[merged mm-stable] memcg-add-mem_cgroup_uncharge_folios.patch removed from -mm tree

[merged mm-stable] memcg-add-mem_cgroup_uncharge_folios.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: memcg: add mem_cgroup_uncharge_folios()
has been removed from the -mm tree.  Its filename was
     memcg-add-mem_cgroup_uncharge_folios.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: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Subject: memcg: add mem_cgroup_uncharge_folios()
Date: Tue, 27 Feb 2024 17:42:39 +0000

Almost identical to mem_cgroup_uncharge_list(), except it takes a
folio_batch instead of a list_head.

Link: https://lkml.kernel.org/r/20240227174254.710559-6-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Ryan Roberts <ryan.roberts@arm.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/linux/memcontrol.h |   14 ++++++++++++--
 mm/memcontrol.c            |   13 +++++++++++++
 2 files changed, 25 insertions(+), 2 deletions(-)

--- a/include/linux/memcontrol.h~memcg-add-mem_cgroup_uncharge_folios
+++ a/include/linux/memcontrol.h
@@ -721,10 +721,16 @@ static inline void mem_cgroup_uncharge_l
 	__mem_cgroup_uncharge_list(page_list);
 }
 
-void mem_cgroup_cancel_charge(struct mem_cgroup *memcg, unsigned int nr_pages);
+void __mem_cgroup_uncharge_folios(struct folio_batch *folios);
+static inline void mem_cgroup_uncharge_folios(struct folio_batch *folios)
+{
+	if (mem_cgroup_disabled())
+		return;
+	__mem_cgroup_uncharge_folios(folios);
+}
 
+void mem_cgroup_cancel_charge(struct mem_cgroup *memcg, unsigned int nr_pages);
 void mem_cgroup_replace_folio(struct folio *old, struct folio *new);
-
 void mem_cgroup_migrate(struct folio *old, struct folio *new);
 
 /**
@@ -1299,6 +1305,10 @@ static inline void mem_cgroup_uncharge_l
 {
 }
 
+static inline void mem_cgroup_uncharge_folios(struct folio_batch *folios)
+{
+}
+
 static inline void mem_cgroup_cancel_charge(struct mem_cgroup *memcg,
 		unsigned int nr_pages)
 {
--- a/mm/memcontrol.c~memcg-add-mem_cgroup_uncharge_folios
+++ a/mm/memcontrol.c
@@ -33,6 +33,7 @@
 #include <linux/shmem_fs.h>
 #include <linux/hugetlb.h>
 #include <linux/pagemap.h>
+#include <linux/pagevec.h>
 #include <linux/vm_event_item.h>
 #include <linux/smp.h>
 #include <linux/page-flags.h>
@@ -7530,6 +7531,18 @@ void __mem_cgroup_uncharge_list(struct l
 	if (ug.memcg)
 		uncharge_batch(&ug);
 }
+
+void __mem_cgroup_uncharge_folios(struct folio_batch *folios)
+{
+	struct uncharge_gather ug;
+	unsigned int i;
+
+	uncharge_gather_clear(&ug);
+	for (i = 0; i < folios->nr; i++)
+		uncharge_folio(folios->folios[i], &ug);
+	if (ug.memcg)
+		uncharge_batch(&ug);
+}
 
 /**
  * mem_cgroup_replace_folio - Charge a folio's replacement.
_

Patches currently in -mm which might be from willy@infradead.org are

mm-separate-out-folio_flags-from-pageflags.patch
mm-remove-pagewaiters-pagesetwaiters-and-pageclearwaiters.patch
mm-remove-pageyoung-and-pageidle-definitions.patch
mm-add-__dump_folio.patch
mm-add-__dump_folio-fix.patch
mm-add-__dump_folio-fix-2.patch
mm-add-__dump_folio-fix-3.patch
mm-make-dump_page-take-a-const-argument.patch
mm-constify-testing-page-folio-flags.patch
mm-constify-more-page-folio-tests.patch
mm-remove-cast-from-page_to_nid.patch
mm-mempolicy-use-a-folio-in-do_mbind.patch