xfs: prevent deadlock in xfs_qm_shake()
authorFelix Blyakher <felixb@sgi.com>
Mon, 1 Jun 2009 18:13:24 +0000 (13:13 -0500)
committerFelix Blyakher <felixb@sgi.com>
Tue, 2 Jun 2009 03:59:45 +0000 (22:59 -0500)
commit1b17d766463d51904cb242f194a780737e5f73ef
tree25d43875b8c539d080141479a0695ab1ff24965c
parente6da7c9fed111ba1243297ee6eda8e24ae11c384
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>
fs/xfs/linux-2.6/kmem.h