linux-ext4 - Re: [PATCH v2] ext4: Create helper function for EXT4_IO_END_UNWRITTEN and i_aiodio

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Message-ID: <20111031213235.GL16825@thunk.org>
Date:	Mon, 31 Oct 2011 17:32:35 -0400
From:	Ted Ts'o <tytso@....edu>
To:	Tao Ma <tm@....ma>
Cc:	linux-ext4@...r.kernel.org, Eric Sandeen <sandeen@...hat.com>
Subject: Re: [PATCH v2] ext4: Create helper function for
 EXT4_IO_END_UNWRITTEN and i_aiodio_unwritten.

On Fri, Sep 30, 2011 at 05:41:56PM +0800, Tao Ma wrote:
> From: Tao Ma <boyu.mt@...bao.com>
> 
> EXT4_IO_END_UNWRITTEN flag set and the increase of i_aiodio_unwritten
> should be done simultaneously since ext4_end_io_nolock always clear the
> flag and decrease the counter in the same time.
> 
> We have found some bugs that the flag is set while leaving
> i_aiodio_unwritten unchanged(commit 32c80b32c053d). So this patch just tries
> to create a helper function to wrap them to avoid any future bug.
> The idea is inspired by Eric.
> 
> Cc: Eric Sandeen <sandeen@...hat.com>
> Signed-off-by: Tao Ma <boyu.mt@...bao.com>

Thanks, applied.

						- Ted
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