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Commit 53ad1c98 authored by David Teigland's avatar David Teigland
Browse files

dlm: fix QUECVT when convert queue is empty 



The QUECVT flag should not prevent conversions from
being granted immediately when the convert queue is
empty.

Signed-off-by: default avatarDavid Teigland <teigland@redhat.com>
parent dd775ae2

fs/dlm/lock.c

+12 −0
Original line number Diff line number Diff line
@@ -1736,6 +1736,18 @@ static int _can_be_granted(struct dlm_rsb *r, struct dlm_lkb *lkb, int now) 
	if (now && conv && !(lkb->lkb_exflags & DLM_LKF_QUECVT))

		return 1;



	/*

	 * Even if the convert is compat with all granted locks,

	 * QUECVT forces it behind other locks on the convert queue.

	 */



	if (now && conv && (lkb->lkb_exflags & DLM_LKF_QUECVT)) {

		if (list_empty(&r->res_convertqueue))

			return 1;

		else

			goto out;

	}



	/*

	 * The NOORDER flag is set to avoid the standard vms rules on grant

	 * order.