From: Andrea Arcangeli <andrea@suse.de>
To: "Jeff V. Merkey" <jmerkey@vger.timpanogas.org>
Cc: "Stephen C. Tweedie" <sct@redhat.com>,
Linus Torvalds <torvalds@transmeta.com>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
Ben LaHaise <bcrl@redhat.com>
Subject: Re: [patch] O_SYNC patch 3/3, add inode dirty buffer list support to ext2
Date: Fri, 24 Nov 2000 19:07:08 +0100 [thread overview]
Message-ID: <20001124190708.B30911@athlon.random> (raw)
In-Reply-To: <20001122112646.D6516@redhat.com> <20001122115424.A18592@vger.timpanogas.org> <20001123120135.D8368@redhat.com> <20001123130125.B23067@vger.timpanogas.org>
In-Reply-To: <20001123130125.B23067@vger.timpanogas.org>; from jmerkey@vger.timpanogas.org on Thu, Nov 23, 2000 at 01:01:25PM -0700
On Thu, Nov 23, 2000 at 01:01:25PM -0700, Jeff V. Merkey wrote:
> On Thu, Nov 23, 2000 at 12:01:35PM +0000, Stephen C. Tweedie wrote:
> > Hi,
> >
> > On Wed, Nov 22, 2000 at 11:54:24AM -0700, Jeff V. Merkey wrote:
> > >
> > > I have not implemented O_SYNC in NWFS, but it looks like I need to add it
> > > before posting the final patches. This patch appears to force write-through
> > > of only dirty inodes, and allow reads to continue from cache. Is this
> > > assumption correct
> >
> > Yes: O_SYNC is not required to force reads to be made from disk.
> > SingleUnix has an "O_RSYNC" option which does that, but O_SYNC and
> > O_DSYNC don't imply that.
>
> Cool. ORACLE is going to **SMOKE** on EXT2 with this change.
Note that this is nothing new, linux (say 2.2.18pre23) always used the O_SYNC
semantics Stephen implemented in the 2.4.x O_SYNC showstopper bugfix.
Andrea
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next prev parent reply other threads:[~2000-11-24 18:38 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-11-22 11:26 [patch] O_SYNC patch 3/3, add inode dirty buffer list support to ext2 Stephen C. Tweedie
2000-11-22 18:54 ` Jeff V. Merkey
2000-11-22 22:20 ` Josue Emmanuel Amaro
2000-11-23 12:01 ` Stephen C. Tweedie
2000-11-23 20:01 ` Jeff V. Merkey
2000-11-24 18:07 ` Andrea Arcangeli [this message]
2000-11-24 23:32 ` Eric W. Biederman
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