All of lore.kernel.org
 help / color / mirror / Atom feed
From: Vivek Goyal <vgoyal@redhat.com>
To: linux-ext4@vger.kernel.org
Subject: Query about DIO/AIO WRITE throttling and ext4 serialization
Date: Wed, 1 Jun 2011 17:50:49 -0400	[thread overview]
Message-ID: <20110601215049.GC17449@redhat.com> (raw)

Hi,

If I throttle a DIO/AIO WRITE bio at block device in a cgroup, will it
lead to any kind of serialization of ext4 file system. IOW, is there any
filesystem operation which will wait for that DIO/AIO WRITE to finish
before other filesystem can make progress (fsync, journalling etc?)

I know that for throttling of buffered WRITES I do run into serialization
issues hence I was thinking of moving throttling buffered WRITE while
they are entering page cache and get rid of issues related to filesystem
serialization. I am not sure about DIO/AIO WRITES hence the question.

Thanks
Vivek

             reply	other threads:[~2011-06-01 21:50 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-06-01 21:50 Vivek Goyal [this message]
2011-06-02  1:22 ` Query about DIO/AIO WRITE throttling and ext4 serialization Dave Chinner
2011-06-02 14:17   ` Vivek Goyal
2011-06-02 14:36     ` Vivek Goyal
2011-06-02 15:56       ` Vivek Goyal
2011-06-02 23:51         ` Dave Chinner
2011-06-03  0:27           ` Vivek Goyal
2011-06-03  0:43             ` Ted Ts'o
2011-06-03  0:54               ` Vivek Goyal
2011-06-03  1:02                 ` Christoph Hellwig
2011-06-03  1:28                   ` Vivek Goyal
2011-06-03  1:33                     ` Vivek Goyal
2011-06-09 13:09                       ` Christoph Hellwig
2011-06-03  3:30                   ` Eric Sandeen
2011-06-03  5:00                     ` Christoph Hellwig
2011-06-03  1:11                 ` Ted Ts'o
2011-06-02 23:46     ` Dave Chinner

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=20110601215049.GC17449@redhat.com \
    --to=vgoyal@redhat.com \
    --cc=linux-ext4@vger.kernel.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.