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authorDavid Hildenbrand <david@redhat.com>2023-12-20 23:44:46 +0100
committerAndrew Morton <akpm@linux-foundation.org>2023-12-29 11:58:52 -0800
commit0cae959e3abf19ba62805f6e6a8b42b6cd9ed3e3 (patch)
tree210c50421f554f13a413eeddc58f90673a10ce69 /include
parent84f0169e6c8a613012722e0d63302f9da4a72099 (diff)
mm/rmap: remove RMAP_COMPOUND
No longer used, let's remove it and clarify RMAP_NONE/RMAP_EXCLUSIVE a bit. Link: https://lkml.kernel.org/r/20231220224504.646757-23-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Muchun Song <muchun.song@linux.dev> Cc: Muchun Song <songmuchun@bytedance.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Yin Fengwei <fengwei.yin@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/rmap.h12
1 files changed, 3 insertions, 9 deletions
diff --git a/include/linux/rmap.h b/include/linux/rmap.h
index fe7b5a8b0e75..bf6cb79aa7a0 100644
--- a/include/linux/rmap.h
+++ b/include/linux/rmap.h
@@ -177,21 +177,15 @@ struct anon_vma *folio_get_anon_vma(struct folio *folio);
typedef int __bitwise rmap_t;
/*
- * No special request: if the page is a subpage of a compound page, it is
- * mapped via a PTE. The mapped (sub)page is possibly shared between processes.
+ * No special request: A mapped anonymous (sub)page is possibly shared between
+ * processes.
*/
#define RMAP_NONE ((__force rmap_t)0)
-/* The (sub)page is exclusive to a single process. */
+/* The anonymous (sub)page is exclusive to a single process. */
#define RMAP_EXCLUSIVE ((__force rmap_t)BIT(0))
/*
- * The compound page is not mapped via PTEs, but instead via a single PMD and
- * should be accounted accordingly.
- */
-#define RMAP_COMPOUND ((__force rmap_t)BIT(1))
-
-/*
* Internally, we're using an enum to specify the granularity. We make the
* compiler emit specialized code for each granularity.
*/