K 10
svn:author
V 3
mav
K 8
svn:date
V 27
2014-10-06T12:54:06.272680Z
K 7
svn:log
V 266
MFC r271503: Implement range checks between UNMAP and READ/WRITE commands.

Before this change UNMAP completely blocked other I/Os while running.
Now it blocks only colliding ones, slowing down others only due to ZFS
locks collisions.

Sponsored by:	iXsystems, Inc.

END