tree e62253cc40f36bfa631f0dd316a16ac987d11dd4
parent 438697064aaa2f64e0fcc6586582a3e7ec36005b
author Dave Chinner <dchinner@redhat.com> 1279612439 +1000
committer Alex Elder <aelder@sgi.com> 1280168209 -0500

xfs: fix memory reclaim recursion deadlock on locked inode buffer

Calling into memory reclaim with a locked inode buffer can deadlock
if memory reclaim tries to lock the inode buffer during inode
teardown. Convert the relevant memory allocations to use KM_NOFS to
avoid this deadlock condition.

Reported-by: Peter Watkins <treestem@gmail.com>
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Alex Elder <aelder@sgi.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>