tree 1d15b08035b871d9fd2fab9df882fdef68330ab1
parent 41d35d25e9d4e1b5e944b70f1bec272bcff5f489
author Joe Thornber <ejt@redhat.com> 1376054372 +0100
committer Mike Snitzer <snitzer@redhat.com> 1384039224 -0500

dm space map disk: optimise sm_disk_dec_block

Don't waste time spotting blocks that have been allocated and then freed
in the same transaction.

The extra lookup is expensive, and I don't think it really gives us much.

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