From: "Stephen C. Tweedie" <sct@redhat.com>
To: Jamie Lokier <jamie@shareable.org>
Cc: linux-mm <linux-mm@kvack.org>, Andrew Morton <akpm@osdl.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
Ulrich Drepper <drepper@redhat.com>,
Stephen Tweedie <sct@redhat.com>
Subject: Re: msync() behaviour broken for MS_ASYNC, revert patch?
Date: 21 Apr 2004 10:52:09 +0100 [thread overview]
Message-ID: <1082541128.2060.14.camel@sisko.scot.redhat.com> (raw)
In-Reply-To: <20040421021010.GC23621@mail.shareable.org>
Hi,
On Wed, 2004-04-21 at 03:10, Jamie Lokier wrote:
> msync(0) has always had behaviour consistent with the <=2.4.9 and
> >=2.5.68 MS_ASYNC behaviour, is that right?
Not sure about "always", but it looks like it recently at least. 2.2
msync was implemented very differently but seems, from the source, to
have the same property --- do_write_page() calls f_op->write() on msync,
and MS_SYNC forces an fsync after the writes. But 2.4 and 2.6 share
much more similar code to each other. So all since 2.2 seem to do the
fully-async, deferred writeback behaviour for flags==0.
--Stephen
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"aart@kvack.org"> aart@kvack.org </a>
prev parent reply other threads:[~2004-04-21 9:52 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-31 22:16 Stephen C. Tweedie
2004-03-31 22:37 ` Linus Torvalds
2004-03-31 23:41 ` Stephen C. Tweedie
2004-04-01 0:08 ` Linus Torvalds
2004-04-01 0:30 ` Andrew Morton
2004-04-01 15:40 ` Stephen C. Tweedie
2004-04-01 16:02 ` Linus Torvalds
2004-04-01 16:33 ` Stephen C. Tweedie
2004-04-01 16:19 ` Jamie Lokier
2004-04-01 16:56 ` s390 storage key inconsistency? [was Re: msync() behaviour broken for MS_ASYNC, revert patch?] Stephen C. Tweedie
2004-04-01 16:57 ` msync() behaviour broken for MS_ASYNC, revert patch? Stephen C. Tweedie
2004-04-01 18:51 ` Andrew Morton
2004-03-31 22:53 ` Andrew Morton
2004-03-31 23:20 ` Stephen C. Tweedie
2004-04-16 22:35 ` Jamie Lokier
2004-04-19 21:54 ` Stephen C. Tweedie
2004-04-21 2:10 ` Jamie Lokier
2004-04-21 9:52 ` Stephen C. Tweedie [this message]
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=1082541128.2060.14.camel@sisko.scot.redhat.com \
--to=sct@redhat.com \
--cc=akpm@osdl.org \
--cc=drepper@redhat.com \
--cc=jamie@shareable.org \
--cc=linux-kernel@vger.kernel.org \
--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