Commit 9a3c531d authored Mar 21, 2012 by Andi Kleen Committed by Linus Torvalds Mar 21, 2012

mm: update stale lock ordering comment for memory-failure.c



When i_mmap_lock changed to a mutex the locking order in memory failure
was changed to take the sleeping lock first.  But the big fat mm lock
ordering comment (BFMLO) wasn't updated.  Do this here.

Pointed out by Andrew.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 47a13333

mm/filemap.c

+2 −3

Original line number	Diff line number	Diff line
		@@ -101,9 +101,8 @@
		* ->inode->i_lock (zap_pte_range->set_page_dirty)
		* ->private_lock (zap_pte_range->__set_page_dirty_buffers)
		*
		* (code doesn't rely on that order, so you could switch it around)
		* ->tasklist_lock (memory_failure, collect_procs_ao)
		* ->i_mmap_mutex
		* ->tasklist_lock (memory_failure, collect_procs_ao)
		*/

		/*