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authorKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>2010-03-10 15:22:30 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-12 15:52:37 -0800
commit430e48631e72aeab74d844c57b441f98a2e36eee (patch)
treee1b3eadc1b5c1871db0bf1247af8684b53cae12a /mm/percpu.c
parentc62b1a3b31b5e27a6c5c2e91cc5ce05fdb6344d0 (diff)
downloadlinux-430e48631e72aeab74d844c57b441f98a2e36eee.tar.bz2
memcg: update threshold and softlimit at commit
Presently, move_task does "batched" precharge. Because res_counter or css's refcnt are not-scalable jobs for memcg, try_charge_().. tend to be done in batched manner if allowed. Now, softlimit and threshold check their event counter in try_charge, but the charge is not a per-page event. And event counter is not updated at charge(). Moreover, precharge doesn't pass "page" to try_charge() and softlimit tree will be never updated until uncharge() causes an event." So the best place to check the event counter is commit_charge(). This is per-page event by its nature. This patch move checks to there. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Kirill A. Shutemov <kirill@shutemov.name> Cc: Balbir Singh <balbir@linux.vnet.ibm.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/percpu.c')
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