diff options
Diffstat (limited to 'include/linux/fs.h')
| -rw-r--r-- | include/linux/fs.h | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index d8ecb01..212ea7b 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -523,6 +523,7 @@ enum positive_aop_returns { struct page; struct address_space; struct writeback_control; +enum migrate_mode; struct iov_iter { const struct iovec *iov; @@ -607,9 +608,12 @@ struct address_space_operations { loff_t offset, unsigned long nr_segs); int (*get_xip_mem)(struct address_space *, pgoff_t, int, void **, unsigned long *); - /* migrate the contents of a page to the specified target */ + /* + * migrate the contents of a page to the specified target. If sync + * is false, it must not block. + */ int (*migratepage) (struct address_space *, - struct page *, struct page *); + struct page *, struct page *, enum migrate_mode); int (*launder_page) (struct page *); int (*is_partially_uptodate) (struct page *, read_descriptor_t *, unsigned long); @@ -2029,6 +2033,7 @@ extern void unregister_blkdev(unsigned int, const char *); extern struct block_device *bdget(dev_t); extern struct block_device *bdgrab(struct block_device *bdev); extern void bd_set_size(struct block_device *, loff_t size); +extern sector_t blkdev_max_block(struct block_device *bdev); extern void bd_forget(struct inode *inode); extern void bdput(struct block_device *); extern void invalidate_bdev(struct block_device *); @@ -2477,7 +2482,8 @@ extern int generic_check_addressable(unsigned, u64); #ifdef CONFIG_MIGRATION extern int buffer_migrate_page(struct address_space *, - struct page *, struct page *); + struct page *, struct page *, + enum migrate_mode); #else #define buffer_migrate_page NULL #endif |