linux-kernel - Re: [PATCH] tmpfs: support aio

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Message-ID: <Pine.LNX.4.64.0805291920120.553@blonde.site>
Date:	Thu, 29 May 2008 19:24:44 +0100 (BST)
From:	Hugh Dickins <hugh@...itas.com>
To:	Harvey Harrison <harvey.harrison@...il.com>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	hans-christoph.rohland@....com, leg@...gle.com, pbadari@...ibm.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tmpfs: support aio

On Wed, 28 May 2008, Harvey Harrison wrote:
> On Wed, 2008-05-28 at 16:58 -0700, Andrew Morton wrote:
> > 
> > 	count = 0;
> > 	retval = generic_segment_checks(iov, &nr_segs, &count, VERIFY_WRITE);
> > 	if (retval)
> > 		return retval;
> > 	if (count == 0)
> > 		return 0;
> > 
> > 	retval = 0;
> 
> retval has to be 0 here, no need to assign it again?

You're right, thanks: it was even more obviously stupid in my patch.
That came from copying generic_file_aio_read, then removing its O_DIRECT
block: though now I look closer, it's actually just as redundant in the
original.  I'll fix that up in the shmem.c and filemap.c patches to follow.

Hugh
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