linux-kernel - Re: [PATCH] mm/cgroup.c add error check

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Message-ID: <6599ad830805070043y4465a32h8e26c5e8890b1100@mail.gmail.com>
Date:	Wed, 7 May 2008 00:43:45 -0700
From:	"Paul Menage" <menage@...gle.com>
To:	"KAMEZAWA Hiroyuki" <kamezawa.hiroyu@...fujitsu.com>
Cc:	"KOSAKI Motohiro" <kosaki.motohiro@...fujitsu.com>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>, "Li Zefan" <lizf@...fujitsu.com>
Subject: Re: [PATCH] mm/cgroup.c add error check

On Wed, May 7, 2008 at 12:45 AM, KAMEZAWA Hiroyuki
<kamezawa.hiroyu@...fujitsu.com> wrote:
>  Hmm, but It seems call_usermodehelper()'s fails in silent, no messages.
>  A notify which can be silently dropped is useless.

True, but if we're so short of memory that we can't fork, userspace
probably won't be able to do much about the notification even if it
gets it.

>  Can we add 'printk("notify_on_release: ... is failed")' or some workaround ?
>

Sounds reasonable for debugging, but don't expect any automated
middleware to notice it.

Paul
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