From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 629453BBA0B for ; Thu, 15 Jan 2026 16:40:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768495218; cv=none; b=DojV/7Of4I71Ae32BDv7QaZIIyLc6cMbftCO1B3jSKFlPKEzX1rda3bCAMi2nVEoN/GlsmojKeOvJVLoIeQd1YdhBLHazoA2s78CU+0LPkOIQnlpiIeVlQxIMLLfsgaxDoxy135DUafy+1nuj3CzNEUHUEOTXT57mQ6nX8tDdA8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768495218; c=relaxed/simple; bh=1lvnepn7sehXHxE85Mu511FNMqGabp8ol6fHfRaJAfg=; h=Date:To:From:Subject:Message-Id; b=TfAfOnMvzJEGGwMgvYdwaX13twoHAwSM1TV39RMT6B03aDTl31Dh9CQY8inMya7/xzHEV27PEaSHzw9XRsCu9f1z1CStHB68vL+GV6QAk8yzIaR+ClEtG8VNsdyQFD9GWi++S/46LXWIM75MitPyrXH5gY9iuUYRTUnNTqApzHw= 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=xOO2Cwt5; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="xOO2Cwt5" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DEF1EC116D0; Thu, 15 Jan 2026 16:40:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1768495218; bh=1lvnepn7sehXHxE85Mu511FNMqGabp8ol6fHfRaJAfg=; h=Date:To:From:Subject:From; b=xOO2Cwt5JHkf3pBwRwLEbmjv3piU5DMJxzBEoO2hRGYrEdzXFeq2dRaMkPSMUJXOd 4T3RiJvsCyvYGoPE/3I8653IvbrxaFw9x4tbHzKYWIIo8faG2vNpirPZeNCU/RDufm OCKX1G4eNh0+aUH6A4gZQvtLjlk9rW8qyikdxKHs= Date: Thu, 15 Jan 2026 08:40:17 -0800 To: mm-commits@vger.kernel.org,sj@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-damon-lru_sort-use-damon_kdamond_pid.patch added to mm-new branch Message-Id: <20260115164017.DEF1EC116D0@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: mm/damon/lru_sort: use damon_kdamond_pid() has been added to the -mm mm-new branch. Its filename is mm-damon-lru_sort-use-damon_kdamond_pid.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-damon-lru_sort-use-damon_kdamond_pid.patch This patch will later appear in the mm-new branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Note, mm-new is a provisional staging ground for work-in-progress patches, and acceptance into mm-new is a notification for others take notice and to finish up reviews. Please do not hesitate to respond to review feedback and post updated versions to replace or incrementally fixup patches in mm-new. The mm-new branch of mm.git is not included in linux-next Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via various branches at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there most days ------------------------------------------------------ From: SeongJae Park Subject: mm/damon/lru_sort: use damon_kdamond_pid() Date: Thu, 15 Jan 2026 07:20:43 -0800 DAMON_LRU_SORT directly uses damon_ctx->kdamond field with manual synchronization using damon_ctx->kdamond_lock, to get the pid of the kdamond. Use a new dedicated function for the purpose, namely damon_kdamond_pid(), since that doesn't require manual and error-prone synchronization. Link: https://lkml.kernel.org/r/20260115152047.68415-4-sj@kernel.org Signed-off-by: SeongJae Park Signed-off-by: Andrew Morton --- mm/damon/lru_sort.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/mm/damon/lru_sort.c~mm-damon-lru_sort-use-damon_kdamond_pid +++ a/mm/damon/lru_sort.c @@ -405,7 +405,9 @@ static int damon_lru_sort_turn(bool on) err = damon_start(&ctx, 1, true); if (err) return err; - kdamond_pid = ctx->kdamond->pid; + kdamond_pid = damon_kdamond_pid(ctx); + if (kdamond_pid < 0) + return kdamond_pid; return damon_call(ctx, &call_control); } _ Patches currently in -mm which might be from sj@kernel.org are mm-damon-core-introduce-nr_snapshots-damos-stat.patch mm-damon-sysfs-schemes-introduce-nr_snapshots-damos-stat-file.patch docs-mm-damon-design-update-for-nr_snapshots-damos-stat.patch docs-admin-guide-mm-damon-usage-update-for-nr_snapshots-damos-stat.patch docs-abi-damon-update-for-nr_snapshots-damos-stat.patch mm-damon-update-damos-kerneldoc-for-stat-field.patch mm-damon-core-implement-max_nr_snapshots.patch mm-damon-sysfs-schemes-implement-max_nr_snapshots-file.patch docs-mm-damon-design-update-for-max_nr_snapshots.patch docs-admin-guide-mm-damon-usage-update-for-max_nr_snapshots.patch docs-abi-damon-update-for-max_nr_snapshots.patch mm-damon-core-add-trace-point-for-damos-stat-per-apply-interval.patch mm-damon-tests-core-kunit-add-test-cases-for-multiple-regions-in-damon_test_split_regions_of-fix.patch mm-damon-core-introduce-active-memory-ratio-damos-quota-goal-metric.patch mm-damon-sysfs-schemes-support-damos_quota_active_mem_bp.patch docs-mm-damon-design-document-damos_quota_active_mem_bp.patch mm-damon-paddr-activate-damos_lru_prio-targets-instead-of-marking-accessed.patch mm-damon-lru_sort-consider-age-for-quota-prioritization.patch mm-damon-lru_sort-support-young-page-filters.patch docs-admin-guide-mm-damon-lru_sort-document-filter_young_pages.patch mm-damon-lru_sort-support-active-inactive-memory-ratio-based-auto-tuning.patch docs-admin-guide-mm-damon-lru_sort-document-active_mem_bp-parameter.patch mm-damon-lru_sort-add-monitoring-intervals-auto-tuning-parameter.patch docs-admin-guide-mm-damon-lru_sort-document-intervals-autotuning.patch mm-damon-core-implement-damon_kdamond_pid.patch mm-damon-sysfs-use-damon_kdamond_pid.patch mm-damon-lru_sort-use-damon_kdamond_pid.patch mm-damon-reclaim-use-damon_kdamond_pid.patch mm-damon-hide-kdamond-and-kdamond_lock-of-damon_ctx.patch