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 8C31F356755 for ; Wed, 1 Jul 2026 03:36:09 +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=1782876970; cv=none; b=aSGEu9LkYt9WJFeJ/dd5q0C+V0s9gveScVGeuW7CmqaT0VEoOiWo9l5qhUoJj73fdB9humMzbjD81SGzGuRT2+FpCwsXAEQ5T730OgYIwQEXCv08srMXBknn5E7sP3woa7uuDZGbERKpndEsgYfK+XkaUAVDBm8NDmAuP1skYEQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782876970; c=relaxed/simple; bh=LodM4gMHH5APeGC8tHRU6sX/bvT1hJSOJUQ23spXIao=; h=Date:To:From:Subject:Message-Id; b=ZgleNXD2QNZA3d4ojrgb495QKjQJJi3O7GrhrdcnhaFWICcYaG+IsoywbPPmTG8rxR2/7XaE+wg5uONNGE9eKFNkVxxw/yyvQrPIN2aXKqxjSwUbchgG6LKF/ANbvByGggMtgNXhun6oRV8g3F4Y0xf1VJG3ORgF7vhRaq2a4cw= 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=quzAzfh3; 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="quzAzfh3" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2A47D1F00A3A; Wed, 1 Jul 2026 03:36:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1782876969; bh=/PHoO9iYr60nPCIicD3GQc2LooqB06hgfC15togYJkw=; h=Date:To:From:Subject; b=quzAzfh3caeFmtLHwRWUa6JScwgMrAUmnm+ThMh1F90uho3pCYu4Ql+6P3eYXpALy qI28B1NX4WRfdOJOHDXbTo33SfF8QrMy5183pvvZ8dlVDs3rhewqCZulJ1o1nT/uwO q72R3mBV6yeprPcEn6zXaomZ4KL9tGszfo8EAzH0= Date: Tue, 30 Jun 2026 20:36:08 -0700 To: mm-commits@vger.kernel.org,ye.liu@linux.dev,akpm@linux-foundation.org From: Andrew Morton Subject: [to-be-updated] mm-page_owner-add-mr_never-to-enum-migrate_reason-and-use-it-for-last_migrate_reason.patch removed from -mm tree Message-Id: <20260701033609.2A47D1F00A3A@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/page_owner: add MR_NEVER to enum migrate_reason and use it for last_migrate_reason has been removed from the -mm tree. Its filename was mm-page_owner-add-mr_never-to-enum-migrate_reason-and-use-it-for-last_migrate_reason.patch This patch was dropped because an updated version will be issued ------------------------------------------------------ From: Ye Liu Subject: mm/page_owner: add MR_NEVER to enum migrate_reason and use it for last_migrate_reason Date: Tue, 30 Jun 2026 09:53:19 +0800 The last_migrate_reason field uses -1 as a sentinel value to mean "no migration has happened". Replace the four bare -1 occurrences by adding a proper MR_NEVER member to enum migrate_reason, defining a corresponding "never_migrated" string in the MIGRATE_REASON trace macro, and removing the local MIGRATE_REASON_NONE define. No functional change. Link: https://lore.kernel.org/20260630015331.147174-3-ye.liu@linux.dev Signed-off-by: Ye Liu Reviewed-by: Zi Yan Cc: Brendan Jackman Cc: Johannes Weiner Cc: Michal Hocko Cc: Suren Baghdasaryan Cc: Vlastimil Babka (SUSE) Signed-off-by: Andrew Morton --- include/linux/migrate_mode.h | 1 + include/trace/events/migrate.h | 3 ++- mm/page_owner.c | 8 ++++---- 3 files changed, 7 insertions(+), 5 deletions(-) --- a/include/linux/migrate_mode.h~mm-page_owner-add-mr_never-to-enum-migrate_reason-and-use-it-for-last_migrate_reason +++ a/include/linux/migrate_mode.h @@ -25,6 +25,7 @@ enum migrate_reason { MR_LONGTERM_PIN, MR_DEMOTION, MR_DAMON, + MR_NEVER, /* page has never been migrated */ MR_TYPES }; --- a/include/trace/events/migrate.h~mm-page_owner-add-mr_never-to-enum-migrate_reason-and-use-it-for-last_migrate_reason +++ a/include/trace/events/migrate.h @@ -23,7 +23,8 @@ EM( MR_CONTIG_RANGE, "contig_range") \ EM( MR_LONGTERM_PIN, "longterm_pin") \ EM( MR_DEMOTION, "demotion") \ - EMe(MR_DAMON, "damon") + EM( MR_DAMON, "damon") \ + EMe(MR_NEVER, "never_migrated") /* * First define the enums in the above macros to be exported to userspace --- a/mm/page_owner.c~mm-page_owner-add-mr_never-to-enum-migrate_reason-and-use-it-for-last_migrate_reason +++ a/mm/page_owner.c @@ -339,7 +339,7 @@ noinline void __set_page_owner(struct pa depot_stack_handle_t handle; handle = save_stack(gfp_mask); - __update_page_owner_handle(page, handle, order, gfp_mask, -1, + __update_page_owner_handle(page, handle, order, gfp_mask, MR_NEVER, ts_nsec, current->pid, current->tgid, current->comm); inc_stack_record_count(handle, gfp_mask, 1 << order); @@ -596,7 +596,7 @@ print_page_owner(char __user *buf, size_ if (ret >= count) goto err; - if (page_owner->last_migrate_reason != -1) { + if (page_owner->last_migrate_reason != MR_NEVER) { ret += scnprintf(kbuf + ret, count - ret, "Page has been migrated, last migrate reason: %s\n", migrate_reason_names[page_owner->last_migrate_reason]); @@ -667,7 +667,7 @@ void __dump_page_owner(const struct page stack_depot_print(handle); } - if (page_owner->last_migrate_reason != -1) + if (page_owner->last_migrate_reason != MR_NEVER) pr_alert("page has been migrated, last migrate reason: %s\n", migrate_reason_names[page_owner->last_migrate_reason]); page_ext_put(page_ext); @@ -826,7 +826,7 @@ static void init_pages_in_zone(struct zo /* Found early allocated page */ __update_page_owner_handle(page, early_handle, 0, 0, - -1, local_clock(), current->pid, + MR_NEVER, local_clock(), current->pid, current->tgid, current->comm); count++; ext_put_continue: _ Patches currently in -mm which might be from ye.liu@linux.dev are a.patch mm-use-enum-migrate_reason-instead-of-int-for-migration-reason-parameters.patch mm-page_owner-hoist-config_memcg-to-function-level-for-print_page_owner_memcg.patch mm-page_owner-add-missing-newline-to-count_threshold-format-string.patch mm-page_owner-move-free_ts_nsec-output-to-free-section-in-__dump_page_owner.patch mm-page_owner-drop-redundant-page_owner-prefix-from-static-symbols.patch mm-page_owner-clamp-skip_buddy_pages-pfn-advance-at-max_order_nr_pages-boundary.patch mm-page_owner-use-memcg_data-snapshot-instead-of-pagememcgkmem-to-avoid-toctou-vm_bug_on.patch