From: Michal Hocko <mhocko@suse.cz>
To: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: linux-mm@kvack.org
Subject: Re: [PATCH] mm/oom: Suppress unnecessary "sharing same memory" message.
Date: Mon, 1 Jun 2015 13:43:49 +0200 [thread overview]
Message-ID: <20150601114349.GE7147@dhcp22.suse.cz> (raw)
In-Reply-To: <201506011951.DCC81216.tMVQHLFOFFOJSO@I-love.SAKURA.ne.jp>
On Mon 01-06-15 19:51:05, Tetsuo Handa wrote:
[...]
> How can all fatal_signal_pending() "struct task_struct" get access to memory
> reserves when only one of fatal_signal_pending() "struct task_struct" has
> TIF_MEMDIE ?
Because of
/*
* If current has a pending SIGKILL or is exiting, then automatically
* select it. The goal is to allow it to allocate so that it may
* quickly exit and free its memory.
*
* But don't select if current has already released its mm and cleared
* TIF_MEMDIE flag at exit_mm(), otherwise an OOM livelock may occur.
*/
if (current->mm &&
(fatal_signal_pending(current) || task_will_free_mem(current))) {
mark_oom_victim(current);
goto out;
}
--
Michal Hocko
SUSE Labs
--
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>
next prev parent reply other threads:[~2015-06-01 11:43 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-25 14:33 Tetsuo Handa
2015-05-26 17:02 ` Michal Hocko
2015-05-26 21:39 ` Tetsuo Handa
2015-05-27 16:45 ` Michal Hocko
2015-05-27 21:59 ` Tetsuo Handa
2015-05-28 18:05 ` Michal Hocko
2015-05-29 12:40 ` [PATCH] mm/oom: Suppress unnecessary "sharing same memory"message Tetsuo Handa
2015-05-29 14:49 ` Michal Hocko
2015-05-29 17:20 ` [PATCH] mm/oom: Suppress unnecessary "sharing same memory" message Tetsuo Handa
2015-05-31 11:10 ` Tetsuo Handa
2015-06-01 9:58 ` Michal Hocko
2015-06-01 10:16 ` Michal Hocko
2015-06-01 12:02 ` Tetsuo Handa
2015-06-01 12:15 ` Michal Hocko
2015-06-01 13:04 ` Tetsuo Handa
2015-06-01 13:12 ` Michal Hocko
2015-06-01 15:27 ` Tetsuo Handa
2015-06-01 15:42 ` Michal Hocko
2015-06-01 9:03 ` Michal Hocko
2015-06-01 10:51 ` Tetsuo Handa
2015-06-01 11:43 ` Michal Hocko [this message]
2015-06-01 12:10 ` Tetsuo Handa
2015-06-01 12:17 ` Michal Hocko
2015-06-01 12:34 ` Tetsuo Handa
2015-06-01 13:05 ` Michal Hocko
2015-08-29 11:14 Tetsuo Handa
2015-09-01 13:34 ` Michal Hocko
2015-09-02 11:27 ` [PATCH] mm/oom: Suppress unnecessary "sharing same memory"message Tetsuo Handa
2015-09-02 14:24 ` Michal Hocko
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20150601114349.GE7147@dhcp22.suse.cz \
--to=mhocko@suse.cz \
--cc=linux-mm@kvack.org \
--cc=penguin-kernel@I-love.SAKURA.ne.jp \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox