tree 594f3024476830cb98887266b282307cc960dd3d
parent 11f0431be2f99c574a65c6dfc0ca205511500f29
author Heinz Mauelshagen <heinzm@redhat.com> 1401978189 +0100
committer Mike Snitzer <snitzer@redhat.com> 1402519734 -0400

dm bio prison: implement per bucket locking in the dm_bio_prison hash table

Split the single per bio-prison lock by using per bucket locking.  Per
bucket locking benefits both dm-thin and dm-cache targets by reducing
bio-prison lock contention.

Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>