tree 143e5bdbd10d32832fce9183500deebad6c6e4db
parent 6966a97753854c8b5336cf3997d5d1d205d91b12
author David Rientjes <rientjes@google.com> 1202544615 -0800
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1202584113 -0800

memcontrol: add vm_match_cgroup()

mm_cgroup() is exclusively used to test whether an mm's mem_cgroup pointer
is pointing to a specific cgroup.  Instead of returning the pointer, we can
just do the test itself in a new macro:

	vm_match_cgroup(mm, cgroup)

returns non-zero if the mm's mem_cgroup points to cgroup.  Otherwise it
returns zero.

Signed-off-by: David Rientjes <rientjes@google.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>