Re: [PATCH 09/12] staging: lustre: obdclass: Use !x to check for kzalloc failure

From	Julia Lawall <julia.lawall@lip6.fr>
Newsgroups	linux.kernel
Subject	Re: [PATCH 09/12] staging: lustre: obdclass: Use !x to check for kzalloc failure
Date	2015-06-21 12:30 +0200
Message-ID	<pDKFH-2kw-3@gated-at.bofh.it> (permalink)
References	<pDurf-4pO-5@gated-at.bofh.it> <pDuAW-4Dl-9@gated-at.bofh.it> <pDKmm-1Yl-5@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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> > @@ -885,7 +885,7 @@ static int lmd_parse_mgssec(struct lustr
> >  		length = tail - ptr;
> >  
> >  	lmd->lmd_mgssec = kzalloc(length + 1, GFP_NOFS);
> > -	if (lmd->lmd_mgssec == NULL)
> > +	if (!lmd->lmd_mgssec)
> >  		return -ENOMEM;
> >  
> >  	memcpy(lmd->lmd_mgssec, ptr, length);
> looks like memdup()

kmemdup has the same length for both calls.  There is kstrndup, but it
recalculates the length, which looks unnecessary here.

julia
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Thread

[PATCH 00/12] Use !x to check for kzalloc failure Julia Lawall <Julia.Lawall@lip6.fr> - 2015-06-20 19:10 +0200
  [PATCH 04/12] staging: lustre: ldlm: Use !x to check for kzalloc failure Julia Lawall <Julia.Lawall@lip6.fr> - 2015-06-20 19:10 +0200
  [PATCH 02/12] staging: lustre: fld: Use !x to check for kzalloc failure Julia Lawall <Julia.Lawall@lip6.fr> - 2015-06-20 19:10 +0200
  [PATCH 07/12] staging: lustre: mdc: Use !x to check for kzalloc failure Julia Lawall <Julia.Lawall@lip6.fr> - 2015-06-20 19:10 +0200
  [PATCH 03/12] staging: lustre: lclient: Use !x to check for kzalloc failure Julia Lawall <Julia.Lawall@lip6.fr> - 2015-06-20 19:10 +0200
  [PATCH 11/12] staging: lustre: osc: Use !x to check for kzalloc failure Julia Lawall <Julia.Lawall@lip6.fr> - 2015-06-20 19:20 +0200
  [PATCH 06/12] staging: lustre: lov: Use !x to check for kzalloc failure Julia Lawall <Julia.Lawall@lip6.fr> - 2015-06-20 19:20 +0200
  [PATCH 01/12] staging: lustre: fid: Use !x to check for kzalloc failure Julia Lawall <Julia.Lawall@lip6.fr> - 2015-06-20 19:20 +0200
    Re: LIBCFS_ALLOC Dan Carpenter <dan.carpenter@oracle.com> - 2015-06-29 00:00 +0200
    Re: [lustre-devel] LIBCFS_ALLOC "Dilger, Andreas" <andreas.dilger@intel.com> - 2015-06-30 23:30 +0200
  [PATCH 09/12] staging: lustre: obdclass: Use !x to check for kzalloc failure Julia Lawall <Julia.Lawall@lip6.fr> - 2015-06-20 19:20 +0200
    Re: [PATCH 09/12] staging: lustre: obdclass: Use !x to check for  kzalloc failure walter harms <wharms@bfs.de> - 2015-06-21 12:10 +0200
      Re: [PATCH 09/12] staging: lustre: obdclass: Use !x to check for  kzalloc failure Julia Lawall <julia.lawall@lip6.fr> - 2015-06-21 12:30 +0200
  [PATCH 10/12] staging: lustre: obdecho: Use !x to check for kzalloc failure Julia Lawall <Julia.Lawall@lip6.fr> - 2015-06-20 19:20 +0200
  [PATCH 05/12] staging: lustre: lmv: Use !x to check for kzalloc failure Julia Lawall <Julia.Lawall@lip6.fr> - 2015-06-20 19:20 +0200
  [PATCH 12/12] staging: lustre: ptlrpc: Use !x to check for kzalloc failure Julia Lawall <Julia.Lawall@lip6.fr> - 2015-06-20 19:20 +0200
  [PATCH 08/12] staging: lustre: mgc: Use !x to check for kzalloc failure Julia Lawall <Julia.Lawall@lip6.fr> - 2015-06-20 19:20 +0200

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