Commit f64ae042 authored Nov 11, 2011 by Shaohua Li Committed by Pekka Enberg Nov 15, 2011

slub: use correct parameter to add a page to partial list tail



unfreeze_partials() needs add the page to partial list tail, since such page
hasn't too many free objects. We now explictly use DEACTIVATE_TO_TAIL for this,
while DEACTIVATE_TO_TAIL != 1. This will cause performance regression (eg, more
lock contention in node->list_lock) without below fix.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Acked-by: Christoph Lameter <cl@linux.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

parent 1ea6b8f4

mm/slub.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -1904,7 +1904,8 @@ static void unfreeze_partials(struct kmem_cache *s)
		if (l == M_PARTIAL)
		remove_partial(n, page);
		else
		add_partial(n, page, 1);
		add_partial(n, page,
		DEACTIVATE_TO_TAIL);

		l = m;
		}