[merged mm-stable] mm-page_io-take-a-const-folio-in-bio_associate_blkg_from_folio.patch removed from -mm tree

[merged mm-stable] mm-page_io-take-a-const-folio-in-bio_associate_blkg_from_folio.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm/page_io: take a const folio in bio_associate_blkg_from_folio()
has been removed from the -mm tree.  Its filename was
     mm-page_io-take-a-const-folio-in-bio_associate_blkg_from_folio.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Tal Zussman <tz2294@columbia.edu>
Subject: mm/page_io: take a const folio in bio_associate_blkg_from_folio()
Date: Tue, 15 Sep 2026 19:20:08 -0400

bio_associate_blkg_from_folio() and its helpers only read from the folio. 
Constify their folio arguments.

Link: https://lore.kernel.org/20260915-folio_memcg-const-v3-4-c239a6010b58@columbia.edu
Signed-off-by: Tal Zussman <tz2294@columbia.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Muchun Song <muchun.song@linux.dev>
Acked-by: Shakeel Butt <shakeel.butt@linux.dev>
Acked-by: Lorenzo Stoakes (ARM) <ljs@kernel.org>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Baoquan He <baoquan.he@linux.dev>
Cc: Barry Song <baohua@kernel.org>
Cc: Chris Li <chrisl@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kairui Song <kasong@tencent.com>
Cc: Kemeng Shi <shikemeng@huaweicloud.com>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Nhat Pham <nphamcs@gmail.com>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: Wei Xu <weixugc@google.com>
Cc: Yuanchu Xie <yuanchu@google.com>
---

 mm/page_io.c |   14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

--- a/mm/page_io.c~mm-page_io-take-a-const-folio-in-bio_associate_blkg_from_folio
+++ a/mm/page_io.c
@@ -256,12 +256,13 @@ out_unlock:
 }
 
 #if defined(CONFIG_MEMCG) && defined(CONFIG_BLK_CGROUP)
-static struct cgroup_subsys_state *folio_memcg_blkg_css(struct folio *folio)
+static struct cgroup_subsys_state *folio_memcg_blkg_css(const struct folio *folio)
 {
 	return cgroup_e_css(folio_memcg(folio)->css.cgroup, &io_cgrp_subsys);
 }
 
-static bool folio_blkg_can_merge(struct folio *folio, struct folio *prev_folio)
+static bool folio_blkg_can_merge(const struct folio *folio,
+				 const struct folio *prev_folio)
 {
 	bool can_merge = true;
 
@@ -277,7 +278,8 @@ static bool folio_blkg_can_merge(struct
 	return can_merge;
 }
 
-static void bio_associate_blkg_from_folio(struct bio *bio, struct folio *folio)
+static void bio_associate_blkg_from_folio(struct bio *bio,
+					  const struct folio *folio)
 {
 	struct cgroup_subsys_state *css;
 
@@ -294,11 +296,13 @@ static void bio_associate_blkg_from_foli
 		css_put(css);
 }
 #else
-static bool folio_blkg_can_merge(struct folio *folio, struct folio *prev_folio)
+static bool folio_blkg_can_merge(const struct folio *folio,
+				 const struct folio *prev_folio)
 {
 	return true;
 }
-static void bio_associate_blkg_from_folio(struct bio *bio, struct folio *folio)
+static void bio_associate_blkg_from_folio(struct bio *bio,
+					  const struct folio *folio)
 {
 }
 #endif /* CONFIG_MEMCG && CONFIG_BLK_CGROUP */
_

Patches currently in -mm which might be from tz2294@columbia.edu are