| commit | 9b4c0ff32ccd87ab52d4c5bd0a0536febce11370 | |
| author | Jan Kara <jack@suse.cz> | |
| Tue, 24 Aug 2010 12:28:03 +0000 (24 14:28 +0200) | ||
| committer | Tao Ma <tao.ma@oracle.com> | |
| Wed, 8 Sep 2010 06:25:57 +0000 (8 14:25 +0800) | ||
| tree | b9e77d2798eac9051353b29f22e9315d9d9e13b5 | treesnapshot (tar.gz zip) |
| parent | b2b6ebf5f740e015b2155343958f067e594323ea | commitdiff |
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>
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>
| fs/ocfs2/alloc.c | diffblobblamehistory | |
| fs/ocfs2/file.c | diffblobblamehistory | |
| fs/ocfs2/refcounttree.c | diffblobblamehistory |