tree 7b97858fa33169a1616cc6f1e05b66117e97c1b3
parent bb49b32fece7910fbb02a6934bca4495596f6c8c
author Jan Kara <jack@suse.cz> 1179378679 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1179404585 -0700

circular locking dependency found in QUOTA OFF

i_mutex on quota files is special.  Unlike i_mutexes for other inodes it is
acquired under dqonoff_mutex.  Tell lockdep about this lock ranking.  Also
comment and code in quota_sync_sb() seem to be bogus (as i_mutex for quota
file can be acquired under dqonoff_mutex).  Move truncate_inode_pages()
call under dqonoff_mutex and save some problems with races...

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>