linux-ext4 - fs/ext4/inode.c::mpage_map_and_submit_extent

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Date:	Sun, 7 Jul 2013 11:54:55 +0200
From:	Stefan Richter <stefanr@...6.in-berlin.de>
To:	Jan Kara <jack@...e.cz>
Cc:	linux-ext4@...r.kernel.org
Subject: fs/ext4/inode.c::mpage_map_and_submit_extent - unused variable
 warning

Hi,

gcc 4.6.3 says:
fs/ext4/inode.c: In function ‘ext4_writepages’:
fs/ext4/inode.c:2219:6: warning: ‘err’ may be used uninitialized in this function [-Wuninitialized]
fs/ext4/inode.c:2161:6: note: ‘err’ was declared here

It would be an actual bug if mpage_map_and_submit_extent(handle, mpd, ...)
can be called with mpd->map.m_len == 0.  Can it?
-- 
Stefan Richter
-=====-===-= -=== --===
http://arcgraph.de/sr/
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