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 2F5DE4FDE48 for ; Wed, 16 Sep 2026 21:54:58 +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=1789595706; cv=none; b=p6R56/61dI79Cy/frQ9Y5mLm2sJSEE7ziVZ3SinSdF/OdSOudqTLKpq8bjrU4WHEeDJFNzlXq1Znwcy90CmwnSkUTepeLWkpXc1WY48VjAhtvGF9WJf1ZNFRuw3qz7ei0PHqgDjmwJQHxmOMP0NOcixHAA4ptk5XzdzaASCNdE4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789595706; c=relaxed/simple; bh=g7zofmBOQEzZo3xj8smEIfhED+exzyzBkDaj71tcjZ8=; h=Date:To:From:Subject:Message-Id; b=J1N/hC8taDVy5bNtDm2WSOeJvHQD0lWNwl9B5xH1RJVKXnRdV46SIIRcuYrIPH87n56ChFgkaxeXB9zVLwNI81ornBVEhijQL2Cw9QQeYux9+s4OHocxQnUce9c0JOanueMxi86heLVUw3EPO44B0S3cKH2Xz9K8AdEQut/sydg= 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=vGd2afJJ; 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="vGd2afJJ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 59FB11F00893; Wed, 16 Sep 2026 21:54:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1789595697; bh=EllpMn54bP1HywGYNm6vcPuoDAKww5Ow7ZtkQNEafXU=; h=Date:To:From:Subject; b=vGd2afJJr2fb5m7veDHqHiEIq66j0QFlmjEg/7fpqY89q7uDpRJO3ZyQhvR9homL9 vHLrb3ZNuAGlyMS1AgBOfZgaY6UvFs/nWj1rK/Zke6nY/4wPXyXXhWlrxo0XXfBW/+ YI2KKCJtI9a/oHZ+YHBdq5LESi+LV/W7Qilw1NdE= Date: Wed, 16 Sep 2026 14:54:56 -0700 To: mm-commits@vger.kernel.org,tz2294@columbia.edu,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-memcontrol-constify-mem_cgroup_swappiness-and-mem_cgroup_get_max.patch added to mm-new branch Message-Id: <20260916215457.59FB11F00893@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: mm: memcontrol: constify mem_cgroup_swappiness() and mem_cgroup_get_max() has been added to the -mm mm-new branch. Its filename is mm-memcontrol-constify-mem_cgroup_swappiness-and-mem_cgroup_get_max.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-memcontrol-constify-mem_cgroup_swappiness-and-mem_cgroup_get_max.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: Tal Zussman Subject: mm: memcontrol: constify mem_cgroup_swappiness() and mem_cgroup_get_max() Date: Tue, 15 Sep 2026 19:20:14 -0400 Both only read swappiness and the memory limits. Constify them. Link: https://lore.kernel.org/20260915-folio_memcg-const-v3-10-c239a6010b58@columbia.edu Signed-off-by: Tal Zussman Signed-off-by: Andrew Morton Acked-by: Muchun Song Acked-by: Shakeel Butt Acked-by: Lorenzo Stoakes (ARM) Cc: Axel Rasmussen Cc: Baolin Wang Cc: Baoquan He Cc: Barry Song Cc: Chris Li Cc: David Hildenbrand Cc: Johannes Weiner Cc: Kairui Song Cc: Kemeng Shi Cc: Liam R. Howlett Cc: Matthew Wilcox (Oracle) Cc: Michal Hocko Cc: Mike Rapoport Cc: Nhat Pham Cc: Roman Gushchin Cc: Suren Baghdasaryan Cc: Vlastimil Babka Cc: Wei Xu Cc: Yuanchu Xie --- include/linux/memcontrol.h | 4 ++-- mm/memcontrol.c | 2 +- mm/swap.h | 2 +- 3 files changed, 4 insertions(+), 4 deletions(-) --- a/include/linux/memcontrol.h~mm-memcontrol-constify-mem_cgroup_swappiness-and-mem_cgroup_get_max +++ a/include/linux/memcontrol.h @@ -941,7 +941,7 @@ static inline void mem_cgroup_handle_ove __mem_cgroup_handle_over_high(gfp_mask); } -unsigned long mem_cgroup_get_max(struct mem_cgroup *memcg); +unsigned long mem_cgroup_get_max(const struct mem_cgroup *memcg); void mem_cgroup_print_oom_context(const struct mem_cgroup *memcg, struct task_struct *p); @@ -1372,7 +1372,7 @@ unsigned long mem_cgroup_get_zone_lru_si return 0; } -static inline unsigned long mem_cgroup_get_max(struct mem_cgroup *memcg) +static inline unsigned long mem_cgroup_get_max(const struct mem_cgroup *memcg) { return 0; } --- a/mm/memcontrol.c~mm-memcontrol-constify-mem_cgroup_swappiness-and-mem_cgroup_get_max +++ a/mm/memcontrol.c @@ -1884,7 +1884,7 @@ void mem_cgroup_print_oom_meminfo(struct /* * Return the memory (and swap, if configured) limit for a memcg. */ -unsigned long mem_cgroup_get_max(struct mem_cgroup *memcg) +unsigned long mem_cgroup_get_max(const struct mem_cgroup *memcg) { unsigned long max = READ_ONCE(memcg->memory.max); --- a/mm/swap.h~mm-memcontrol-constify-mem_cgroup_swappiness-and-mem_cgroup_get_max +++ a/mm/swap.h @@ -82,7 +82,7 @@ enum swap_cluster_flags { extern int vm_swappiness; -static inline int mem_cgroup_swappiness(struct mem_cgroup *memcg) +static inline int mem_cgroup_swappiness(const struct mem_cgroup *memcg) { #ifdef CONFIG_MEMCG_V1 if (!cgroup_subsys_on_dfl(memory_cgrp_subsys) && _ Patches currently in -mm which might be from tz2294@columbia.edu are mm-page_io-convert-write-completion-handlers-to-folios.patch mm-remove-pagereclaim.patch mm-page_io-use-swap-entries-directly-in-zeromap-helpers.patch mm-page_io-rename-bio_associate_blkg_from_page.patch mm-page_io-refer-to-folios-in-swap_writeout-comments.patch mm-swap-rename-__swap_writepage-to-__swap_writeout.patch mm-remove-unused-mark_page_reserved.patch mm-remove-unused-totalram_pages_inc-and-totalram_pages_dec.patch mm-remove-pagewriteback.patch mm-swap-add-folio_swap_entry-and-folio_page_swap_entry.patch mm-swap-add-folio_swap_entry-and-folio_page_swap_entry-fix.patch mm-huge_memory-add-a-comment-to-the-open-coded-swap-entry.patch mm-rmap-use-folio_page_swap_entry-in-ttu_anon_swapbacked_folio.patch mm-zswap-use-folio_swap_entry-in-zswap_store_page.patch mm-swapfile-use-folio_page_swap_entry.patch arm64-mte-make-mte_save_tags-and-mte_restore_tags-static.patch arm64-mte-pass-the-swap-entry-to-mte_save_tags.patch mm-swap-remove-page_swap_entry.patch mm-memcontrol-take-a-const-folio-in-folio_memcg-and-friends.patch mm-memcontrol-constify-obj_cgroup_memcg-and-friends.patch mm-memcontrol-constify-the-lruvec-helpers.patch mm-page_io-take-a-const-folio-in-bio_associate_blkg_from_folio.patch mm-memcontrol-constify-the-mem_cgroup-accessors.patch mm-page_counter-constify-page_counter_read-and-page_counter_margin.patch mm-memcontrol-constify-the-reclaim-protection-helpers.patch mm-memcontrol-constify-the-memcg-and-lruvec-stat-readers.patch mm-memcontrol-constify-the-swap-accounting-helpers.patch mm-memcontrol-constify-mem_cgroup_swappiness-and-mem_cgroup_get_max.patch mm-memcontrol-constify-the-zswap-and-socket-pressure-helpers.patch