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authorJoe Thornber <ejt@redhat.com>2014-10-07 00:30:06 +0400
committerMike Snitzer <snitzer@redhat.com>2014-11-10 23:25:26 +0300
commita195db2d29a47c2c3a61386009bd400df18c86cf (patch)
tree17f9c41a52fa28c6a03840a0df24a3781c280217 /drivers/md/dm-thin-metadata.h
parent33096a7822de63bc7dbdd090870b656a0304fa35 (diff)
downloadlinux-a195db2d29a47c2c3a61386009bd400df18c86cf.tar.xz
dm bio prison: switch to using a red black tree
Previously it was using a fixed sized hash table. There are times when very many concurrent cells are held (such as when processing a very large discard). When this happens the hash table performance becomes very poor. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-thin-metadata.h')
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