Re: [patch 10/11] mm: memcg: only check swap cache pages for repeated charging
From: Kamezawa Hiroyuki <hidden>
Date: 2012-07-09 03:29:06
Also in:
linux-mm, lkml
(2012/07/05 9:45), Johannes Weiner wrote:
Only anon and shmem pages in the swap cache are attempted to be charged multiple times, from every swap pte fault or from shmem_unuse(). No other pages require checking PageCgroupUsed(). Charging pages in the swap cache is also serialized by the page lock, and since both the try_charge and commit_charge are called under the same page lock section, the PageCgroupUsed() check might as well happen before the counter charging, let alone reclaim. Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
You're right. This is SwapCache handling is done by commit d13d144309d... I should notice this.... Thank you very much ! Acked-by: KAMEZAWA Hiroyuki <redacted> -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>