+ mm-page_alloc-move-set_page_refcounted-to-callers-of-__alloc_pages_direct_compact.patch added to mm-unstable branch

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The patch titled
     Subject: mm/page_alloc: move set_page_refcounted() to callers of __alloc_pages_direct_compact()
has been added to the -mm mm-unstable branch.  Its filename is
     mm-page_alloc-move-set_page_refcounted-to-callers-of-__alloc_pages_direct_compact.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-page_alloc-move-set_page_refcounted-to-callers-of-__alloc_pages_direct_compact.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: mm/page_alloc: move set_page_refcounted() to callers of __alloc_pages_direct_compact()
Date: Mon, 25 Nov 2024 21:01:41 +0000

In preparation for allocating frozen pages, stop initialising the page
refcount in __alloc_pages_direct_compact().

Link: https://lkml.kernel.org/r/20241125210149.2976098-10-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Hyeonggon Yoo <42.hyeyoo@xxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxxx>
Cc: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Cc: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Cc: William Kucharski <william.kucharski@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 mm/page_alloc.c |    9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

--- a/mm/page_alloc.c~mm-page_alloc-move-set_page_refcounted-to-callers-of-__alloc_pages_direct_compact
+++ a/mm/page_alloc.c
@@ -3704,7 +3704,6 @@ __alloc_pages_direct_compact(gfp_t gfp_m
 	if (page) {
 		struct zone *zone = page_zone(page);
 
-		set_page_refcounted(page);
 		zone->compact_blockskip_flush = false;
 		compaction_defer_reset(zone, order, true);
 		count_vm_event(COMPACTSUCCESS);
@@ -4306,8 +4305,10 @@ restart:
 						alloc_flags, ac,
 						INIT_COMPACT_PRIORITY,
 						&compact_result);
-		if (page)
+		if (page) {
+			set_page_refcounted(page);
 			goto got_pg;
+		}
 
 		/*
 		 * Checks for costly allocations with __GFP_NORETRY, which
@@ -4389,8 +4390,10 @@ retry:
 	/* Try direct compaction and then allocating */
 	page = __alloc_pages_direct_compact(gfp_mask, order, alloc_flags, ac,
 					compact_priority, &compact_result);
-	if (page)
+	if (page) {
+		set_page_refcounted(page);
 		goto got_pg;
+	}
 
 	/* Do not loop if specifically requested */
 	if (gfp_mask & __GFP_NORETRY)
_

Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are

mm-page_alloc-cache-page_zone-result-in-free_unref_page.patch
mm-make-alloc_pages_mpol-static.patch
mm-page_alloc-export-free_frozen_pages-instead-of-free_unref_page.patch
mm-page_alloc-move-set_page_refcounted-to-callers-of-post_alloc_hook.patch
mm-page_alloc-move-set_page_refcounted-to-callers-of-prep_new_page.patch
mm-page_alloc-move-set_page_refcounted-to-callers-of-get_page_from_freelist.patch
mm-page_alloc-move-set_page_refcounted-to-callers-of-__alloc_pages_cpuset_fallback.patch
mm-page_alloc-move-set_page_refcounted-to-callers-of-__alloc_pages_may_oom.patch
mm-page_alloc-move-set_page_refcounted-to-callers-of-__alloc_pages_direct_compact.patch
mm-page_alloc-move-set_page_refcounted-to-callers-of-__alloc_pages_direct_reclaim.patch
mm-page_alloc-move-set_page_refcounted-to-callers-of-__alloc_pages_slowpath.patch
mm-page_alloc-move-set_page_refcounted-to-end-of-__alloc_pages.patch
mm-page_alloc-add-__alloc_frozen_pages.patch
mm-mempolicy-add-alloc_frozen_pages.patch
slab-allocate-frozen-pages.patch





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