Module Name: src
Committed By: riastradh
Date: Sun Dec 19 11:21:38 UTC 2021
Modified Files:
src/sys/external/bsd/drm2/linux: linux_rwsem.c
Log Message:
linux: Use IPL_VM for lock inside rw_semaphore.
down_read_trylock needs to work under a spin lock.
To generate a diff of this commit:
cvs rdiff -u -r1.1 -r1.2 src/sys/external/bsd/drm2/linux/linux_rwsem.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_rwsem.c
diff -u src/sys/external/bsd/drm2/linux/linux_rwsem.c:1.1 src/sys/external/bsd/drm2/linux/linux_rwsem.c:1.2
--- src/sys/external/bsd/drm2/linux/linux_rwsem.c:1.1 Sun Dec 19 11:21:30 2021
+++ src/sys/external/bsd/drm2/linux/linux_rwsem.c Sun Dec 19 11:21:38 2021
@@ -1,4 +1,4 @@
-/* $NetBSD: linux_rwsem.c,v 1.1 2021/12/19 11:21:30 riastradh Exp $ */
+/* $NetBSD: linux_rwsem.c,v 1.2 2021/12/19 11:21:38 riastradh Exp $ */
/*-
* Copyright (c) 2021 The NetBSD Foundation, Inc.
@@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: linux_rwsem.c,v 1.1 2021/12/19 11:21:30 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: linux_rwsem.c,v 1.2 2021/12/19 11:21:38 riastradh Exp $");
#include <sys/types.h>
@@ -45,7 +45,7 @@ void
init_rwsem(struct rw_semaphore *rwsem)
{
- mutex_init(&rwsem->rws_lock, MUTEX_DEFAULT, IPL_NONE);
+ mutex_init(&rwsem->rws_lock, MUTEX_DEFAULT, IPL_VM);
cv_init(&rwsem->rws_cv, "lnxrwsem");
rwsem->rws_writer = NULL;
rwsem->rws_readers = 0;
