diff options
Diffstat (limited to 'mm/internal.h')
| -rw-r--r-- | mm/internal.h | 30 |
1 files changed, 14 insertions, 16 deletions
diff --git a/mm/internal.h b/mm/internal.h index 10c677655912..c43ccdddb0f6 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -49,22 +49,20 @@ void unmap_page_range(struct mmu_gather *tlb, unsigned long addr, unsigned long end, struct zap_details *details); -void force_page_cache_readahead(struct address_space *, struct file *, - pgoff_t index, unsigned long nr_to_read); -void __do_page_cache_readahead(struct address_space *, struct file *, - pgoff_t index, unsigned long nr_to_read, +void do_page_cache_ra(struct readahead_control *, unsigned long nr_to_read, unsigned long lookahead_size); - -/* - * Submit IO for the read-ahead request in file_ra_state. - */ -static inline void ra_submit(struct file_ra_state *ra, - struct address_space *mapping, struct file *filp) +void force_page_cache_ra(struct readahead_control *, struct file_ra_state *, + unsigned long nr); +static inline void force_page_cache_readahead(struct address_space *mapping, + struct file *file, pgoff_t index, unsigned long nr_to_read) { - __do_page_cache_readahead(mapping, filp, - ra->start, ra->size, ra->async_size); + DEFINE_READAHEAD(ractl, file, mapping, index); + force_page_cache_ra(&ractl, &file->f_ra, nr_to_read); } +struct page *find_get_entry(struct address_space *mapping, pgoff_t index); +struct page *find_lock_entry(struct address_space *mapping, pgoff_t index); + /** * page_evictable - test whether a page is evictable * @page: the page to test @@ -272,16 +270,16 @@ int find_suitable_fallback(struct free_area *area, unsigned int order, * page from being allocated in parallel and returning garbage as the order. * If a caller does not hold page_zone(page)->lock, it must guarantee that the * page cannot be allocated or merged in parallel. Alternatively, it must - * handle invalid values gracefully, and use page_order_unsafe() below. + * handle invalid values gracefully, and use buddy_order_unsafe() below. */ -static inline unsigned int page_order(struct page *page) +static inline unsigned int buddy_order(struct page *page) { /* PageBuddy() must be checked by the caller */ return page_private(page); } /* - * Like page_order(), but for callers who cannot afford to hold the zone lock. + * Like buddy_order(), but for callers who cannot afford to hold the zone lock. * PageBuddy() should be checked first by the caller to minimize race window, * and invalid values must be handled gracefully. * @@ -291,7 +289,7 @@ static inline unsigned int page_order(struct page *page) * times, potentially observing different values in the tests and the actual * use of the result. */ -#define page_order_unsafe(page) READ_ONCE(page_private(page)) +#define buddy_order_unsafe(page) READ_ONCE(page_private(page)) static inline bool is_cow_mapping(vm_flags_t flags) { |