diff options
Diffstat (limited to 'fs/btrfs/extent_io.h')
| -rw-r--r-- | fs/btrfs/extent_io.h | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h index cecc3518c121..4e38a3d9631a 100644 --- a/fs/btrfs/extent_io.h +++ b/fs/btrfs/extent_io.h @@ -119,16 +119,18 @@ struct extent_state { struct list_head leak_list; }; +#define INLINE_EXTENT_BUFFER_PAGES 16 +#define MAX_INLINE_EXTENT_BUFFER_SIZE (INLINE_EXTENT_BUFFER_PAGES * PAGE_CACHE_SIZE) struct extent_buffer { u64 start; unsigned long len; unsigned long map_start; unsigned long map_len; - struct page *first_page; unsigned long bflags; + atomic_t refs; + atomic_t pages_reading; struct list_head leak_list; struct rcu_head rcu_head; - atomic_t refs; pid_t lock_owner; /* count of read lock holders on the extent buffer */ @@ -152,6 +154,9 @@ struct extent_buffer { * to unlock */ wait_queue_head_t read_lock_wq; + wait_queue_head_t lock_wq; + struct page *inline_pages[INLINE_EXTENT_BUFFER_PAGES]; + struct page **pages; }; static inline void extent_set_compress_type(unsigned long *bio_flags, @@ -251,8 +256,7 @@ int get_state_private(struct extent_io_tree *tree, u64 start, u64 *private); void set_page_extent_mapped(struct page *page); struct extent_buffer *alloc_extent_buffer(struct extent_io_tree *tree, - u64 start, unsigned long len, - struct page *page0); + u64 start, unsigned long len); struct extent_buffer *find_extent_buffer(struct extent_io_tree *tree, u64 start, unsigned long len); void free_extent_buffer(struct extent_buffer *eb); |