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 15AEB18DF80 for ; Sun, 18 Jan 2026 00:39:52 +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=1768696793; cv=none; b=gg/iCrVcBtmtovet+i99SVxG3UvWpD1sX2N73Bo4y4+ZZRYfIZhww4cWzwav3STx/4gDaph/tthgRMbzeiiFOTVL9yOo49q5P+JDj0eFTKOeE8qHaRFDPTDPy+PqE4GsZMco4jt2IiV8ItXob/vsXjeQmguge+66Gl+/Ok6O7Nk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768696793; c=relaxed/simple; bh=vdJOlpV48or7Kk1WDfjy0Xvgd+wKR/n7A1L+QAMSWlM=; h=Date:To:From:Subject:Message-Id; b=EIukBRAPtQ0yHxZMXWJOnsl+K0hy7BaAMT3ZCVgmpbeRL9reN28f+KFNgq83P8PHdMjPJBUOCQapLQ0p+zgMjHVUfO50Dr3TK8M+JwWDet8o4uOuSXcvQhjTPIvkMJn67uhnFKFMva/q5F1qRSqZks3lAqmBPML8L0GXTGDYIPg= 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=FXSPknAZ; 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="FXSPknAZ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 945FEC4CEF7; Sun, 18 Jan 2026 00:39:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1768696792; bh=vdJOlpV48or7Kk1WDfjy0Xvgd+wKR/n7A1L+QAMSWlM=; h=Date:To:From:Subject:From; b=FXSPknAZPg9aFub8C+M56+T3NWUoiPntu5FrYWdMD0Kx3hQ7fHulR5yuZZK6rfD7b qMn+jNvBHNBM9ezX+b/+y1rEQVlr7bpPioIthrBkxeIj2EYptGfMlzKkDEHB89v0dX 16vgcdD+2LCP2gT5TPg2M1GDRr8mDVyTcH4x6QHw= Date: Sat, 17 Jan 2026 16:39:52 -0800 To: mm-commits@vger.kernel.org,sj@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-damon-rename-damon_min_region-to-damon_min_region_sz.patch added to mm-new branch Message-Id: <20260118003952.945FEC4CEF7@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: rename DAMON_MIN_REGION to DAMON_MIN_REGION_SZ has been added to the -mm mm-new branch. Its filename is mm-damon-rename-damon_min_region-to-damon_min_region_sz.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-damon-rename-damon_min_region-to-damon_min_region_sz.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: rename DAMON_MIN_REGION to DAMON_MIN_REGION_SZ Date: Sat, 17 Jan 2026 09:52:54 -0800 The macro is for the default minimum size of each DAMON region. There was a case that a reader was confused if it is the minimum number of total DAMON regions, which is set on damon_attrs->min_nr_regions. Make the name more explicit. Link: https://lkml.kernel.org/r/20260117175256.82826-8-sj@kernel.org Signed-off-by: SeongJae Park Signed-off-by: Andrew Morton --- include/linux/damon.h | 2 +- mm/damon/core.c | 2 +- mm/damon/lru_sort.c | 2 +- mm/damon/reclaim.c | 2 +- mm/damon/sysfs.c | 2 +- mm/damon/tests/vaddr-kunit.h | 2 +- mm/damon/vaddr.c | 24 ++++++++++++------------ 7 files changed, 18 insertions(+), 18 deletions(-) --- a/include/linux/damon.h~mm-damon-rename-damon_min_region-to-damon_min_region_sz +++ a/include/linux/damon.h @@ -15,7 +15,7 @@ #include /* Minimal region size. Every damon_region is aligned by this. */ -#define DAMON_MIN_REGION PAGE_SIZE +#define DAMON_MIN_REGION_SZ PAGE_SIZE /* Max priority score for DAMON-based operation schemes */ #define DAMOS_MAX_SCORE (99) --- a/mm/damon/core.c~mm-damon-rename-damon_min_region-to-damon_min_region_sz +++ a/mm/damon/core.c @@ -553,7 +553,7 @@ struct damon_ctx *damon_new_ctx(void) ctx->attrs.max_nr_regions = 1000; ctx->addr_unit = 1; - ctx->min_sz_region = DAMON_MIN_REGION; + ctx->min_sz_region = DAMON_MIN_REGION_SZ; INIT_LIST_HEAD(&ctx->adaptive_targets); INIT_LIST_HEAD(&ctx->schemes); --- a/mm/damon/lru_sort.c~mm-damon-rename-damon_min_region-to-damon_min_region_sz +++ a/mm/damon/lru_sort.c @@ -298,7 +298,7 @@ static int damon_lru_sort_apply_paramete if (!monitor_region_start && !monitor_region_end) addr_unit = 1; param_ctx->addr_unit = addr_unit; - param_ctx->min_sz_region = max(DAMON_MIN_REGION / addr_unit, 1); + param_ctx->min_sz_region = max(DAMON_MIN_REGION_SZ / addr_unit, 1); if (!damon_lru_sort_mon_attrs.sample_interval) { err = -EINVAL; --- a/mm/damon/reclaim.c~mm-damon-rename-damon_min_region-to-damon_min_region_sz +++ a/mm/damon/reclaim.c @@ -208,7 +208,7 @@ static int damon_reclaim_apply_parameter if (!monitor_region_start && !monitor_region_end) addr_unit = 1; param_ctx->addr_unit = addr_unit; - param_ctx->min_sz_region = max(DAMON_MIN_REGION / addr_unit, 1); + param_ctx->min_sz_region = max(DAMON_MIN_REGION_SZ / addr_unit, 1); if (!damon_reclaim_mon_attrs.aggr_interval) { err = -EINVAL; --- a/mm/damon/sysfs.c~mm-damon-rename-damon_min_region-to-damon_min_region_sz +++ a/mm/damon/sysfs.c @@ -1470,7 +1470,7 @@ static int damon_sysfs_apply_inputs(stru /* addr_unit is respected by only DAMON_OPS_PADDR */ if (sys_ctx->ops_id == DAMON_OPS_PADDR) ctx->min_sz_region = max( - DAMON_MIN_REGION / sys_ctx->addr_unit, 1); + DAMON_MIN_REGION_SZ / sys_ctx->addr_unit, 1); err = damon_sysfs_set_attrs(ctx, sys_ctx->attrs); if (err) return err; --- a/mm/damon/tests/vaddr-kunit.h~mm-damon-rename-damon_min_region-to-damon_min_region_sz +++ a/mm/damon/tests/vaddr-kunit.h @@ -147,7 +147,7 @@ static void damon_do_test_apply_three_re damon_add_region(r, t); } - damon_set_regions(t, three_regions, 3, DAMON_MIN_REGION); + damon_set_regions(t, three_regions, 3, DAMON_MIN_REGION_SZ); for (i = 0; i < nr_expected / 2; i++) { r = __nth_region_of(t, i); --- a/mm/damon/vaddr.c~mm-damon-rename-damon_min_region-to-damon_min_region_sz +++ a/mm/damon/vaddr.c @@ -19,8 +19,8 @@ #include "ops-common.h" #ifdef CONFIG_DAMON_VADDR_KUNIT_TEST -#undef DAMON_MIN_REGION -#define DAMON_MIN_REGION 1 +#undef DAMON_MIN_REGION_SZ +#define DAMON_MIN_REGION_SZ 1 #endif /* @@ -78,7 +78,7 @@ static int damon_va_evenly_split_region( orig_end = r->ar.end; sz_orig = damon_sz_region(r); - sz_piece = ALIGN_DOWN(sz_orig / nr_pieces, DAMON_MIN_REGION); + sz_piece = ALIGN_DOWN(sz_orig / nr_pieces, DAMON_MIN_REGION_SZ); if (!sz_piece) return -EINVAL; @@ -161,12 +161,12 @@ next: swap(first_gap, second_gap); /* Store the result */ - regions[0].start = ALIGN(start, DAMON_MIN_REGION); - regions[0].end = ALIGN(first_gap.start, DAMON_MIN_REGION); - regions[1].start = ALIGN(first_gap.end, DAMON_MIN_REGION); - regions[1].end = ALIGN(second_gap.start, DAMON_MIN_REGION); - regions[2].start = ALIGN(second_gap.end, DAMON_MIN_REGION); - regions[2].end = ALIGN(prev->vm_end, DAMON_MIN_REGION); + regions[0].start = ALIGN(start, DAMON_MIN_REGION_SZ); + regions[0].end = ALIGN(first_gap.start, DAMON_MIN_REGION_SZ); + regions[1].start = ALIGN(first_gap.end, DAMON_MIN_REGION_SZ); + regions[1].end = ALIGN(second_gap.start, DAMON_MIN_REGION_SZ); + regions[2].start = ALIGN(second_gap.end, DAMON_MIN_REGION_SZ); + regions[2].end = ALIGN(prev->vm_end, DAMON_MIN_REGION_SZ); return 0; } @@ -259,8 +259,8 @@ static void __damon_va_init_regions(stru sz += regions[i].end - regions[i].start; if (ctx->attrs.min_nr_regions) sz /= ctx->attrs.min_nr_regions; - if (sz < DAMON_MIN_REGION) - sz = DAMON_MIN_REGION; + if (sz < DAMON_MIN_REGION_SZ) + sz = DAMON_MIN_REGION_SZ; /* Set the initial three regions of the target */ for (i = 0; i < 3; i++) { @@ -299,7 +299,7 @@ static void damon_va_update(struct damon damon_for_each_target(t, ctx) { if (damon_va_three_regions(t, three_regions)) continue; - damon_set_regions(t, three_regions, 3, DAMON_MIN_REGION); + damon_set_regions(t, three_regions, 3, DAMON_MIN_REGION_SZ); } } _ Patches currently in -mm which might be from sj@kernel.org are mm-damon-core-introduce-nr_snapshots-damos-stat.patch mm-damon-core-introduce-nr_snapshots-damos-stat-fix.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 mm-damon-lru_sort-support-active-inactive-memory-ratio-based-auto-tuning-fix.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 mm-vma-temporary-build-fix.patch selftests-damon-sysfs_memcg_path_leaksh-use-kmemleak.patch selftests-damon-wss_estimation-test-for-up-to-160-mib-working-set-size.patch selftests-damon-access_memory-add-repeat-mode.patch selftests-damon-wss_estimation-ensure-number-of-collected-wss.patch selftests-damon-wss_estimation-deduplicate-failed-samples-output.patch mm-damon-remove-damon_operations-cleanup.patch mm-damon-core-cleanup-targets-and-regions-at-once-on-kdamond-termination.patch mm-damon-core-cancel-damos_walk-before-damon_ctx-kdamond-reset.patch mm-damon-core-process-damon_call_control-requests-on-a-local-list.patch mm-damon-document-damon_call_control-dealloc_on_cancel-repeat-behavior.patch mm-damon-core-rename-damos_filter_out-to-damos_core_filter_out.patch mm-damon-rename-damon_min_region-to-damon_min_region_sz.patch mm-damon-rename-min_sz_region-of-damon_ctx-to-min_region_sz.patch