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Commit ff4a88bf authored by Heinz Mauelshagen's avatar Heinz Mauelshagen Committed by Mike Snitzer
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dm raid: avoid superfluous memory barriers on static metadata 



Signed-off-by: default avatarHeinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: default avatarMike Snitzer <snitzer@redhat.com>
parent 7193a9de

drivers/md/dm-raid.c

+0 −5
Original line number Diff line number Diff line
@@ -366,14 +366,12 @@ static bool rs_is_reshapable(struct raid_set *rs) 
/* Return true, if raid set in @rs is recovering */

static bool rs_is_recovering(struct raid_set *rs)

{

	smp_rmb();

	return rs->md.recovery_cp != MaxSector;

}



/* Return true, if raid set in @rs is reshaping */

static bool rs_is_reshaping(struct raid_set *rs)

{

	smp_rmb();

	return rs->md.reshape_position != MaxSector;

}
@@ -1484,7 +1482,6 @@ static int rs_check_takeover(struct raid_set *rs) 
	struct mddev *mddev = &rs->md;

	unsigned int near_copies;



	smp_rmb();

	if (rs->md.degraded) {

		rs->ti->error = "Can't takeover degraded raid set";

		return -EPERM;
@@ -1758,8 +1755,6 @@ static int rs_check_reshape(struct raid_set *rs) 
{

	struct mddev *mddev = &rs->md;



	smp_rmb(); /* Make sure we access recent reshape position */



	if (!mddev->pers || !mddev->pers->check_reshape)

		rs->ti->error = "Reshape not supported";

	else if (mddev->degraded)