On Mon, Jan 23, 2012 at 12:11:11PM -0800, Ying Han wrote:

On Wed, Jan 18, 2012 at 11:14 PM, KAMEZAWA Hiroyuki
[off-list ref] wrote:

quoted

Thank you very much for reviewing previous RFC series.
This is a patch against memcg-devel and linux-next (can by applied without HUNKs).

==

From 64641b360839b029bb353fbd95f7554cc806ed05 Mon Sep 17 00:00:00 2001
From: KAMEZAWA Hiroyuki <redacted>
Date: Thu, 12 Jan 2012 16:08:33 +0900
Subject: [PATCH] memcg: remove unnecessary thp check in mem_cgroup_update_page_stat()

commit 58b318ecf(memcg-devel)
   memcg: make mem_cgroup_split_huge_fixup() more efficient
removes move_lock_page_cgroup() in thp-split path.

So, We do not have to check PageTransHuge in mem_cgroup_update_page_stat
and fallback into the locked accounting because both move charge and thp
split up are done with compound_lock so they cannot race. update vs.
move is protected by the mem_cgroup_stealed sufficiently.

Sorry, i don't see we changed the "move charge" to "move account" ?

move_account() moves charges.  IMO, it's the function that is a
misnomer and "moving charges" is less ambiguous since we account
several different things in the memory controller.

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