From: Andrew Morton <akpm@linux-foundation.org>
To: Theodore Tso <tytso@mit.edu>
Cc: Jens Axboe <jens.axboe@oracle.com>,
linux-ext4@vger.kernel.org,
Arjan van de Ven <arjan@infradead.org>
Subject: Re: [PATCH, RFC] Use WRITE_SYNC in __block_write_full_page() if WBC_SYNC_ALL
Date: Mon, 5 Jan 2009 10:47:13 -0800 [thread overview]
Message-ID: <20090105104713.78fdabc9.akpm@linux-foundation.org> (raw)
In-Reply-To: <20090105144740.GA4116@mit.edu>
On Mon, 5 Jan 2009 09:47:40 -0500 Theodore Tso <tytso@mit.edu> wrote:
> there will be times (i.e., when we are doing a checkpoint as
> opposed to a commit, or in a fsync-heavy workload), where we will end
> up getting blocked behind kjournald, so upping the I/O priority really
> does make sense.
Not if it will cause kjournald writes to be prioritised ahead of any
reads, I suspect. Writes are rarely synchronous, but with reads,
there's almost always someone waiting.
next prev parent reply other threads:[~2009-01-05 18:47 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-04 21:52 [PATCH, RFC] Use WRITE_SYNC in __block_write_full_page() if WBC_SYNC_ALL Theodore Ts'o
2009-01-04 22:23 ` Andrew Morton
2009-01-04 22:43 ` Theodore Tso
2009-01-04 22:43 ` Theodore Tso
2009-01-04 23:19 ` Andrew Morton
2009-01-05 0:21 ` Theodore Tso
2009-01-05 8:02 ` Jens Axboe
2009-01-05 14:47 ` Theodore Tso
2009-01-05 15:58 ` Jens Axboe
2009-01-05 18:47 ` Andrew Morton [this message]
2009-01-05 19:35 ` Theodore Tso
2009-01-05 19:38 ` Jens Axboe
2009-01-05 21:16 ` Theodore Tso
2009-01-06 7:34 ` 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=20090105104713.78fdabc9.akpm@linux-foundation.org \
--to=akpm@linux-foundation.org \
--cc=arjan@infradead.org \
--cc=jens.axboe@oracle.com \
--cc=linux-ext4@vger.kernel.org \
--cc=tytso@mit.edu \
/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.