Attached patch exposes reiserfs_sync_fs().  This call is needed by the new
quota code to write data to disk on quotaoff so that userspace can see them
afterwards.  Chris Mason agrees with the patch.

Make reiserfs provide the sync_fs() function so that the quota code
has a way to reliably force a transaction to disk.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>