Module Name: src Committed By: ad Date: Sat Jan 25 18:42:24 UTC 2020
Modified Files: src/sys/kern [ad-namecache]: vfs_cwd.c Log Message: Add a missing membar to previous. To generate a diff of this commit: cvs rdiff -u -r1.4.62.1 -r1.4.62.2 src/sys/kern/vfs_cwd.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/vfs_cwd.c diff -u src/sys/kern/vfs_cwd.c:1.4.62.1 src/sys/kern/vfs_cwd.c:1.4.62.2 --- src/sys/kern/vfs_cwd.c:1.4.62.1 Sat Jan 25 15:54:03 2020 +++ src/sys/kern/vfs_cwd.c Sat Jan 25 18:42:24 2020 @@ -1,4 +1,4 @@ -/* $NetBSD: vfs_cwd.c,v 1.4.62.1 2020/01/25 15:54:03 ad Exp $ */ +/* $NetBSD: vfs_cwd.c,v 1.4.62.2 2020/01/25 18:42:24 ad Exp $ */ /*- * Copyright (c) 2008, 2020 The NetBSD Foundation, Inc. @@ -31,7 +31,7 @@ */ #include <sys/cdefs.h> -__KERNEL_RCSID(0, "$NetBSD: vfs_cwd.c,v 1.4.62.1 2020/01/25 15:54:03 ad Exp $"); +__KERNEL_RCSID(0, "$NetBSD: vfs_cwd.c,v 1.4.62.2 2020/01/25 18:42:24 ad Exp $"); #include <sys/param.h> #include <sys/atomic.h> @@ -183,8 +183,10 @@ cwdenter(krw_t op) * changes while the caller is pondering the cwdinfo. */ kpreempt_disable(); - if (__predict_true(mutex_owner(&cwdi->cwdi_lock) == NULL)) + if (__predict_true(mutex_owner(&cwdi->cwdi_lock) == NULL)) { + membar_consumer(); return cwdi; + } kpreempt_enable(); mutex_enter(&cwdi->cwdi_lock); } else {