The patch titled
Subject: mm: remove PageKsm()
has been added to the -mm mm-unstable branch. Its filename is
mm-remove-pageksm.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-remove-pageksm.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: remove PageKsm()
Date: Wed, 2 Oct 2024 16:25:31 +0100
All callers have been converted to use folio_test_ksm() or
PageAnonNotKsm(), so we can remove this wrapper.
Link: https://lkml.kernel.org/r/20241002152533.1350629-6-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Alex Shi <alexs@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/page-flags.h | 7 +------
mm/internal.h | 2 +-
mm/ksm.c | 4 ++--
3 files changed, 4 insertions(+), 9 deletions(-)
--- a/include/linux/page-flags.h~mm-remove-pageksm
+++ a/include/linux/page-flags.h
@@ -725,13 +725,8 @@ static __always_inline bool folio_test_k
return ((unsigned long)folio->mapping & PAGE_MAPPING_FLAGS) ==
PAGE_MAPPING_KSM;
}
-
-static __always_inline bool PageKsm(const struct page *page)
-{
- return folio_test_ksm(page_folio(page));
-}
#else
-TESTPAGEFLAG_FALSE(Ksm, ksm)
+FOLIO_TEST_FLAG_FALSE(ksm)
#endif
u64 stable_page_flags(const struct page *page);
--- a/mm/internal.h~mm-remove-pageksm
+++ a/mm/internal.h
@@ -1311,7 +1311,7 @@ static inline bool gup_must_unshare(stru
smp_rmb();
/*
- * Note that PageKsm() pages cannot be exclusive, and consequently,
+ * Note that KSM pages cannot be exclusive, and consequently,
* cannot get pinned.
*/
return !PageAnonExclusive(page);
--- a/mm/ksm.c~mm-remove-pageksm
+++ a/mm/ksm.c
@@ -656,7 +656,7 @@ static int break_ksm(struct vm_area_stru
*
* VM_FAULT_SIGBUS could occur if we race with truncation of the
* backing file, which also invalidates anonymous pages: that's
- * okay, that truncation will have unmapped the PageKsm for us.
+ * okay, that truncation will have unmapped the KSM page for us.
*
* VM_FAULT_OOM: at the time of writing (late July 2009), setting
* aside mem_cgroup limits, VM_FAULT_OOM would only be set if the
@@ -1434,7 +1434,7 @@ out:
* try_to_merge_one_page - take two pages and merge them into one
* @vma: the vma that holds the pte pointing to page
* @page: the PageAnon page that we want to replace with kpage
- * @kpage: the PageKsm page that we want to map instead of page,
+ * @kpage: the KSM page that we want to map instead of page,
* or NULL the first time when we want to use page as kpage.
*
* This function returns 0 if the pages were merged, -EFAULT otherwise.
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
ksm-use-a-folio-in-try_to_merge_one_page.patch
ksm-convert-cmp_and_merge_page-to-use-a-folio.patch
ksm-convert-should_skip_rmap_item-to-take-a-folio.patch
mm-add-pageanonnotksm.patch
mm-remove-pageksm.patch
