Commit 498aefbc authored by Matthew Wilcox (Oracle)'s avatar Matthew Wilcox (Oracle) Committed by Andrew Morton
Browse files

mm: remove page_ref_sub_return() 

With all callers converted to folios, we can act directly on
folio->_refcount.

Link: https://lkml.kernel.org/r/20240424191914.361554-5-willy@infradead.org


Signed-off-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 53e45c4f

include/linux/page_ref.h

+3 −8
Original line number Diff line number Diff line
@@ -139,20 +139,15 @@ static inline void folio_ref_sub(struct folio *folio, int nr) 
	page_ref_sub(&folio->page, nr);

}



static inline int page_ref_sub_return(struct page *page, int nr)

static inline int folio_ref_sub_return(struct folio *folio, int nr)

{

	int ret = atomic_sub_return(nr, &page->_refcount);

	int ret = atomic_sub_return(nr, &folio->_refcount);



	if (page_ref_tracepoint_active(page_ref_mod_and_return))

		__page_ref_mod_and_return(page, -nr, ret);

		__page_ref_mod_and_return(&folio->page, -nr, ret);

	return ret;

}



static inline int folio_ref_sub_return(struct folio *folio, int nr)

{

	return page_ref_sub_return(&folio->page, nr);

}



static inline void page_ref_inc(struct page *page)

{

	atomic_inc(&page->_refcount);