K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2020-03-06T21:15:25.760974Z
K 7
svn:log
V 294
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

END