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Btrfs: skip states when they does not contain bits to clear
authorLiu Bo <liubo2009@cn.fujitsu.com>
Thu, 16 Feb 2012 10:34:37 +0000 (18:34 +0800)
committerDavid Sterba <dsterba@suse.cz>
Thu, 16 Feb 2012 16:23:17 +0000 (17:23 +0100)
Clearing a range's bits is different with setting them, since we don't
need to touch them when states do not contain bits we want.

Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
fs/btrfs/extent_io.c patch | blob | history

diff --cc fs/btrfs/extent_io.c
Simple merge
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