linux-ext4 - Re: [PATCH] ext4: fix some warnings from sparse check introduced by COLLAPSE

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Message-ID: <20140412172352.GH13837@thunk.org>
Date:	Sat, 12 Apr 2014 13:23:52 -0400
From:	Theodore Ts'o <tytso@....edu>
To:	Zheng Liu <gnehzuil.liu@...il.com>
Cc:	linux-ext4@...r.kernel.org,
	Andreas Dilger <adilger.kernel@...ger.ca>,
	Namjae Jeon <namjae.jeon@...sung.com>,
	Zheng Liu <wenqing.lz@...bao.com>
Subject: Re: [PATCH] ext4: fix some warnings from sparse check introduced by
 COLLAPSE_RANGE patches

On Sat, Apr 12, 2014 at 05:16:18PM +0800, Zheng Liu wrote:
> From: Zheng Liu <wenqing.lz@...bao.com>
> 
> This commit tries to fix some byte order issues that is found by sparse
> check.
> 
> $ make M=fs/ext4 C=2 CF=-D__CHECK_ENDIAN__
> ...
>   CHECK   fs/ext4/extents.c
> fs/ext4/extents.c:5232:41: warning: restricted __le32 degrades to integer
> fs/ext4/extents.c:5236:52: warning: bad assignment (-=) to restricted __le32
> fs/ext4/extents.c:5258:45: warning: bad assignment (-=) to restricted __le32
> fs/ext4/extents.c:5303:28: warning: restricted __le32 degrades to integer
> fs/ext4/extents.c:5318:18: warning: incorrect type in assignment (different base types)
> fs/ext4/extents.c:5318:18:    expected unsigned int [unsigned] [usertype] ex_start
> fs/ext4/extents.c:5318:18:    got restricted __le32 [usertype] ee_block
> fs/ext4/extents.c:5319:24: warning: restricted __le32 degrades to integer
> fs/ext4/extents.c:5334:31: warning: incorrect type in assignment (different base types)
> ...
> 
> Cc: "Theodore Ts'o" <tytso@....edu>
> Cc: Andreas Dilger <adilger.kernel@...ger.ca>
> Cc: Namjae Jeon <namjae.jeon@...sung.com>
> Signed-off-by: Zheng Liu <wenqing.lz@...bao.com>

Thanks, queued for the 3.15 bugfix push.

						- Ted
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