From: Johannes Weiner <hannes@cmpxchg.org>
To: Hillf Danton <hdanton@sina.com>
Cc: linux-mm <linux-mm@kvack.org>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
Matthew Wilcox <willy@infradead.org>,
Michal Hocko <mhocko@suse.com>,
Shakeel Butt <shakeelb@google.com>,
Minchan Kim <minchan@kernel.org>, Mel Gorman <mgorman@suse.de>,
Vladimir Davydov <vdavydov.dev@gmail.com>,
Jan Kara <jack@suse.cz>
Subject: Re: [RFC v2] mm: add page preemption
Date: Mon, 28 Oct 2019 11:56:17 -0400 [thread overview]
Message-ID: <20191028155617.GA3156@cmpxchg.org> (raw)
In-Reply-To: <20191026112808.14268-1-hdanton@sina.com>
On Sat, Oct 26, 2019 at 07:28:08PM +0800, Hillf Danton wrote:
>
> The cpu preemption feature makes a task able to preempt other tasks
> of lower priorities for cpu. It has been around for a while.
>
> This work introduces task prio into page reclaiming in order to add
> the page preemption feature that makes a task able to preempt other
> tasks of lower priorities for page.
>
> No page will be reclaimed on behalf of tasks of lower priorities
... at which point they'll declare OOM and kill the high-pri task?
Please have a look at the cgroup2 memory.low control. This memory
prioritization problem has already been solved.
next prev parent reply other threads:[~2019-10-28 15:56 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-26 11:28 [RFC v2] mm: add page preemption Hillf Danton
2019-10-28 12:26 ` Kirill A. Shutemov
2019-10-28 13:55 ` Hillf Danton
2019-10-28 15:56 ` Johannes Weiner [this message]
2019-10-29 3:04 ` Hillf Danton
2019-10-29 8:41 ` Michal Hocko
2019-10-29 15:27 ` Johannes Weiner
2019-10-29 12:30 ` Hillf Danton
2019-10-29 13:26 ` David Hildenbrand
2019-10-29 13:41 ` 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=20191028155617.GA3156@cmpxchg.org \
--to=hannes@cmpxchg.org \
--cc=akpm@linux-foundation.org \
--cc=hdanton@sina.com \
--cc=jack@suse.cz \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mgorman@suse.de \
--cc=mhocko@suse.com \
--cc=minchan@kernel.org \
--cc=shakeelb@google.com \
--cc=vdavydov.dev@gmail.com \
--cc=willy@infradead.org \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.