4f01b77afe (diff) | |
xfs: prevent deadlock in xfs_qm_shake()
It's possible to recurse into filesystem from the memory
allocation, which deadlocks in xfs_qm_shake(). Add check
for __GFP_FS, and bail out if it is not set.
Signed-off-by: Felix Blyakher <felixb@sgi.com>
Signed-off-by: Hedi Berriche <hedi@sgi.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Felix Blyakher <felixb@sgi.com>
| -rw-r--r-- | fs/xfs/linux-2.6/kmem.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/xfs/linux-2.6/kmem.h b/fs/xfs/linux-2.6/kmem.h index af6843c7ee4b..179cbd630f69 100644 --- a/fs/xfs/linux-2.6/kmem.h +++ b/fs/xfs/linux-2.6/kmem.h @@ -103,7 +103,7 @@ extern void *kmem_zone_zalloc(kmem_zone_t *, unsigned int __nocast); static inline int kmem_shake_allow(gfp_t gfp_mask) { - return (gfp_mask & __GFP_WAIT) != 0; + return ((gfp_mask & __GFP_WAIT) && (gfp_mask & __GFP_FS)); } #endif /* __XFS_SUPPORT_KMEM_H__ */ |