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mm: Remove page_cache_add_speculative() and page_cache_get_speculative() 

These wrappers have no more callers, so delete them.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
This commit is contained in:
Matthew Wilcox (Oracle) 2021-12-29 12:23:55 -05:00
parent 5fec071990
commit 40fcc7fc2c
2 changed files with 3 additions and 14 deletions
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7
include/linux/mm.h
View File

@ -1215,10 +1215,9 @@ static inline void put_page(struct page *page)
* applications that don't have huge page reference counts, this won't be an
* issue.
*
* Locking: the lockless algorithm described in page_cache_get_speculative()
* and page_cache_gup_pin_speculative() provides safe operation for
* get_user_pages and page_mkclean and other calls that race to set up page
* table entries.
* Locking: the lockless algorithm described in folio_try_get_rcu()
* provides safe operation for get_user_pages(), page_mkclean() and
* other calls that race to set up page table entries.
*/
#define GUP_PIN_COUNTING_BIAS (1U << 10)

10
include/linux/pagemap.h
View File

@ -283,16 +283,6 @@ static inline struct inode *folio_inode(struct folio *folio)
return folio->mapping->host;
}
static inline bool page_cache_add_speculative(struct page *page, int count)
{
return folio_ref_try_add_rcu((struct folio *)page, count);
}
static inline bool page_cache_get_speculative(struct page *page)
{
return page_cache_add_speculative(page, 1);
}
/**
* folio_attach_private - Attach private data to a folio.
* @folio: Folio to attach data to.