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Message-ID: <20110518174327.GB20655@tux1.beaverton.ibm.com>
Date: Wed, 18 May 2011 10:43:27 -0700
From: "Darrick J. Wong" <djwong@...ibm.com>
To: Jan Kara <jack@...e.cz>
Cc: tytso@....edu, Edward Goggin <egoggin@...are.com>,
linux-ext4@...r.kernel.org
Subject: Re: [PATCH 0/2] Fix sending of a barrier and transaction waiting
in ext4_sync_file()
On Tue, May 17, 2011 at 12:28:13PM +0200, Jan Kara wrote:
>
> Hi Ted,
>
> the two patches below fix ext4_sync_file() to wait for a transaction commit
> properly (return value of jbd2_log_start_commit() is not exactly what
> ext4_sync_file() thinks it is). It also optimizes / fixes sending of a barrier
> in some cases (e.g. in ordered mode with external journal we cannot really
> depend on transaction commit to issue a barrier to fs device because we don't
> seem to add inode to a transaction for overwrites).
Probably a silly nit to pick, but do you mean "flush" instead of "barrier"?
--D
>
> I already fixed ext3 in this regard some time ago but didn't get to porting the
> patches to ext4.
>
> Honza
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