Commit a13d0964 authored by David Hildenbrand's avatar David Hildenbrand Committed by Andrew Morton
Browse files

mm/rmap: remove page_try_dup_anon_rmap() 

All users are gone, remove page_try_dup_anon_rmap() and any remaining
traces.

Link: https://lkml.kernel.org/r/20231220224504.646757-38-david@redhat.com


Signed-off-by: default avatarDavid 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: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 08e7795e

include/linux/rmap.h

+3 −13
Original line number Diff line number Diff line
@@ -253,7 +253,7 @@ void hugetlb_add_anon_rmap(struct folio *, struct vm_area_struct *, 
void hugetlb_add_new_anon_rmap(struct folio *, struct vm_area_struct *,

		unsigned long address);



/* See page_try_dup_anon_rmap() */

/* See folio_try_dup_anon_rmap_*() */

static inline int hugetlb_try_dup_anon_rmap(struct folio *folio,

		struct vm_area_struct *vma)

{
@@ -478,16 +478,6 @@ static inline int folio_try_dup_anon_rmap_pmd(struct folio *folio, 
#endif

}



static inline int page_try_dup_anon_rmap(struct page *page, bool compound,

					 struct vm_area_struct *vma)

{

	struct folio *folio = page_folio(page);



	if (likely(!compound))

		return folio_try_dup_anon_rmap_pte(folio, page, vma);

	return folio_try_dup_anon_rmap_pmd(folio, page, vma);

}



/**

 * page_try_share_anon_rmap - try marking an exclusive anonymous page possibly

 *			      shared to prepare for KSM or temporary unmapping
@@ -496,8 +486,8 @@ static inline int page_try_dup_anon_rmap(struct page *page, bool compound, 
 * The caller needs to hold the PT lock and has to have the page table entry

 * cleared/invalidated.

 *

 * This is similar to page_try_dup_anon_rmap(), however, not used during fork()

 * to duplicate a mapping, but instead to prepare for KSM or temporarily

 * This is similar to folio_try_dup_anon_rmap_*(), however, not used during

 * fork() to duplicate a mapping, but instead to prepare for KSM or temporarily

 * unmapping a page (swap, migration) via folio_remove_rmap_*().

 *

 * Marking the page shared can only fail if the page may be pinned; device