tree b9e77d2798eac9051353b29f22e9315d9d9e13b5
parent b2b6ebf5f740e015b2155343958f067e594323ea
author Jan Kara <jack@suse.cz> 1282652883 +0200
committer Tao Ma <tao.ma@oracle.com> 1283927157 +0800

ocfs2: Fix deadlock when allocating page

We cannot call grab_cache_page() when holding filesystem locks or with
a transaction started as grab_cache_page() calls page allocation with
GFP_KERNEL flag and thus page reclaim can recurse back into the filesystem
causing deadlocks or various assertion failures. We have to use
find_or_create_page() instead and pass it GFP_NOFS as we do with other
allocations.

Acked-by: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Tao Ma <tao.ma@oracle.com>