linux-mm.kvack.org archive mirror
 help / color / mirror / Atom feed
From: Jens Axboe <axboe@kernel.dk>
To: linux-mm <linux-mm@kvack.org>
Subject: schedule/sleep over mmget()
Date: Thu, 18 Jun 2020 09:20:40 -0600	[thread overview]
Message-ID: <398032e7-7cbf-3a28-75a7-f6586465f0c6@kernel.dk> (raw)

Hi,

Got a question that I couldn't immediately find an answer to. io_uring
currently jumps through a few hoops to avoid holding a process mm over
schedule, and it doesn't look like that's necessary.

Is it fine for a kthread to do mmget/kthread_use_mm at the start, and
only put/unuse when it exits? Or is it more prudent to drop/re-acquire
over schedule for potential longer periods of idleness?

Thanks,
-- 
Jens Axboe



             reply	other threads:[~2020-06-18 15:20 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-18 15:20 Jens Axboe [this message]
2020-06-19 11:43 ` Michal Hocko
2020-06-19 13:59   ` Jens Axboe

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=398032e7-7cbf-3a28-75a7-f6586465f0c6@kernel.dk \
    --to=axboe@kernel.dk \
    --cc=linux-mm@kvack.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox