git: 27f4eda3ddce - main - vfs: Simplify vrefact()

The branch main has been updated by markj:

URL: https://cgit.FreeBSD.org/src/commit/?id=27f4eda3ddce4009a0ec9be68f474fe3be38933f

commit 27f4eda3ddce4009a0ec9be68f474fe3be38933f
Author:     Mark Johnston <markj@FreeBSD.org>
AuthorDate: 2024-01-04 13:11:44 +0000
Commit:     Mark Johnston <markj@FreeBSD.org>
CommitDate: 2024-01-04 13:39:52 +0000

    vfs: Simplify vrefact()
    
    refcount_acquire() returns the old value, just use that.  No functional
    change intended.
    
    Reviewed by:    kib
    MFC after:      1 week
    Differential Revision:  https://reviews.freebsd.org/D43255
---
 sys/kern/vfs_subr.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c
index d2a245081f3d..eb82f2d86aff 100644
--- a/sys/kern/vfs_subr.c
+++ b/sys/kern/vfs_subr.c
@@ -3345,14 +3345,11 @@ vref(struct vnode *vp)
 void
 vrefact(struct vnode *vp)
 {
+	int old __diagused;
 
 	CTR2(KTR_VFS, "%s: vp %p", __func__, vp);
-#ifdef INVARIANTS
-	int old = atomic_fetchadd_int(&vp->v_usecount, 1);
+	old = refcount_acquire(&vp->v_usecount);
 	VNASSERT(old > 0, vp, ("%s: wrong use count %d", __func__, old));
-#else
-	refcount_acquire(&vp->v_usecount);
-#endif
 }
 
 void