Mark Johnston 77011eac86 Check for a provider error before enqueuing mirror I/O.
We are otherwise susceptible to a race with a concurrent teardown of the
mirror provider, causing the I/O to be left uncompleted after the mirror
started withering.

Tested by:	pho
MFC after:	2 weeks
Sponsored by:	Dell EMC Isilon
2017-04-14 17:03:32 +00:00
..
2017-01-28 02:22:15 +00:00
2016-12-21 01:39:11 +00:00