The quilt patch titled
Subject: mm/page_alloc: move set_page_refcounted() to callers of __alloc_pages_may_oom()
has been removed from the -mm tree. Its filename was
mm-page_alloc-move-set_page_refcounted-to-callers-of-__alloc_pages_may_oom.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@xxxxxxxxxxxxx>
Subject: mm/page_alloc: move set_page_refcounted() to callers of __alloc_pages_may_oom()
Date: Mon, 25 Nov 2024 21:01:40 +0000
In preparation for allocating frozen pages, stop initialising the page
refcount in __alloc_pages_may_oom().
Link: https://lkml.kernel.org/r/20241125210149.2976098-9-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Reviewed-by: Zi Yan <ziy@xxxxxxxxxx>
Reviewed-by: Vlastimil Babka <vbabka@xxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Hyeonggon Yoo <42.hyeyoo@xxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Cc: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Cc: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Cc: William Kucharski <william.kucharski@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_alloc.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)
--- a/mm/page_alloc.c~mm-page_alloc-move-set_page_refcounted-to-callers-of-__alloc_pages_may_oom
+++ a/mm/page_alloc.c
@@ -3604,10 +3604,8 @@ __alloc_pages_may_oom(gfp_t gfp_mask, un
page = get_page_from_freelist((gfp_mask | __GFP_HARDWALL) &
~__GFP_DIRECT_RECLAIM, order,
ALLOC_WMARK_HIGH|ALLOC_CPUSET, ac);
- if (page) {
- set_page_refcounted(page);
+ if (page)
goto out;
- }
/* Coredumps can quickly deplete all memory reserves */
if (current->flags & PF_DUMPCORE)
@@ -3652,8 +3650,6 @@ __alloc_pages_may_oom(gfp_t gfp_mask, un
if (gfp_mask & __GFP_NOFAIL)
page = __alloc_pages_cpuset_fallback(gfp_mask, order,
ALLOC_NO_WATERMARKS, ac);
- if (page)
- set_page_refcounted(page);
}
out:
mutex_unlock(&oom_lock);
@@ -4437,8 +4433,10 @@ retry:
/* Reclaim has failed us, start killing things */
page = __alloc_pages_may_oom(gfp_mask, order, ac, &did_some_progress);
- if (page)
+ if (page) {
+ set_page_refcounted(page);
goto got_pg;
+ }
/* Avoid allocations with no watermarks from looping endlessly */
if (tsk_is_oom_victim(current) &&
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
mm-remove-pagetranstail.patch
