From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
To: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, Hugh Dickins <hughd@google.com>,
linux-kernel@vger.kernel.org,
Markus Trippelsdorf <markus@trippelsdorf.de>
Subject: Re: [PATCH] mm: sync rss-counters at the end of exit_mm()
Date: Tue, 10 Apr 2012 09:35:29 +0900 [thread overview]
Message-ID: <4F838051.50101@jp.fujitsu.com> (raw)
In-Reply-To: <20120409200336.8368.63793.stgit@zurg>
(2012/04/10 5:03), Konstantin Khlebnikov wrote:
> On task's exit do_exit() calls sync_mm_rss() but this is not enough,
> there can be page-faults after this point, for example exit_mm() ->
> mm_release() -> put_user() (for processing tsk->clear_child_tid).
> Thus there may be some rss-counters delta in current->rss_stat.
>
> Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
> Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
> Cc: Hugh Dickins <hughd@google.com>
> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Does this fix recent issue reported ?
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next prev parent reply other threads:[~2012-04-10 0:37 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-09 20:03 [PATCH] mm: sync rss-counters at the end of exit_mm() Konstantin Khlebnikov
2012-04-09 21:04 ` KOSAKI Motohiro
2012-04-09 22:03 ` Hugh Dickins
2012-04-10 0:33 ` KAMEZAWA Hiroyuki
2012-04-10 6:34 ` Konstantin Khlebnikov
2012-04-10 16:04 ` Markus Trippelsdorf
2012-04-10 0:35 ` KAMEZAWA Hiroyuki [this message]
2012-04-10 5:43 ` Konstantin Khlebnikov
2012-04-10 17:07 ` [PATCH v2] mm: correctly synchronize rss-counters at exit/exec Konstantin Khlebnikov
2012-04-10 18:43 ` Andrew Morton
2012-04-10 19:52 ` Konstantin Khlebnikov
2012-04-10 19:10 ` Oleg Nesterov
2012-04-10 20:09 ` Konstantin Khlebnikov
2012-04-12 8:09 ` [PATCH 1/2] mm: set task exit code before complete_vfork_done() Konstantin Khlebnikov
2012-04-12 23:35 ` Andrew Morton
2012-04-12 23:54 ` Oleg Nesterov
2012-04-20 17:59 ` Oleg Nesterov
2012-04-20 19:23 ` Konstantin Khlebnikov
2012-04-20 20:41 ` Oleg Nesterov
2012-04-25 20:01 ` Andrew Morton
2012-04-12 8:09 ` [PATCH 2/2] mm: call complete_vfork_done() after clearing child_tid and flushing rss-counters Konstantin Khlebnikov
2012-04-12 23:39 ` Andrew Morton
2012-04-13 6:43 ` Konstantin Khlebnikov
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