The patch titled
Subject: mm/ksm: replace set_page_stable_node by folio_set_stable_node
has been added to the -mm mm-unstable branch. Its filename is
mm-ksm-replace-set_page_stable_node-by-folio_set_stable_node.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-ksm-replace-set_page_stable_node-by-folio_set_stable_node.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: "Alex Shi (tencent)" <alexs@xxxxxxxxxx>
Subject: mm/ksm: replace set_page_stable_node by folio_set_stable_node
Date: Thu, 11 Apr 2024 14:17:11 +0800
Only single page could be reached where we set stable node after write
protect, so use folio converted func to replace page's. And remove the
unused func set_page_stable_node().
Link: https://lkml.kernel.org/r/20240411061713.1847574-11-alexs@xxxxxxxxxx
Signed-off-by: Alex Shi (tencent) <alexs@xxxxxxxxxx>
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
Cc: Izik Eidus <izik.eidus@xxxxxxxxxxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Chris Wright <chrisw@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/ksm.c | 12 +++---------
1 file changed, 3 insertions(+), 9 deletions(-)
--- a/mm/ksm.c~mm-ksm-replace-set_page_stable_node-by-folio_set_stable_node
+++ a/mm/ksm.c
@@ -1094,17 +1094,11 @@ static inline struct ksm_stable_node *pa
return folio_stable_node(page_folio(page));
}
-static inline void set_page_stable_node(struct page *page,
- struct ksm_stable_node *stable_node)
-{
- VM_BUG_ON_PAGE(PageAnon(page) && PageAnonExclusive(page), page);
- page->mapping = (void *)((unsigned long)stable_node | PAGE_MAPPING_KSM);
-}
-
static inline void folio_set_stable_node(struct folio *folio,
struct ksm_stable_node *stable_node)
{
- set_page_stable_node(&folio->page, stable_node);
+ VM_WARN_ON_FOLIO(folio_test_anon(folio) && PageAnonExclusive(&folio->page), folio);
+ folio->mapping = (void *)((unsigned long)stable_node | PAGE_MAPPING_KSM);
}
#ifdef CONFIG_SYSFS
@@ -1519,7 +1513,7 @@ static int try_to_merge_one_page(struct
* PageAnon+anon_vma to PageKsm+NULL stable_node:
* stable_tree_insert() will update stable_node.
*/
- set_page_stable_node(page, NULL);
+ folio_set_stable_node(page_folio(page), NULL);
mark_page_accessed(page);
/*
* Page reclaim just frees a clean page with no dirty
_
Patches currently in -mm which might be from alexs@xxxxxxxxxx are
mm-ksm-add-ksm_get_folio.patch
mm-ksm-use-folio-in-remove_rmap_item_from_tree.patch
mm-ksm-add-folio_set_stable_node.patch
mm-ksm-use-folio-in-remove_stable_node.patch
mm-ksm-use-folio-in-stable_node_dup.patch
mm-ksm-use-ksm_get_folio-in-scan_get_next_rmap_item.patch
mm-ksm-use-folio-in-write_protect_page.patch
mm-ksm-convert-chain-series-funcs-and-replace-get_ksm_page.patch
mm-ksm-replace-set_page_stable_node-by-folio_set_stable_node.patch
