tree a31918eb5bb8a8704bd24812496cf451d302c522
parent 8d44c98aac540cdf3cb5385bc6ef8d56930c7d70
author Joe Thornber <ejt@redhat.com> 1343398086 +0100
committer Alasdair G Kergon <agk@redhat.com> 1343398086 +0100

dm persistent data: only commit space map if index changed

Introduce bitmap_index_changed to track whether or not the index changed
then only commit a space map if it did.

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