+ mm-remove-free_unref_page_list.patch added to mm-unstable branch

+ mm-remove-free_unref_page_list.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: mm: remove free_unref_page_list()
has been added to the -mm mm-unstable branch.  Its filename is
     mm-remove-free_unref_page_list.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-remove-free_unref_page_list.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@infradead.org>
Subject: mm: remove free_unref_page_list()
Date: Tue, 27 Feb 2024 17:42:48 +0000

All callers now use free_unref_folios() so we can delete this function.

Link: https://lkml.kernel.org/r/20240227174254.710559-15-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>
---

 mm/internal.h   |    1 -
 mm/page_alloc.c |   18 ------------------
 2 files changed, 19 deletions(-)

--- a/mm/internal.h~mm-remove-free_unref_page_list
+++ a/mm/internal.h
@@ -543,7 +543,6 @@ extern int user_min_free_kbytes;
 
 void free_unref_page(struct page *page, unsigned int order);
 void free_unref_folios(struct folio_batch *fbatch);
-void free_unref_page_list(struct list_head *list);
 
 extern void zone_pcp_reset(struct zone *zone);
 extern void zone_pcp_disable(struct zone *zone);
--- a/mm/page_alloc.c~mm-remove-free_unref_page_list
+++ a/mm/page_alloc.c
@@ -2605,24 +2605,6 @@ void free_unref_folios(struct folio_batc
 	folio_batch_reinit(folios);
 }
 
-void free_unref_page_list(struct list_head *list)
-{
-	struct folio_batch fbatch;
-
-	folio_batch_init(&fbatch);
-	while (!list_empty(list)) {
-		struct folio *folio = list_first_entry(list, struct folio, lru);
-
-		list_del(&folio->lru);
-		if (folio_batch_add(&fbatch, folio) > 0)
-			continue;
-		free_unref_folios(&fbatch);
-	}
-
-	if (fbatch.nr)
-		free_unref_folios(&fbatch);
-}
-
 /*
  * split_page takes a non-compound higher-order page, and splits it into
  * n (1<<order) sub-pages: page[0..n]
_

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

mm-support-order-1-folios-in-the-page-cache.patch
mm-make-folios_put-the-basis-of-release_pages.patch
mm-convert-free_unref_page_list-to-use-folios.patch
mm-add-free_unref_folios.patch
mm-use-folios_put-in-__folio_batch_release.patch
memcg-add-mem_cgroup_uncharge_folios.patch
mm-remove-use-of-folio-list-from-folios_put.patch
mm-use-free_unref_folios-in-put_pages_list.patch
mm-use-__page_cache_release-in-folios_put.patch
mm-handle-large-folios-in-free_unref_folios.patch
mm-allow-non-hugetlb-large-folios-to-be-batch-processed.patch
mm-free-folios-in-a-batch-in-shrink_folio_list.patch
mm-free-folios-directly-in-move_folios_to_lru.patch
memcg-remove-mem_cgroup_uncharge_list.patch
mm-remove-free_unref_page_list.patch
mm-remove-lru_to_page.patch
mm-convert-free_pages_and_swap_cache-to-use-folios_put.patch
mm-use-a-folio-in-__collapse_huge_page_copy_succeeded.patch
mm-convert-free_swap_cache-to-take-a-folio.patch