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 8EB9650C2B7 for ; Thu, 3 Sep 2026 20:45:02 +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=1788468319; cv=none; b=WYvyDO+0l22qFMV/5w1bGYSaSVM4cwOskB1BOnHRcI0Z3ZDyxlvsu+M7p+UJLUmPIPZBi/TR83/hx5xwoG1XJpwI81glc4gnSX3ckpj9/JnuvjpVyLzclcKzgpEYN1P9dFE4XFThA0vGsQ0NLdjBkESkisc0LaOXeBe3+w+VSh0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788468319; c=relaxed/simple; bh=9Vyk9OLWWLODflkZhb/roxjS7xoD8GZgm2zxhfKc/K4=; h=Date:To:From:Subject:Message-Id; b=lrLly2y/NOMlAIL+FRe+RoSGD5skJYXtZ81emfIQqro2k50WZDEe3lTrwU+5DV02je65zPQtyWjQAhFYrXafB/ukNHCbEbmCfrcz0BPvLbUlu8SYus+u2DP6pIU5vsrJ/+jJI5dsthqUvFh04t8+aSvLvSe3AkWlGfO6u9/4U8U= 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=IrbjegbO; 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="IrbjegbO" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 301001F00A3E; Thu, 3 Sep 2026 20:44:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1788468299; bh=z+1WT6HezKMmPIEGJkTenTyagnt8lb0ZAa91NKf202o=; h=Date:To:From:Subject; b=IrbjegbOGUggnvlys3VyjAsmCAPjrO5rwVFdWOIdP9AePaIV4bak4cI4tQurLrNH/ V8gZsdig7Th8SMrx5N9HeIsAIaKzYklZHTKkurUiHNyQ3lDWiVsVfI3bGDj69WtPqp Q1mTkNnNWgx6KtjE/a+qL+b41/s3nxgSxhammX8E= Date: Thu, 03 Sep 2026 13:44:58 -0700 To: mm-commits@vger.kernel.org,sj@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-damon-reclaim-remove-unnecessary-damon_call-param-validation.patch added to mm-new branch Message-Id: <20260903204459.301001F00A3E@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/reclaim: remove unnecessary damon_call() param validation has been added to the -mm mm-new branch. Its filename is mm-damon-reclaim-remove-unnecessary-damon_call-param-validation.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-damon-reclaim-remove-unnecessary-damon_call-param-validation.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 If a few days of testing in mm-new is successful, the patch will me moved into mm.git's mm-unstable branch, which is 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: SJ Park Subject: mm/damon/reclaim: remove unnecessary damon_call() param validation Date: Wed, 2 Sep 2026 18:03:32 -0700 DAMON_RECLAIM avoids passing NULL or unstarted damon_ctx to damon_call() with its own validation. The validation is no longer needed, because the DAMON core layer now handles the corner cases itself. Remove the unnecessary check. Link: https://lore.kernel.org/20260903010334.93622-4-sj@kernel.org Signed-off-by: SJ Park Signed-off-by: Andrew Morton --- mm/damon/reclaim.c | 8 -------- 1 file changed, 8 deletions(-) --- a/mm/damon/reclaim.c~mm-damon-reclaim-remove-unnecessary-damon_call-param-validation +++ a/mm/damon/reclaim.c @@ -271,8 +271,6 @@ static int damon_reclaim_commit_inputs_f return damon_reclaim_apply_parameters(); } -static bool damon_reclaim_damon_has_started; - static int damon_reclaim_commit_inputs_store(const char *val, const struct kernel_param *kp) { @@ -293,10 +291,6 @@ static int damon_reclaim_commit_inputs_s if (!commit_inputs_request) return 0; - /* Skip damon_call() if ctx has not successfully started. */ - if (!damon_reclaim_damon_has_started) - return -EINVAL; - err = damon_call(ctx, &control); return err ? err : control.return_code; @@ -343,8 +337,6 @@ static int damon_reclaim_turn(bool on) err = damon_start(&ctx, 1, true); if (err) return err; - if (!damon_reclaim_damon_has_started) - damon_reclaim_damon_has_started = true; return damon_call(ctx, &call_control); } _ Patches currently in -mm which might be from sj@kernel.org are mm-damon-core-skip-applying-scheme-if-region-split-for-quota-fails.patch mm-damon-paddr-respect-folio-end-for-damos_stat.patch mm-damon-paddr-respect-folio-end-for-damos-actions-except-stat.patch mm-damon-vaddr-respect-folio-end-for-damos_stat.patch mm-damon-vaddr-respect-folio-end-for-damos_migrate_hotcold.patch mm-damon-core-handle-extreme-memory-state-in-damon_get_node_mem_bp.patch mm-damon-core-handle-extreme-memory-state-in-get_node_memcg_used_bp.patch mm-damon-core-handle-extreme-memory-state-in-get_in_active_mem_bp.patch mm-damon-core-introduce-damon_filter_type_pgidle_unset.patch mm-damon-paddr-support-pgidle_unset-probe-filter-type.patch mm-damon-sysfs-support-pgidle_unset-probe-filter-type.patch docs-mm-damon-design-document-pgidle_unset-probe-filter-type.patch mm-damon-core-introduce-damon_prep-struct.patch mm-damon-core-commit-preps.patch mm-damon-core-introduce-damon_operations-prep_probes.patch mm-damon-paddr-support-damon_prep.patch mm-damon-sysfs-implement-preps-directory.patch mm-damon-sysfs-implement-preps-nr_preps-file.patch mm-damon-sysfs-create-directories-for-nr_preps-writes.patch mm-damon-sysfs-implement-prep_action-file.patch mm-damon-sysfs-pass-preps-to-damon-core.patch selftests-damon-sysfssh-test-probe-prep-sysfs-files.patch docs-mm-damon-design-document-probe-preps.patch docs-admin-guide-mm-damon-usage-document-probe-preps-sysfs-files.patch docs-abi-damon-document-probe-prep-sysfs-files.patch mm-damon-tests-core-kunit-test-committing-psi-goal-to-psi-goal.patch mm-damon-core-handle-uninitialized-damos_quota_goal-last_psi_total.patch mm-damon-core-copy-nid-for-eligible_mem_bp-damos-quota-goal-commit.patch mm-damon-sysfs-set-next-refresh-jiffies-per-sysfs-context.patch mm-damon-tests-core-kunit-test-damon_commit_filter.patch mm-damon-tests-core-kunit-add-damon_commit_probes-test.patch selftests-damon-_damon_sysfs-implement-damonprobes.patch selftests-damon-drgn_dump_damon_status-dump-probes.patch selftests-damon-sysfspy-extend-commit-assertion-function-for-probes.patch selftests-damon-sysfspy-test-damon-probes.patch mm-damon-core-use-damon_nr_samples_per_aggr-for-max-merge-threshold.patch mm-damon-core-remove-debug-messages.patch mm-damon-core-remove-debug-messages-fix.patch mm-damon-vaddr-remove-a-debug-message.patch mm-damon-core-validate-number-of-probes-in-valid_probe_params.patch mm-damon-sysfs-remove-probes-number-validation.patch mm-damon-tests-core-kunit-extend-set_regions-test-for-error-case.patch mm-damon-tests-core-kunit-test-=0-size-damon_set_regions-inputs.patch mm-damon-tests-core-kunit-test-overlapping-ranges-for-set_regions.patch mm-damon-tests-core-kunit-test-damon_nr_samples_per_aggr.patch selftests-damon-sysfssh-test-hugepage_mem_bp-quota-goal.patch docs-mm-damon-maintainer-profile-update-ai-review-for-sashiko-replies.patch docs-abi-damon-recommend-subsystem-doc-instead-of-admin-guide.patch mm-damon-core-error-damos_commit_quota_goal-for-zero-target_value.patch revert-mm-damon-lru_sort-error-out-for-10000-active_mem_bp.patch revert-samples-damon-mtier-error-out-for-zero-quota-goal-target-values.patch mm-damon-core-handle-null-ctx-parameter-in-damon_call.patch mm-damon-core-set-ctx-call_controls_obsolete-in-damon_new_ctx.patch mm-damon-reclaim-remove-unnecessary-damon_call-param-validation.patch mm-damon-lru_sort-remove-unnecessary-damon_call-param-validation.patch