[PATCH v1 22/29] mm/page-flags: rename PAGE_MAPPING_MOVABLE to PAGE_MAPPING_ANON_KSM

David Hildenbrand
2025-06-30T13:01:29Z

KSM is the only remaining user, let's rename the flag. While at it,
adjust to remaining page -> folio in the doc.

Reviewed-by: Zi Yan <ziy@nvidia.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
---
include/linux/page-flags.h | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index aa48b05536bca..abed972e902e1 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -697,10 +697,10 @@ PAGEFLAG_FALSE(VmemmapSelfHosted, vmemmap_self_hosted)
* folio->mapping points to its anon_vma, not to a struct address_space;
* with the PAGE_MAPPING_ANON bit set to distinguish it. See rmap.h.
*
- * On an anonymous page in a VM_MERGEABLE area, if CONFIG_KSM is enabled,
- * the PAGE_MAPPING_MOVABLE bit may be set along with the PAGE_MAPPING_ANON
+ * On an anonymous folio in a VM_MERGEABLE area, if CONFIG_KSM is enabled,
+ * the PAGE_MAPPING_ANON_KSM bit may be set along with the PAGE_MAPPING_ANON
* bit; and then folio->mapping points, not to an anon_vma, but to a private
- * structure which KSM associates with that merged page. See ksm.h.
+ * structure which KSM associates with that merged folio. See ksm.h.
*
* Please note that, confusingly, "folio_mapping" refers to the inode
* address_space which maps the folio from disk; whereas "folio_mapped"
@@ -714,9 +714,9 @@ PAGEFLAG_FALSE(VmemmapSelfHosted, vmemmap_self_hosted)
* See mm/slab.h.
*/
#define PAGE_MAPPING_ANON 0x1
-#define PAGE_MAPPING_MOVABLE 0x2
-#define PAGE_MAPPING_KSM (PAGE_MAPPING_ANON | PAGE_MAPPING_MOVABLE)
-#define PAGE_MAPPING_FLAGS (PAGE_MAPPING_ANON | PAGE_MAPPING_MOVABLE)
+#define PAGE_MAPPING_ANON_KSM 0x2
+#define PAGE_MAPPING_KSM (PAGE_MAPPING_ANON | PAGE_MAPPING_ANON_KSM)
+#define PAGE_MAPPING_FLAGS (PAGE_MAPPING_ANON | PAGE_MAPPING_ANON_KSM)

static __always_inline bool folio_mapping_flags(const struct folio *folio)
{
--
2.49.0