Module Name: src
Committed By: ad
Date: Fri Jan 17 19:30:51 UTC 2020
Modified Files:
src/sys/arch/xen/xen: xbdback_xenbus.c
Log Message:
Acquire kernel_lock in the bp->b_iodone callback.
To generate a diff of this commit:
cvs rdiff -u -r1.72 -r1.73 src/sys/arch/xen/xen/xbdback_xenbus.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/arch/xen/xen/xbdback_xenbus.c
diff -u src/sys/arch/xen/xen/xbdback_xenbus.c:1.72 src/sys/arch/xen/xen/xbdback_xenbus.c:1.73
--- src/sys/arch/xen/xen/xbdback_xenbus.c:1.72 Sun Apr 7 12:21:20 2019
+++ src/sys/arch/xen/xen/xbdback_xenbus.c Fri Jan 17 19:30:51 2020
@@ -1,4 +1,4 @@
-/* $NetBSD: xbdback_xenbus.c,v 1.72 2019/04/07 12:21:20 bouyer Exp $ */
+/* $NetBSD: xbdback_xenbus.c,v 1.73 2020/01/17 19:30:51 ad Exp $ */
/*
* Copyright (c) 2006 Manuel Bouyer.
@@ -26,7 +26,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: xbdback_xenbus.c,v 1.72 2019/04/07 12:21:20 bouyer Exp $");
+__KERNEL_RCSID(0, "$NetBSD: xbdback_xenbus.c,v 1.73 2020/01/17 19:30:51 ad Exp $");
#include <sys/atomic.h>
#include <sys/buf.h>
@@ -1620,6 +1620,8 @@ xbdback_iodone(struct buf *bp)
struct xbdback_instance *xbdi;
int errp;
+ KERNEL_LOCK(1, NULL); /* XXXSMP */
+
xbd_io = bp->b_private;
xbdi = xbd_io->xio_xbdi;
@@ -1675,6 +1677,7 @@ xbdback_iodone(struct buf *bp)
xbdback_pool_put(&xbdback_io_pool, xbd_io);
xbdback_wakeup_thread(xbdi);
+ KERNEL_UNLOCK_ONE(NULL); /* XXXSMP */
}
/*
