On 08/07/2013 06:11 AM, Joe Perches wrote:
> On Tue, 2013-08-06 at 14:43 -0700, Andrew Morton wrote:
>> On Tue, 06 Aug 2013 15:29:42 +0800 Chen Gang <gang.c...@asianux.com> wrote:
>>
>>> Improve the usage of return value 'result', so not only can make code
>>> clearer to readers, but also can improve the performance.
>>
>> It used to be pervasive kernel style do to
>>
>> ret = -ENOMEM;
>> foo = alloc(...);
>> if (!foo)
>> goto out;
>>
>> whereas nowadays people usually do the more straightforward
>>
>> foo = alloc(...);
>> if (!foo) {
>> ret = -ENOMEM;
>> goto out;
>> }
>>
>> The thinking was that the old style generated better code, but for the
>> life of me I can't remember why :(
>
> https://lkml.org/lkml/2008/12/16/383
>
Thank you for your information.
--
Chen Gang
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