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Wed, 3 Sep 2025 13:00:09 +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 +FNHNdk7uGitOAAAD6G6ig (envelope-from ); Wed, 03 Sep 2025 13:00:09 +0000 From: Vlastimil Babka Date: Wed, 03 Sep 2025 14:59:52 +0200 Subject: [PATCH v7 10/21] tools/testing/vma: Implement vm_refcnt reset MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250903-slub-percpu-caches-v7-10-71c114cdefef@suse.cz> References: <20250903-slub-percpu-caches-v7-0-71c114cdefef@suse.cz> In-Reply-To: <20250903-slub-percpu-caches-v7-0-71c114cdefef@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-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 75988180018 X-Stat-Signature: ewy7dqa5e6iogupkdbh46bme851jxq94 X-Rspam-User: X-HE-Tag: 1756904440-77274 X-HE-Meta: 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 5WjdmMIT COjJ0H3RSkpzMDZZlIUq9OG/taFOEjGmQ7oRms3bKt028hbBkUgnIAYnm8Ooj+v2Mi3zCEiVSHqrq2Lp447TxtUfgSL+fn6FKHubdrxle7dLB2UjXvTPCivC2t5Aafrd3TAzK3Mbxz7t2BLIrEggIn0dcRaiJEUlKJwpnegwtgxR3ccKTY/7wJXjSNrgrvIxH7NRjBvvuI2Nifdby9cCzfUszleS6y2Bndm80R+yk7Q+3dBHRLA1eqRFbqaT7mNtwg9+uuiG949W/mnaYIEC+AjzLSIKlLwSht2E/ 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 | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/vma/vma_internal.h b/tools/testing/vma/vma_internal.h index 3639aa8dd2b06ebe5b9cfcfe6669994fd38c482d..2f1c586400cfd65413d2ff82199590b43796b18c 100644 --- a/tools/testing/vma/vma_internal.h +++ b/tools/testing/vma/vma_internal.h @@ -1418,8 +1418,8 @@ static inline void ksm_exit(struct mm_struct *mm) static inline void vma_lock_init(struct vm_area_struct *vma, bool reset_refcnt) { - (void)vma; - (void)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