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Diffstat (limited to 'fs/btrfs/extent_io.h')
-rw-r--r--fs/btrfs/extent_io.h16
1 files changed, 4 insertions, 12 deletions
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index 0bfd4aeb822d..b4d03e677e1d 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -46,7 +46,7 @@
#define EXTENT_BUFFER_STALE 6
#define EXTENT_BUFFER_WRITEBACK 7
#define EXTENT_BUFFER_READ_ERR 8 /* read IO error */
-#define EXTENT_BUFFER_DUMMY 9
+#define EXTENT_BUFFER_UNMAPPED 9
#define EXTENT_BUFFER_IN_TREE 10
#define EXTENT_BUFFER_WRITE_ERR 11 /* write IO error */
@@ -92,9 +92,6 @@ typedef blk_status_t (extent_submit_bio_hook_t)(void *private_data, struct bio *
typedef blk_status_t (extent_submit_bio_start_t)(void *private_data,
struct bio *bio, u64 bio_offset);
-typedef blk_status_t (extent_submit_bio_done_t)(void *private_data,
- struct bio *bio, int mirror_num);
-
struct extent_io_ops {
/*
* The following callbacks must be allways defined, the function
@@ -104,12 +101,7 @@ struct extent_io_ops {
int (*readpage_end_io_hook)(struct btrfs_io_bio *io_bio, u64 phy_offset,
struct page *page, u64 start, u64 end,
int mirror);
- int (*merge_bio_hook)(struct page *page, unsigned long offset,
- size_t size, struct bio *bio,
- unsigned long bio_flags);
int (*readpage_io_failed_hook)(struct page *page, int failed_mirror);
- struct btrfs_fs_info *(*tree_fs_info)(void *private_data);
- void (*set_range_writeback)(void *private_data, u64 start, u64 end);
/*
* Optional hooks, called if the pointer is not NULL
@@ -440,10 +432,10 @@ int read_extent_buffer_pages(struct extent_io_tree *tree,
int mirror_num);
void wait_on_extent_buffer_writeback(struct extent_buffer *eb);
-static inline unsigned long num_extent_pages(u64 start, u64 len)
+static inline int num_extent_pages(const struct extent_buffer *eb)
{
- return ((start + len + PAGE_SIZE - 1) >> PAGE_SHIFT) -
- (start >> PAGE_SHIFT);
+ return (round_up(eb->start + eb->len, PAGE_SIZE) >> PAGE_SHIFT) -
+ (eb->start >> PAGE_SHIFT);
}
static inline void extent_buffer_get(struct extent_buffer *eb)