From nobody Mon Feb 9 20:30:23 2026 Received: from out30-113.freemail.mail.aliyun.com (out30-113.freemail.mail.aliyun.com [115.124.30.113]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 153823D0AD for ; Fri, 29 Mar 2024 06:59:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=115.124.30.113 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711695586; cv=none; b=pzgFsI5MDU6B7aLjAQKkYH5+K2YEU7y/Avveq8cZxmJksHgB6JF61TAFMaMTjxDUyXMuevI0YICzbzIdBKy+uv6ZyupyfoIrqWGaX4nadVwrlt2VaIxHkJNauMpWIyepNITyd/SGS1LJlLGkhLznKeZHROWmx7Y7GOCuQdOPTe0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711695586; c=relaxed/simple; bh=MlvTnEko9J0D72PKDus8a0pEMZiiHf0b5YcP7UzLbdE=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=gyPIvqX+DzwU1xpF9ituWUG956fSYBacPBLAck5P9FjSNyDe4criwHPhbXl9Z3YtR98VLhNBtAunX+Y6R5NXaI7MCMXYpxAwCNEZ9+bN/Dci/5PheHN6pvSZ9F+brWlrGvL33ERNqKSXpvPGD5Pg0AqMxUbIPaySyL2Fd1zRr84= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com; spf=pass smtp.mailfrom=linux.alibaba.com; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b=fTOUGTCQ; arc=none smtp.client-ip=115.124.30.113 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b="fTOUGTCQ" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1711695583; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=+X5dDvewMP3Tm1C12o/ZlZF+7bV0b6t6gUSDEC10khs=; b=fTOUGTCQE3bN2OB3zN8m2guHWxFqAN6EHQJulzemav+T4I5/vtEnHISWBOylp7KYYBBuclBpmZxTl4KUnMq4fCsAxdJEcg4hkH26JJSHB/+3LeI1OzRXGP57CShIQ6F0pJBePplyfvoVEg2Hsr/LYLkpodaYVGS279GyjL0NQ3E= X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R111e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018046050;MF=baolin.wang@linux.alibaba.com;NM=1;PH=DS;RN=4;SR=0;TI=SMTPD_---0W3Vft4F_1711695582; Received: from localhost(mailfrom:baolin.wang@linux.alibaba.com fp:SMTPD_---0W3Vft4F_1711695582) by smtp.aliyun-inc.com; Fri, 29 Mar 2024 14:59:42 +0800 From: Baolin Wang To: akpm@linux-foundation.org Cc: baolin.wang@linux.alibaba.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH] mm: huge_memory: add the missing folio_test_pmd_mappable() for THP split statistics Date: Fri, 29 Mar 2024 14:59:33 +0800 Message-Id: X-Mailer: git-send-email 2.39.3 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Now the mTHP can also be split or added into the deferred list, so add folio_test_pmd_mappable() validation for PMD mapped THP, to avoid confusion with PMD mapped THP related statistics. Signed-off-by: Baolin Wang Acked-by: David Hildenbrand --- mm/huge_memory.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 1683de78c313..3ca9282a0dc9 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -3109,7 +3109,8 @@ int split_huge_page_to_list_to_order(struct page *pag= e, struct list_head *list, i_mmap_unlock_read(mapping); out: xas_destroy(&xas); - count_vm_event(!ret ? THP_SPLIT_PAGE : THP_SPLIT_PAGE_FAILED); + if (folio_test_pmd_mappable(folio)) + count_vm_event(!ret ? THP_SPLIT_PAGE : THP_SPLIT_PAGE_FAILED); return ret; } =20 @@ -3171,7 +3172,8 @@ void deferred_split_folio(struct folio *folio) =20 spin_lock_irqsave(&ds_queue->split_queue_lock, flags); if (list_empty(&folio->_deferred_list)) { - count_vm_event(THP_DEFERRED_SPLIT_PAGE); + if (folio_test_pmd_mappable(folio)) + count_vm_event(THP_DEFERRED_SPLIT_PAGE); list_add_tail(&folio->_deferred_list, &ds_queue->split_queue); ds_queue->split_queue_len++; #ifdef CONFIG_MEMCG --=20 2.39.3