From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 BB8EA2931CE for ; Wed, 7 Oct 2026 00:48:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791334134; cv=none; b=paEEffZkBNfWkhPCtZtiLpPiGFtV58UFfDGkzLTB+PjRmw1bpBLFsxvAIsV5nETX8p05vcDZ5EdtKQcQq/LPTtChEeG5/rnZpslvAo+N2ISo+EFL6OleYYcmYSUrI2mXtPcGYgccR23Fmayz+LMbJgjQI+k25AMj4o1O4dW2ecs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791334134; c=relaxed/simple; bh=a8gEUcfMlY1nNdyzc3SVSrhew3WpBYuf0WBAhTpH/FU=; h=Date:To:From:Subject:Message-Id; b=K2zgJfMTpCH2aa830Q+HHtxLTIyZfq9+5a+sI9mSOhBJ3oiR7x8NmZbNjvEVwr/YnQmixTwrdnHGsPUIJirHi5Y06XYzunoRuTIGZPBhUFwKW0MhXtiNPW3GSFfM9Phl98vk9ijPsUCyJ9z6VGKCMyoecrCz/JeqKmiwSMBVntI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=CJrg7SIj; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="CJrg7SIj" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 664921F0089C; Wed, 7 Oct 2026 00:48:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1791334133; bh=3q+QuzmoLbM+ZgUGrF/BF523iaIq0cK46EQDbuNrC8s=; h=Date:To:From:Subject; b=CJrg7SIj6yU9dkT4OnFajdeaDdq1X6FBpPyXN6c1PdaXfpKbdp0f6uvStnKQ5KqV1 +SblVKfS1A5y7aQ4siD+ugcQYw62177+nQGqrzWHUCrwPInvlhp0iD8Vmo+ftUZUiX ImmOoO4GC7vUSAGgsuDnCxALAPWNbpc8MDeNbOgU= Date: Tue, 06 Oct 2026 17:48:53 -0700 To: mm-commits@vger.kernel.org,xu.xin16@zte.com.cn,wangkefeng.wang@huawei.com,vbabka@kernel.org,surenb@google.com,sunnanyong@huawei.com,shr@devkernel.io,rppt@kernel.org,rdunlap@infradead.org,mhocko@suse.com,ljs@kernel.org,liam@infradead.org,david@kernel.org,corbet@lwn.net,chengming.zhou@linux.dev,tujinjiang@huawei.com,akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] mm-ksm-fix-advisor_min_pages_to_scan-description.patch removed from -mm tree Message-Id: <20261007004853.664921F0089C@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The quilt patch titled Subject: mm/ksm: fix advisor_min_pages_to_scan description has been removed from the -mm tree. Its filename was mm-ksm-fix-advisor_min_pages_to_scan-description.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Jinjiang Tu Subject: mm/ksm: fix advisor_min_pages_to_scan description Date: Mon, 24 Aug 2026 14:10:10 +0800 Both Documentation/admin-guide/mm/ksm.rst and the comment next to the variable definition in mm/ksm.c describe advisor_min_pages_to_scan as a lower limit of the pages_to_scan parameter, but that is not how the scan-time advisor actually uses it. commit 4e5fa4f5eff6 ("mm/ksm: add ksm advisor") only uses it to initialize ksm_thread_pages_to_scan when the scan-time advisor is enabled. ksm_thread_pages_to_scan is adjusted by scan_time_advisor() after a full scan finishes. ksm_thread_pages_to_scan could be increased or decreased depend on the real scan time is longer or shorter than the target scan time. The min value of ksm_thread_pages_to_scan is only limited by KSM_ADVISOR_MIN_CPU, so ksm_thread_pages_to_scan could be smaller than ksm_advisor_min_pages_to_scan. The semantics of advisor_min_pages_to_scan was updated in the v2 patchset [1], but the documentation wasn't updated. Update the documentation and comment to match the semantics of advisor_min_pages_to_scan. Link: https://lore.kernel.org/linux-mm/20231028000945.2428830-2-shr@devkernel.io/ [1] Link: https://lore.kernel.org/20260824061010.3343959-3-tujinjiang@huawei.com Signed-off-by: Jinjiang Tu Signed-off-by: Andrew Morton Acked-by: David Hildenbrand (Arm) Reviewed-by: Lorenzo Stoakes (ARM) Cc: Chengming Zhou Cc: Jonathan Corbet Cc: Kefeng Wang Cc: Liam R. Howlett Cc: Michal Hocko Cc: Mike Rapoport Cc: Nanyong Sun Cc: Stefan Roesch Cc: Suren Baghdasaryan Cc: Vlastimil Babka Cc: xu xin Cc: Randy Dunlap --- Documentation/admin-guide/mm/ksm.rst | 4 ++-- mm/ksm.c | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) --- a/Documentation/admin-guide/mm/ksm.rst~mm-ksm-fix-advisor_min_pages_to_scan-description +++ a/Documentation/admin-guide/mm/ksm.rst @@ -183,8 +183,8 @@ advisor_target_scan_time pages. The default value is 200 seconds. advisor_min_pages_to_scan - specifies the lower limit of the ``pages_to_scan`` parameter of the - scan time advisor. The default is 500. + specifies the initial value of the ``pages_to_scan`` parameter of + the scan time advisor. The default is 500. advisor_max_pages_to_scan specifies the upper limit of the ``pages_to_scan`` parameter of the --- a/mm/ksm.c~mm-ksm-fix-advisor_min_pages_to_scan-description +++ a/mm/ksm.c @@ -348,7 +348,7 @@ static enum ksm_advisor_type ksm_advisor * Only called through the sysfs control interface: */ -/* At least scan this many pages per batch. */ +/* Initial number of pages to scan per batch. */ static unsigned long ksm_advisor_min_pages_to_scan = 500; static void set_advisor_defaults(void) _ Patches currently in -mm which might be from tujinjiang@huawei.com are