linux-kernel - Re: Commit edf064e7c (btrfs: nowait aio support) breaks shells

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Message-ID: <20170704153751.GA273@x4>
Date:   Tue, 4 Jul 2017 17:37:51 +0200
From:   Markus Trippelsdorf <markus@...ppelsdorf.de>
To:     Goldwyn Rodrigues <rgoldwyn@...e.de>
Cc:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-btrfs@...r.kernel.org, David Sterba <dsterba@...e.com>,
        Jens Axboe <axboe@...nel.dk>
Subject: Re: Commit edf064e7c (btrfs: nowait aio support) breaks shells

On 2017.07.04 at 10:31 -0500, Goldwyn Rodrigues wrote:
> 
> 
> On 07/04/2017 02:45 AM, Markus Trippelsdorf wrote:
> > On 2017.07.04 at 06:23 +0200, Markus Trippelsdorf wrote:
> >> commit edf064e7c6fec3646b06c944a8e35d1a3de5c2c3 (HEAD, refs/bisect/bad)
> >> Author: Goldwyn Rodrigues <rgoldwyn@...e.com>
> >> Date:   Tue Jun 20 07:05:49 2017 -0500
> >>
> >>     btrfs: nowait aio support
> >>
> >> apparently breaks several shell related features on my system.
> > 
> > Here is a simple testcase:
> > 
> >  % echo "foo" >> test
> >  % echo "foo" >> test
> >  % cat test
> >  foo
> >  %
> > 
> 
> Thanks for testing.
> Yes, pos must be set with iocb->ki_pos for appends. I should not have
> removed the initialization. Could you try this patch?

It fixes the issue. Thank you.

-- 
Markus