linux-ext4 - [Bug 55651] Non-atomic short write problem with O

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Message-Id: <20130327184635.A07D811FB3C@bugzilla.kernel.org>
Date:	Wed, 27 Mar 2013 18:46:35 +0000 (UTC)
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 55651] Non-atomic short write problem with O_APPEND

https://bugzilla.kernel.org/show_bug.cgi?id=55651


Quentin Barnes <qbarnes@...il.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|ext4                        |VFS
     Kernel Version|3.8.4                       |3.9-rc4




--- Comment #3 from Quentin Barnes <qbarnes@...il.com>  2013-03-27 18:46:35 ---
I tracked the problem down to the specific patch a50527b1.

Since now I know the problem is not specific to ext[34], I'm
updating the ticket to be the VFS layer.  (HOWEVER, Bugzilla
won't let me change the assignee to fs_vfs@...nel-bugs.osdl.org.
Can someone do that for me?)

With the patch in place (even up to and including 3.9-rc4), the
attached test (mlt-auto.c) fails.

If I git revert a50527b1 out of 3.9-rc4, the test passes.

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