The quilt patch titled
Subject: mm/rmap: remove RMAP_COMPOUND
has been removed from the -mm tree. Its filename was
mm-rmap-remove-rmap_compound.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: David Hildenbrand <david@xxxxxxxxxx>
Subject: mm/rmap: remove RMAP_COMPOUND
Date: Wed, 20 Dec 2023 23:44:46 +0100
No longer used, let's remove it and clarify RMAP_NONE/RMAP_EXCLUSIVE a
bit.
Link: https://lkml.kernel.org/r/20231220224504.646757-23-david@xxxxxxxxxx
Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Muchun Song <muchun.song@xxxxxxxxx>
Cc: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Cc: Peter Xu <peterx@xxxxxxxxxx>
Cc: Ryan Roberts <ryan.roberts@xxxxxxx>
Cc: Yin Fengwei <fengwei.yin@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/rmap.h | 12 +++---------
mm/rmap.c | 2 --
2 files changed, 3 insertions(+), 11 deletions(-)
--- a/include/linux/rmap.h~mm-rmap-remove-rmap_compound
+++ a/include/linux/rmap.h
@@ -177,21 +177,15 @@ struct anon_vma *folio_get_anon_vma(stru
typedef int __bitwise rmap_t;
/*
- * No special request: if the page is a subpage of a compound page, it is
- * mapped via a PTE. The mapped (sub)page is possibly shared between processes.
+ * No special request: A mapped anonymous (sub)page is possibly shared between
+ * processes.
*/
#define RMAP_NONE ((__force rmap_t)0)
-/* The (sub)page is exclusive to a single process. */
+/* The anonymous (sub)page is exclusive to a single process. */
#define RMAP_EXCLUSIVE ((__force rmap_t)BIT(0))
/*
- * The compound page is not mapped via PTEs, but instead via a single PMD and
- * should be accounted accordingly.
- */
-#define RMAP_COMPOUND ((__force rmap_t)BIT(1))
-
-/*
* Internally, we're using an enum to specify the granularity. We make the
* compiler emit specialized code for each granularity.
*/
--- a/mm/rmap.c~mm-rmap-remove-rmap_compound
+++ a/mm/rmap.c
@@ -2662,8 +2662,6 @@ void rmap_walk_locked(struct folio *foli
* The following two functions are for anonymous (private mapped) hugepages.
* Unlike common anonymous pages, anonymous hugepages have no accounting code
* and no lru code, because we handle hugepages differently from common pages.
- *
- * RMAP_COMPOUND is ignored.
*/
void hugetlb_add_anon_rmap(struct folio *folio, struct vm_area_struct *vma,
unsigned long address, rmap_t flags)
_
Patches currently in -mm which might be from david@xxxxxxxxxx are
