diff options
Diffstat (limited to 'include/linux/pagemap.h')
| -rw-r--r-- | include/linux/pagemap.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 7a8dcb82a69..8a83537d697 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -11,6 +11,7 @@ #include <linux/compiler.h> #include <asm/uaccess.h> #include <linux/gfp.h> +#include <linux/bitops.h> /* * Bits in mapping->flags. The lower __GFP_BITS_SHIFT bits are the page @@ -19,6 +20,16 @@ #define AS_EIO (__GFP_BITS_SHIFT + 0) /* IO error on async write */ #define AS_ENOSPC (__GFP_BITS_SHIFT + 1) /* ENOSPC on async write */ +static inline void mapping_set_error(struct address_space *mapping, int error) +{ + if (error) { + if (error == -ENOSPC) + set_bit(AS_ENOSPC, &mapping->flags); + else + set_bit(AS_EIO, &mapping->flags); + } +} + static inline gfp_t mapping_gfp_mask(struct address_space * mapping) { return (__force gfp_t)mapping->flags & __GFP_BITS_MASK; @@ -95,12 +106,23 @@ static inline struct page *grab_cache_page(struct address_space *mapping, unsign extern struct page * grab_cache_page_nowait(struct address_space *mapping, unsigned long index); +extern struct page * read_cache_page_async(struct address_space *mapping, + unsigned long index, filler_t *filler, + void *data); extern struct page * read_cache_page(struct address_space *mapping, unsigned long index, filler_t *filler, void *data); extern int read_cache_pages(struct address_space *mapping, struct list_head *pages, filler_t *filler, void *data); +static inline struct page *read_mapping_page_async( + struct address_space *mapping, + unsigned long index, void *data) +{ + filler_t *filler = (filler_t *)mapping->a_ops->readpage; + return read_cache_page_async(mapping, index, filler, data); +} + static inline struct page *read_mapping_page(struct address_space *mapping, unsigned long index, void *data) { |