svn commit: r366783 - in head/sys: kern sys
Mateusz Guzik
mjg at FreeBSD.org
Sat Oct 17 08:47:09 UTC 2020
Author: mjg
Date: Sat Oct 17 08:47:08 2020
New Revision: 366783
URL: https://svnweb.freebsd.org/changeset/base/366783
Log:
vfs: annotate mountlist_mtx with __exclusive_cache_line
Modified:
head/sys/kern/vfs_mount.c
head/sys/sys/mount.h
Modified: head/sys/kern/vfs_mount.c
==============================================================================
--- head/sys/kern/vfs_mount.c Sat Oct 17 04:14:46 2020 (r366782)
+++ head/sys/kern/vfs_mount.c Sat Oct 17 08:47:08 2020 (r366783)
@@ -96,7 +96,7 @@ static uma_zone_t mount_zone;
struct mntlist mountlist = TAILQ_HEAD_INITIALIZER(mountlist);
/* For any iteration/modification of mountlist */
-struct mtx mountlist_mtx;
+struct mtx_padalign __exclusive_cache_line mountlist_mtx;
MTX_SYSINIT(mountlist, &mountlist_mtx, "mountlist", MTX_DEF);
EVENTHANDLER_LIST_DEFINE(vfs_mounted);
Modified: head/sys/sys/mount.h
==============================================================================
--- head/sys/sys/mount.h Sat Oct 17 04:14:46 2020 (r366782)
+++ head/sys/sys/mount.h Sat Oct 17 08:47:08 2020 (r366783)
@@ -997,7 +997,7 @@ int vfs_suser(struct mount *, struct thread *);
void vfs_unbusy(struct mount *);
void vfs_unmountall(void);
extern TAILQ_HEAD(mntlist, mount) mountlist; /* mounted filesystem list */
-extern struct mtx mountlist_mtx;
+extern struct mtx_padalign mountlist_mtx;
extern struct nfs_public nfs_pub;
extern struct sx vfsconf_sx;
#define vfsconf_lock() sx_xlock(&vfsconf_sx)
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