Btrfs: sort references by byte number during btrfs_inc_ref

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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 <chris.mason@oracle.com>

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This commit is contained in:

Chris Mason 2009-02-04 09:23:45 -05:00

parent b51912c91f

commit b7a9f29fcf

1 changed files with 79 additions and 6 deletions

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fs/btrfs/extent-tree.c

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