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(parent: 385accb) | patch
dm bio prison: switch to using a red black tree
authorJoe Thornber <ejt@redhat.com>
Mon, 6 Oct 2014 20:30:06 +0000 (16:30 -0400)
committerMike Snitzer <snitzer@redhat.com>
Mon, 10 Nov 2014 20:25:26 +0000 (15:25 -0500)
commit2f97d742e910351e3a91ccd623edf58cfac6efd7
tree17f9c41a52fa28c6a03840a0df24a3781c280217tree | snapshot
parent385accbda021f3bd0bdf4d048407e49cddd7362ccommit | diff
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>
drivers/md/dm-bio-prison.c diff | blob | history
drivers/md/dm-bio-prison.h diff | blob | history
drivers/md/dm-cache-target.c diff | blob | history
drivers/md/dm-thin.c diff | blob | history
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