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Wed, 10 Sep 2025 08:01:06 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id 2A5JKkIwwWgGJAAAD6G6ig (envelope-from ); Wed, 10 Sep 2025 08:01:06 +0000 From: Vlastimil Babka Date: Wed, 10 Sep 2025 10:01:14 +0200 Subject: [PATCH v8 12/23] tools/testing/vma: Implement vm_refcnt reset MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250910-slub-percpu-caches-v8-12-ca3099d8352c@suse.cz> References: <20250910-slub-percpu-caches-v8-0-ca3099d8352c@suse.cz> In-Reply-To: <20250910-slub-percpu-caches-v8-0-ca3099d8352c@suse.cz> To: Suren Baghdasaryan , "Liam R. Howlett" , Christoph Lameter , David Rientjes Cc: Roman Gushchin , Harry Yoo , Uladzislau Rezki , Sidhartha Kumar , linux-mm@kvack.org, linux-kernel@vger.kernel.org, rcu@vger.kernel.org, maple-tree@lists.infradead.org, vbabka@suse.cz X-Mailer: b4 0.14.2 X-Rspamd-Action: no action X-Stat-Signature: xfi9x9h67zjubk6ockfmigt3gp1ys5is X-Rspam-User: X-Rspamd-Queue-Id: 277A44001A X-Rspamd-Server: rspam04 X-HE-Tag: 1757491274-864401 X-HE-Meta: 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 UY5dH9+D /X7cqi/g94Qp74A+eIMSbR3snzSbXp/q7rABkwiO7rE/ZMRYq2DjcE/0ZlX2V1K2D6Ds0Jui/XFbfuf0BI5bHX+Gz/R3NBm4wBLLFReRshu81ocWti0lFhiHSwJMn4Lfm8lfMIJNJKifV96hZoV9MW4hSZHJ6UQhSUfvZTbMeKHsYkKthDhCEMRr33JWudhfKilUjSeomWw0AzDQfZkHQyW/+1dC0D/O6nqoMISbyPD46TLdjYfL9VqPqk7Jbem6y8bN0IYj4mDgLXT7aSNNETDCCBi2Xxn38bZcx5xINFehbNtBK00Z0NpWL8AHI7pm8Kt/yChu6z3+0zSk8y0pVGuHCTv9xUv0fslWz X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: "Liam R. Howlett" 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 Signed-off-by: Vlastimil Babka --- tools/testing/vma/vma_internal.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/tools/testing/vma/vma_internal.h b/tools/testing/vma/vma_internal.h index f8cf5b184d5b51dd627ff440943a7af3c549f482..6b6e2b05918c9f95b537f26e20a943b34082825a 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) -- 2.51.0