Module Name: src
Committed By: riastradh
Date: Mon Aug 27 13:35:35 UTC 2018
Modified Files:
src/sys/external/bsd/drm2/linux: linux_reservation.c
Log Message:
Wait for the read to be valid!
To generate a diff of this commit:
cvs rdiff -u -r1.1 -r1.2 src/sys/external/bsd/drm2/linux/linux_reservation.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/external/bsd/drm2/linux/linux_reservation.c
diff -u src/sys/external/bsd/drm2/linux/linux_reservation.c:1.1 src/sys/external/bsd/drm2/linux/linux_reservation.c:1.2
--- src/sys/external/bsd/drm2/linux/linux_reservation.c:1.1 Mon Aug 27 13:33:59 2018
+++ src/sys/external/bsd/drm2/linux/linux_reservation.c Mon Aug 27 13:35:35 2018
@@ -1,4 +1,4 @@
-/* $NetBSD: linux_reservation.c,v 1.1 2018/08/27 13:33:59 riastradh Exp $ */
+/* $NetBSD: linux_reservation.c,v 1.2 2018/08/27 13:35:35 riastradh Exp $ */
/*-
* Copyright (c) 2018 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: linux_reservation.c,v 1.1 2018/08/27 13:33:59 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: linux_reservation.c,v 1.2 2018/08/27 13:35:35 riastradh Exp $");
#include <linux/fence.h>
#include <linux/reservation.h>
@@ -281,7 +281,8 @@ reservation_object_read_begin(struct res
struct reservation_object_read_ticket *ticket)
{
- ticket->version = robj->robj_version;
+ while ((ticket->version = robj->robj_version) & 1)
+ SPINLOCK_BACKOFF_HOOK;
membar_consumer();
}
