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Btrfs: sort references by byte number during btrfs_inc_ref
When a block goes through cow, we update the reference counts of everything that block points to. The internal pointers of the block can be in just about any order, and it is likely to have clusters of things that are close together and clusters of things that are not. To help reduce the seeks that come with updating all of these reference counts, sort them by byte number before actual updates are done. Signed-off-by: Chris Mason <[email protected]>
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