diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/pagemap.h | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index bb4433c98d02..4220ded38f4b 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -812,20 +812,23 @@ static inline int add_to_page_cache(struct page *page, * @file: The file, used primarily by network filesystems for authentication. * May be NULL if invoked internally by the filesystem. * @mapping: Readahead this filesystem object. + * @ra: File readahead state. May be NULL. */ struct readahead_control { struct file *file; struct address_space *mapping; + struct file_ra_state *ra; /* private: use the readahead_* accessors instead */ pgoff_t _index; unsigned int _nr_pages; unsigned int _batch_count; }; -#define DEFINE_READAHEAD(rac, f, m, i) \ - struct readahead_control rac = { \ +#define DEFINE_READAHEAD(ractl, f, r, m, i) \ + struct readahead_control ractl = { \ .file = f, \ .mapping = m, \ + .ra = r, \ ._index = i, \ } @@ -833,10 +836,9 @@ struct readahead_control { void page_cache_ra_unbounded(struct readahead_control *, unsigned long nr_to_read, unsigned long lookahead_count); -void page_cache_sync_ra(struct readahead_control *, struct file_ra_state *, +void page_cache_sync_ra(struct readahead_control *, unsigned long req_count); +void page_cache_async_ra(struct readahead_control *, struct page *, unsigned long req_count); -void page_cache_async_ra(struct readahead_control *, struct file_ra_state *, - struct page *, unsigned long req_count); /** * page_cache_sync_readahead - generic file readahead @@ -856,8 +858,8 @@ void page_cache_sync_readahead(struct address_space *mapping, struct file_ra_state *ra, struct file *file, pgoff_t index, unsigned long req_count) { - DEFINE_READAHEAD(ractl, file, mapping, index); - page_cache_sync_ra(&ractl, ra, req_count); + DEFINE_READAHEAD(ractl, file, ra, mapping, index); + page_cache_sync_ra(&ractl, req_count); } /** @@ -879,8 +881,8 @@ void page_cache_async_readahead(struct address_space *mapping, struct file_ra_state *ra, struct file *file, struct page *page, pgoff_t index, unsigned long req_count) { - DEFINE_READAHEAD(ractl, file, mapping, index); - page_cache_async_ra(&ractl, ra, page, req_count); + DEFINE_READAHEAD(ractl, file, ra, mapping, index); + page_cache_async_ra(&ractl, page, req_count); } /** |