From: Liam R. Howlett <Liam.Howlett@oracle.com>
Date: Wed, 3 Sep 2025 12:59:52 +0000 (+0200)
Subject: tools/testing/vma: Implement vm_refcnt reset
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d09a61a3aa7de53fe055743993d79eaeb945cbad;p=thirdparty%2Fkernel%2Fstable.git

tools/testing/vma: Implement vm_refcnt reset

Add the reset of the ref count in vma_lock_init().  This is needed if
the vma memory is not zeroed on allocation.

Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reviewed-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
---

diff --git a/tools/testing/vma/vma_internal.h b/tools/testing/vma/vma_internal.h
index f8cf5b184d5b5..6b6e2b05918c9 100644
--- a/tools/testing/vma/vma_internal.h
+++ b/tools/testing/vma/vma_internal.h
@@ -1373,6 +1373,8 @@ static inline void ksm_exit(struct mm_struct *mm)
 
 static inline void vma_lock_init(struct vm_area_struct *vma, bool reset_refcnt)
 {
+	if (reset_refcnt)
+		refcount_set(&vma->vm_refcnt, 0);
 }
 
 static inline void vma_numab_state_init(struct vm_area_struct *vma)