From: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
To: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: Petr Mladek <pmladek@suse.com>,
Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>,
mhocko@suse.com, linux-mm@kvack.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jslaby@suse.cz>,
linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm/page_alloc: Wait for oom_lock before retrying.
Date: Fri, 13 Jan 2017 12:53:07 +0900 [thread overview]
Message-ID: <20170113035307.GD9360@jagdpanzerIV.localdomain> (raw)
In-Reply-To: <20170113025212.GB9360@jagdpanzerIV.localdomain>
On (01/13/17 11:52), Sergey Senozhatsky wrote:
[..]
> and we really don't want to cond_resched() when we are in panic.
> that's why console_flush_on_panic() sets it to zero explicitly.
>
> console_trylock() checks oops_in_progress, so re-taking the semaphore
> when we are in
>
> panic()
> console_flush_on_panic()
> console_unlock()
> console_trylock()
>
> should be OK. as well as doing get_console_conditional_schedule() somewhere
> in console driver code.
d'oh... no, this is false. console_flush_on_panic() is called after we
bust_spinlocks(0), BUT with local IRQs disabled. so console_trylock()
would still set console_may_schedule to 0.
-ss
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next prev parent reply other threads:[~2017-01-13 3:52 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-06 10:33 [PATCH] mm/page_alloc: Wait for oom_lock before retrying Tetsuo Handa
2016-12-07 8:15 ` Michal Hocko
2016-12-07 15:29 ` Tetsuo Handa
2016-12-08 8:20 ` Vlastimil Babka
2016-12-08 11:00 ` Tetsuo Handa
2016-12-08 13:32 ` Michal Hocko
2016-12-08 16:18 ` Sergey Senozhatsky
2016-12-08 13:27 ` Michal Hocko
2016-12-09 14:23 ` Tetsuo Handa
2016-12-09 14:46 ` Michal Hocko
2016-12-10 11:24 ` Tetsuo Handa
2016-12-12 9:07 ` Michal Hocko
2016-12-12 11:49 ` Petr Mladek
2016-12-12 13:00 ` Michal Hocko
2016-12-12 14:05 ` Tetsuo Handa
2016-12-13 1:06 ` Sergey Senozhatsky
2016-12-12 12:12 ` Tetsuo Handa
2016-12-12 12:55 ` Michal Hocko
2016-12-12 13:19 ` Michal Hocko
2016-12-13 12:06 ` Tetsuo Handa
2016-12-13 17:06 ` Michal Hocko
2016-12-14 11:37 ` Tetsuo Handa
2016-12-14 12:42 ` Michal Hocko
2016-12-14 16:36 ` Tetsuo Handa
2016-12-14 18:18 ` Michal Hocko
2016-12-15 10:21 ` Tetsuo Handa
2016-12-19 11:25 ` Tetsuo Handa
2016-12-19 12:27 ` Sergey Senozhatsky
2016-12-20 15:39 ` Sergey Senozhatsky
2016-12-22 10:27 ` Tetsuo Handa
2016-12-22 10:53 ` Petr Mladek
2016-12-22 13:40 ` Sergey Senozhatsky
2016-12-22 13:33 ` Tetsuo Handa
2016-12-22 19:24 ` Michal Hocko
2016-12-24 6:25 ` Tetsuo Handa
2016-12-26 11:49 ` Michal Hocko
2016-12-27 10:39 ` Tetsuo Handa
2016-12-27 10:57 ` Michal Hocko
2016-12-22 13:42 ` Sergey Senozhatsky
2016-12-22 14:01 ` Tetsuo Handa
2016-12-22 14:09 ` Sergey Senozhatsky
2016-12-22 14:30 ` Sergey Senozhatsky
2016-12-26 10:54 ` Tetsuo Handa
2016-12-26 11:34 ` Sergey Senozhatsky
2017-01-12 13:10 ` Petr Mladek
2017-01-13 2:52 ` Sergey Senozhatsky
2017-01-13 3:53 ` Sergey Senozhatsky [this message]
2017-01-13 11:15 ` Petr Mladek
2017-01-13 11:14 ` Petr Mladek
2017-01-12 14:18 ` Petr Mladek
2017-01-13 2:28 ` Sergey Senozhatsky
2017-01-13 11:03 ` Petr Mladek
2017-01-13 11:50 ` Sergey Senozhatsky
2017-01-13 12:15 ` Petr Mladek
2016-12-26 11:41 ` Sergey Senozhatsky
2017-01-13 14:03 ` Petr Mladek
2016-12-15 1:11 ` Sergey Senozhatsky
2016-12-15 6:35 ` Michal Hocko
2016-12-15 10:16 ` Petr Mladek
2016-12-14 9:37 ` Petr Mladek
2016-12-14 10:20 ` Sergey Senozhatsky
2016-12-14 11:01 ` Petr Mladek
2016-12-14 12:23 ` Sergey Senozhatsky
2016-12-14 12:47 ` Petr Mladek
2016-12-14 10:26 ` Michal Hocko
2016-12-15 7:34 ` Sergey Senozhatsky
2016-12-14 11:37 ` Tetsuo Handa
2016-12-14 12:36 ` Petr Mladek
2016-12-14 12:44 ` Michal Hocko
2016-12-14 13:36 ` Tetsuo Handa
2016-12-14 13:52 ` Michal Hocko
2016-12-14 12:50 ` Sergey Senozhatsky
2016-12-12 14:59 ` Tetsuo Handa
2016-12-12 15:55 ` Michal Hocko
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