tree eed999e7c42d8262fcdedaec8a8ed28962de6859
parent ec746e10cb2e6276a8d2e036454792fe0674864a
author Kevin Wolf <kwolf@redhat.com> 1386171824 +0100
committer Kevin Wolf <kwolf@redhat.com> 1390581602 +0100

block: Generalise and optimise COR serialisation

Change the API so that specific requests can be marked serialising. Only
these requests are checked for overlaps then.

This means that during a Copy on Read operation, not all requests
overlapping other requests are serialised any more, but only those that
actually overlap with the specific COR request.

Also remove COR from function and variable names because this
functionality can be useful in other contexts.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Benoit Canet <benoit@irqsave.net>