mm/rmap: remove page_add_anon_rmap()
All users are gone, remove it and all traces.
Link: https://lkml.kernel.org/r/20231220224504.646757-22-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>
diff --git a/mm/rmap.c b/mm/rmap.c
index 7f380f5..87415bb 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -1270,7 +1270,7 @@ static void __page_check_anon_rmap(struct folio *folio, struct page *page,
* The page's anon-rmap details (mapping and index) are guaranteed to
* be set up correctly at this point.
*
- * We have exclusion against page_add_anon_rmap because the caller
+ * We have exclusion against folio_add_anon_rmap_*() because the caller
* always holds the page locked.
*
* We have exclusion against folio_add_new_anon_rmap because those pages
@@ -1283,29 +1283,6 @@ static void __page_check_anon_rmap(struct folio *folio, struct page *page,
page);
}
-/**
- * page_add_anon_rmap - add pte mapping to an anonymous page
- * @page: the page to add the mapping to
- * @vma: the vm area in which the mapping is added
- * @address: the user virtual address mapped
- * @flags: the rmap flags
- *
- * The caller needs to hold the pte lock, and the page must be locked in
- * the anon_vma case: to serialize mapping,index checking after setting,
- * and to ensure that PageAnon is not being upgraded racily to PageKsm
- * (but PageKsm is never downgraded to PageAnon).
- */
-void page_add_anon_rmap(struct page *page, struct vm_area_struct *vma,
- unsigned long address, rmap_t flags)
-{
- struct folio *folio = page_folio(page);
-
- if (likely(!(flags & RMAP_COMPOUND)))
- folio_add_anon_rmap_pte(folio, page, vma, address, flags);
- else
- folio_add_anon_rmap_pmd(folio, page, vma, address, flags);
-}
-
static __always_inline void __folio_add_anon_rmap(struct folio *folio,
struct page *page, int nr_pages, struct vm_area_struct *vma,
unsigned long address, rmap_t flags, enum rmap_level level)
@@ -1419,7 +1396,7 @@ void folio_add_anon_rmap_pmd(struct folio *folio, struct page *page,
* @vma: the vm area in which the mapping is added
* @address: the user virtual address mapped
*
- * Like page_add_anon_rmap() but must only be called on *new* folios.
+ * Like folio_add_anon_rmap_*() but must only be called on *new* folios.
* This means the inc-and-test can be bypassed.
* The folio does not have to be locked.
*
@@ -1479,7 +1456,7 @@ static __always_inline void __folio_add_file_rmap(struct folio *folio,
if (nr)
__lruvec_stat_mod_folio(folio, NR_FILE_MAPPED, nr);
- /* See comments in page_add_anon_rmap() */
+ /* See comments in folio_add_anon_rmap_*() */
if (!folio_test_large(folio))
mlock_vma_folio(folio, vma);
}
@@ -1593,7 +1570,7 @@ void page_remove_rmap(struct page *page, struct vm_area_struct *vma,
/*
* It would be tidy to reset folio_test_anon mapping when fully
- * unmapped, but that might overwrite a racing page_add_anon_rmap
+ * unmapped, but that might overwrite a racing folio_add_anon_rmap_*()
* which increments mapcount after us but sets mapping before us:
* so leave the reset to free_pages_prepare, and remember that
* it's only reliable while mapped.
