Module Name: src
Committed By: pgoyette
Date: Wed Jul 20 07:07:05 UTC 2016
Modified Files:
src/sys/kern [pgoyette-localcount]: subr_devsw.c
Log Message:
Improved comment. No code change.
To generate a diff of this commit:
cvs rdiff -u -r1.34.2.7 -r1.34.2.8 src/sys/kern/subr_devsw.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/kern/subr_devsw.c
diff -u src/sys/kern/subr_devsw.c:1.34.2.7 src/sys/kern/subr_devsw.c:1.34.2.8
--- src/sys/kern/subr_devsw.c:1.34.2.7 Sun Jul 17 21:40:47 2016
+++ src/sys/kern/subr_devsw.c Wed Jul 20 07:07:04 2016
@@ -1,4 +1,4 @@
-/* $NetBSD: subr_devsw.c,v 1.34.2.7 2016/07/17 21:40:47 pgoyette Exp $ */
+/* $NetBSD: subr_devsw.c,v 1.34.2.8 2016/07/20 07:07:04 pgoyette Exp $ */
/*-
* Copyright (c) 2001, 2002, 2007, 2008 The NetBSD Foundation, Inc.
@@ -69,7 +69,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: subr_devsw.c,v 1.34.2.7 2016/07/17 21:40:47 pgoyette Exp $");
+__KERNEL_RCSID(0, "$NetBSD: subr_devsw.c,v 1.34.2.8 2016/07/20 07:07:04 pgoyette Exp $");
#ifdef _KERNEL_OPT
#include "opt_dtrace.h"
@@ -404,13 +404,14 @@ devsw_detach_locked(const struct bdevsw
if (j < max_cdevsws )
cdevsw[j] = NULL;
- /* Wait for all current readers to finish with the devsw */
+ /* Wait for all current readers to finish with the devsw's */
pserialize_perform(device_psz);
/*
- * No new readers can reach the bdev and cdev via the
- * {b,c}devsw[] arrays. Wait for existing references to
- * drain, and then destroy.
+ * No new accessors can reach the bdev and cdev via the
+ * {b,c}devsw[] arrays, so no new references can be
+ * acquired. Wait for all existing references to drain,
+ * and then destroy.
*/
if (i < max_bdevsws && bdev->d_localcount != NULL) {
