linux-kernel - Re: [PATCH 2/6] staging: erofs: formatting fix to NULL comparison

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Date:   Fri, 31 Aug 2018 00:09:34 +0800
From:   Gao Xiang <hsiangkao@....com>
To:     Pavel Zemlyanoy <zemlyanoy@...ras.ru>
Cc:     Gao Xiang <gaoxiang25@...wei.com>, Chao Yu <yuchao0@...wei.com>,
        ldv-project@...uxtesting.org, devel@...verdev.osuosl.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org, linux-erofs@...ts.ozlabs.org
Subject: Re: [PATCH 2/6] staging: erofs: formatting fix to NULL comparison

Hi Pavel,

On 2018/8/30 23:13, Pavel Zemlyanoy wrote:
> This patch does not change the logic, it only
> corrects the formatting and checkpatch checks by
> to NULL comparison.
> 
> The patch fixes 5 checks of type:
> "Comparison to NULL could be written".
> 
> Signed-off-by: Pavel Zemlyanoy <zemlyanoy@...ras.ru>

Sorry about the late reply. I am on vacation now.

Personally, I use "== NULL" or "!= NULL" on purpose, since it is more 
emphasized than the checkpatch.pl suggested way, and I tend to use the nullptr explicitly.

BTW, It seems other filesystems still use "== NULL" or "!= NULL" explicitly, too, eg:
xfs, ext4, ext2, ocfs2, etc... You could 'grep' in the fs directory... 

Other commits look good for me at glance.

Thanks,
Gao Xiang