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 69E3643D515 for ; Wed, 16 Sep 2026 21:54:39 +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=1789595691; cv=none; b=YkqMMamJZpcsBl1sRuOGT2R92o9aaZJ6a7273A2C0JIVDBwzhIJq3BFhP/C2tchbiaj+orYxp7FmfdMkv5UWorpEil8Anpoxq+78NfJtVsH/e4LQKakDYb1NPU9S1b2aVvaLAKe4rlU8l4ZuYMLHZwIpT7NWyKFxueQInAyrGYI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789595691; c=relaxed/simple; bh=+mGoSvAXcqLiGGew9M4kk8Zzjs2UiKK6H5FhasytaEM=; h=Date:To:From:Subject:Message-Id; b=IntHxU8zyEL5x2x54ziaF0q3U5nTUejkezmUdyJIvyjoWpxE1hq/DnUsTg8dp6GNx9bfajB4VB67QzZLnYOVPJW1RChM9xJxqq8+W2cgbI/z9U5ABv7QEI4+L4Ke8tQXz+p17sfIzh4VqIBnVJaH+JtOxG0l1umnJXrtoqjURqs= 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=aDkYgM7L; 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="aDkYgM7L" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 214241F000FF; Wed, 16 Sep 2026 21:54:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1789595676; bh=XuJOHHxksERcQvcOFr3jf5nPGMDDxvCQT5CQ4g01cBU=; h=Date:To:From:Subject; b=aDkYgM7LOsIYnWY202TUVR9cxS6CbF8piXS/dmCTBsPhLhCYs4MO1/gwDSbFRWH2W PJb6/s7bVHs8pylD7fKkDAZ8yGMwURGcoxNxHXsFcZHlOCrjkHIUnwOvzN+k3TpQMs wHeiZ9OjfD+AMMvFF5hIdweUZiK2JuAw1+Utb/v4= Date: Wed, 16 Sep 2026 14:54:35 -0700 To: mm-commits@vger.kernel.org,tz2294@columbia.edu,akpm@linux-foundation.org From: Andrew Morton Subject: + mm-memcontrol-constify-obj_cgroup_memcg-and-friends.patch added to mm-new branch Message-Id: <20260916215436.214241F000FF@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 obj_cgroup_memcg() and friends has been added to the -mm mm-new branch. Its filename is mm-memcontrol-constify-obj_cgroup_memcg-and-friends.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-obj_cgroup_memcg-and-friends.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 obj_cgroup_memcg() and friends Date: Tue, 15 Sep 2026 19:20:06 -0400 obj_cgroup_memcg() and get_mem_cgroup_from_objcg() only read from the objcg. Constify them. Link: https://lore.kernel.org/20260915-folio_memcg-const-v3-2-c239a6010b58@columbia.edu Signed-off-by: Tal Zussman Signed-off-by: Andrew Morton Reviewed-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 | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) --- a/include/linux/memcontrol.h~mm-memcontrol-constify-obj_cgroup_memcg-and-friends +++ a/include/linux/memcontrol.h @@ -396,7 +396,7 @@ enum objext_flags { * * The caller must ensure that the returned memcg won't be released. */ -static inline struct mem_cgroup *obj_cgroup_memcg(struct obj_cgroup *objcg) +static inline struct mem_cgroup *obj_cgroup_memcg(const struct obj_cgroup *objcg) { lockdep_assert_once(rcu_read_lock_held() || lockdep_is_held(&cgroup_mutex)); return objcg ? READ_ONCE(objcg->memcg) : NULL; @@ -505,7 +505,7 @@ static inline struct mem_cgroup *page_me return folio_memcg_check((const struct folio *)page); } -static inline struct mem_cgroup *get_mem_cgroup_from_objcg(struct obj_cgroup *objcg) +static inline struct mem_cgroup *get_mem_cgroup_from_objcg(const struct obj_cgroup *objcg) { struct mem_cgroup *memcg; @@ -1075,7 +1075,7 @@ void mem_cgroup_flush_workqueue(void); extern int mem_cgroup_init(void); #else /* CONFIG_MEMCG */ -static inline struct mem_cgroup *obj_cgroup_memcg(struct obj_cgroup *objcg) +static inline struct mem_cgroup *obj_cgroup_memcg(const struct obj_cgroup *objcg) { return NULL; } @@ -1104,7 +1104,7 @@ static inline struct mem_cgroup *page_me return NULL; } -static inline struct mem_cgroup *get_mem_cgroup_from_objcg(struct obj_cgroup *objcg) +static inline struct mem_cgroup *get_mem_cgroup_from_objcg(const struct obj_cgroup *objcg) { return NULL; } _ 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