Module Name: src
Committed By: ad
Date: Sun Dec 8 19:24:26 UTC 2019
Modified Files:
src/sys/ufs/lfs: lfs_segment.c
Log Message:
Avoid thundering herd: cv_broadcast(&bp->b_busy) -> cv_signal(&bp->b_busy)
To generate a diff of this commit:
cvs rdiff -u -r1.278 -r1.279 src/sys/ufs/lfs/lfs_segment.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/ufs/lfs/lfs_segment.c
diff -u src/sys/ufs/lfs/lfs_segment.c:1.278 src/sys/ufs/lfs/lfs_segment.c:1.279
--- src/sys/ufs/lfs/lfs_segment.c:1.278 Mon Sep 3 16:29:37 2018
+++ src/sys/ufs/lfs/lfs_segment.c Sun Dec 8 19:24:26 2019
@@ -1,4 +1,4 @@
-/* $NetBSD: lfs_segment.c,v 1.278 2018/09/03 16:29:37 riastradh Exp $ */
+/* $NetBSD: lfs_segment.c,v 1.279 2019/12/08 19:24:26 ad Exp $ */
/*-
* Copyright (c) 1999, 2000, 2001, 2002, 2003 The NetBSD Foundation, Inc.
@@ -60,7 +60,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: lfs_segment.c,v 1.278 2018/09/03 16:29:37 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: lfs_segment.c,v 1.279 2019/12/08 19:24:26 ad Exp $");
#ifdef DEBUG
# define vndebug(vp, str) do { \
@@ -2197,7 +2197,7 @@ lfs_writeseg(struct lfs *fs, struct segm
if (unbusybp != NULL) {
unbusybp->b_cflags &= ~BC_BUSY;
if (unbusybp->b_cflags & BC_WANTED)
- cv_broadcast(&bp->b_busy);
+ cv_signal(&bp->b_busy);
}
}
mutex_exit(&bufcache_lock);
