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mm: remove free_compound_page() and the compound_page_dtors array

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The only remaining destructor is free_compound_page().  Inline it into
destroy_large_folio() and remove the array it used to live in.

Link: https://lkml.kernel.org/r/20230816151201.3655946-7-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Cc: Yanteng Si <siyanteng@loongson.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle)
2023-08-16 16:11:54 +01:00
committed by Andrew Morton
parent da6e7bf3a0
commit 0f2f43fabb
2 changed files with 5 additions and 29 deletions
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10
include/linux/mm.h
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@@ -1239,14 +1239,6 @@ void folio_copy(struct folio *dst, struct folio *src);
unsigned long nr_free_buffer_pages(void);
/*
* Compound pages have a destructor function. Provide a
* prototype for that function and accessor functions.
* These are _only_ valid on the head of a compound page.
*/
typedef void compound_page_dtor(struct page *);
/* Keep the enum in sync with compound_page_dtors array in mm/page_alloc.c */
enum compound_dtor_id {
NULL_COMPOUND_DTOR,
COMPOUND_PAGE_DTOR,
@@ -1299,8 +1291,6 @@ static inline unsigned long thp_size(struct page *page)
return PAGE_SIZE << thp_order(page);
}
void free_compound_page(struct page *page);
#ifdef CONFIG_MMU
/*
* Do pte_mkwrite, but only if the vma says VM_WRITE. We do this when