Message-Id: <200611162113.kAGLDrLW024301@turing-police.cc.vt.edu>
To: Christian <christiand59@web.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: CIFS close with pending writes
In-Reply-To: Your message of "Wed, 15 Nov 2006 14:29:53 +0100."
             <200611151429.53388.christiand59@web.de>
From: Valdis.Kletnieks@vt.edu
References: <200611151429.53388.christiand59@web.de>
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On Wed, 15 Nov 2006 14:29:53 +0100, Christian said:

I was hitting this under 2.6.19-rc5-mm1 as well:

> [ 7190.693567] CIFS does not yet support partial page writes on O_WRONLY files

I get that one even without "heavy stressing" - just doing a CIFS mount of
a share from our NetApp and trying to copy a file onto it will trigger
this variant.  'cat /etc/motd >> /mnt/server/my_dir/foo' triggers it.
(changing the shell redirect to '1<>/mnt/server/my_dir/foo' solves THIS one,
and creates the second flavor:

> [ 7190.693600]  CIFS VFS: close with pending writes

Happens every time you close a file after writing anything other than an
exact multiple of 4K.

Some quick testing indicates that this works properly under -rc5-mm2 (in fact,
I didn't report it against -mm1 because when I discovered it the other day, I
already knew -mm2 was out...)


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