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authorMiao Xie <miaox@cn.fujitsu.com>2014-01-15 20:00:54 +0800
committerChris Mason <clm@fb.com>2014-01-28 13:20:38 -0800
commit26b47ff65bcdff8473b87680d8f876c66208087b (patch)
treeae3b44171edfed95b63efd89f86b993216c0d203 /fs/hostfs
parentffcfaf81795471be3c07d6e3143bff31edca5d5a (diff)
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Btrfs: change the members' order of btrfs_space_info structure to reduce the cache miss
It is better that the position of the lock is close to the data which is protected by it, because they may be in the same cache line, we will load less cache lines when we access them. So we rearrange the members' position of btrfs_space_info structure to make the lock be closer to the its data. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Reviewed-by: David Sterba <dsterba@suse.cz> Signed-off-by: Josef Bacik <jbacik@fb.com> Signed-off-by: Chris Mason <clm@fb.com>
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