Re: [PATCH] Btrfs: Remove useless condition

[Mike Fedyk]

On Sun, Sep 12, 2010 at 6:56 AM, Jaswinder Singh Rajput
<jaswinderlinux@xxxxxxxxx> wrote:
> Hello,
>
> On Sun, Sep 12, 2010 at 5:59 PM, Johannes Weiner <hannes@xxxxxxxxxxx> wrote:
>> On Sun, Sep 12, 2010 at 04:32:20PM +0530, Jaswinder Singh Rajput wrote:
>>>
>>> if (ret) is useless as it will be never NULL as in previous statement
>>> we are setting ret = prev for !ret
>>
>> If there is no match and no extent below the given file offset, `prev'
>> will be NULL as well, no?
>>
>> So the check is not useless, it prevents throwing out a cached success
>> in case of a lookup failure.
>>
>
> Got it !!
>

Wouldn't it be clearer and easier to read if prev was checked directly
instead of checking ret after it becomes the same as prev?
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