Konstantin Belousov d5b7401f64 zfs dmu_read: loosen the assertion.
Since switch to the lockless grab, shared busy for ahead/behind pages
allows other threads to validate and map the pages readonly.

Reviewed by:	avg, jeff, markj
Sponsored by:	The FreeBSD Foundation
Differential revision:	https://reviews.freebsd.org/D23986
2020-03-06 21:15:25 +00:00
..