linux-kernel - Re: [PATCH] fs: uselib - Set error on do_filp

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Message-ID: <20120421220911.GT6871@ZenIV.linux.org.uk>
Date:	Sat, 21 Apr 2012 23:09:11 +0100
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Sasikanth V <sasikanth.v19@...il.com>
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] fs: uselib - Set error on do_filp_open failure only

On Sun, Apr 22, 2012 at 03:19:43AM +0530, Sasikanth V wrote:
> At present "error" is set irrespective of do_filp_open failed or not.
> Setting error to PTR_ERR(file) on do_filp_open failure only.

NAK, since it's completely pointless.  PTR_ERR() is safe to use on *any*
pointers; result won't be anything interesting unless IS_ERR() is true,
but PTR_ERR() itself can be evaluated just fine.
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