ZFS does not expect transient errors from crypto. For read they are
counted as checksum errors, while for write end up in panic. To not
panic on random low memory conditions retry ENOMEM errors in the OCF
wrapper function.
While there remove unneeded timeout and priority from msleep().
External-issue: https://reviews.freebsd.org/D30339
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Mark Maybee <mark.maybee@delphix.com>
Signed-off-by: Alexander Motin <mav@FreeBSD.org>
Sponsored-By: iXsystems, Inc.
Closes#12077
5d4f7e7566