linux-kernel - Re: [PATCH v3] fs, dlm: don't do pointless NULL check, use kzalloc and fix order of arguments

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Message-ID: <20110711150233.GC14426@redhat.com>
Date:	Mon, 11 Jul 2011 11:02:33 -0400
From:	David Teigland <teigland@...hat.com>
To:	Jesper Juhl <jj@...osbits.net>
Cc:	linux-kernel@...r.kernel.org, cluster-devel@...hat.com,
	Christine Caulfield <ccaulfie@...hat.com>,
	"Dr. David Alan Gilbert" <linux@...blig.org>
Subject: Re: [PATCH v3] fs, dlm: don't do pointless NULL check, use kzalloc
 and fix order of arguments

On Sun, Jul 10, 2011 at 10:54:31PM +0200, Jesper Juhl wrote:
> In fs/dlm/lock.c in the dlm_scan_waiters() function there are 3 small
> issues:
> 
> 1) There's no need to test the return value of the allocation and do a
> memset if is succeedes. Just use kzalloc() to obtain zeroed memory.
> 
> 2) Since kfree() handles NULL pointers gracefully, the test of
> 'warned' against NULL before the kfree() after the loop is completely
> pointless. Remove it.
> 
> 3) The arguments to kmalloc() (now kzalloc()) were swapped. Thanks to
> Dr. David Alan Gilbert for pointing this out.
> 
> Signed-off-by: Jesper Juhl <jj@...osbits.net>

Thanks, I pushed this and a patch for the other swapped kmalloc to the
next branch.
Dave

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