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mm: remove try_to_free_swap() 

All callers have now been converted to folio_free_swap() and we can remove
this wrapper.

Link: https://lkml.kernel.org/r/20220902194653.1739778-49-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2022-09-02 20:46:44 +01:00 committed by Andrew Morton
parent 9202d527b7
commit 3b344157c0
3 changed files with 1 additions and 14 deletions
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6
include/linux/swap.h
View File

@ -510,7 +510,6 @@ extern int __swp_swapcount(swp_entry_t entry);
extern int swp_swapcount(swp_entry_t entry); extern int swp_swapcount(swp_entry_t entry);
extern struct swap_info_struct *page_swap_info(struct page *); extern struct swap_info_struct *page_swap_info(struct page *);
extern struct swap_info_struct *swp_swap_info(swp_entry_t entry); extern struct swap_info_struct *swp_swap_info(swp_entry_t entry);
extern int try_to_free_swap(struct page *);
struct backing_dev_info; struct backing_dev_info;
extern int init_swap_address_space(unsigned int type, unsigned long nr_pages); extern int init_swap_address_space(unsigned int type, unsigned long nr_pages);
extern void exit_swap_address_space(unsigned int type); extern void exit_swap_address_space(unsigned int type);
@ -595,11 +594,6 @@ static inline int swp_swapcount(swp_entry_t entry)
return 0; return 0;
} }
static inline int try_to_free_swap(struct page *page)
{
return 0;
}
static inline swp_entry_t folio_alloc_swap(struct folio *folio) static inline swp_entry_t folio_alloc_swap(struct folio *folio)
{ {
swp_entry_t entry; swp_entry_t entry;

7
mm/folio-compat.c
View File

@ -146,10 +146,3 @@ void putback_lru_page(struct page *page)
{ {
folio_putback_lru(page_folio(page)); folio_putback_lru(page_folio(page));
} }
#ifdef CONFIG_SWAP
int try_to_free_swap(struct page *page)
{
return folio_free_swap(page_folio(page));
}
#endif

2
mm/memory.c
View File

@ -3844,7 +3844,7 @@ vm_fault_t do_swap_page(struct vm_fault *vmf)
if (swapcache) { if (swapcache) {
/* /*
* Make sure try_to_free_swap or swapoff did not release the * Make sure folio_free_swap() or swapoff did not release the
* swapcache from under us. The page pin, and pte_same test * swapcache from under us. The page pin, and pte_same test
* below, are not enough to exclude that. Even if it is still * below, are not enough to exclude that. Even if it is still
* swapcache, we need to check that the page's swap has not * swapcache, we need to check that the page's swap has not