tree ec65357b2320ba4e4341a2853245048889666f5c
parent 9a3f530f39f4490eaa18b02719fb74ce5f4d2d86
author Dan Williams <dan.j.williams@intel.com> 1320729726 +1100
committer NeilBrown <neilb@suse.de> 1320729726 +1100

md/raid5: STRIPE_ACTIVE has lock semantics, add barriers

All updates that occur under STRIPE_ACTIVE should be globally visible
when STRIPE_ACTIVE clears.  test_and_set_bit() implies a barrier, but
clear_bit() does not.

This is suitable for 3.1-stable.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Cc: stable@kernel.org