#define EXTENT_BUFFER_DIRTY 2
#define EXTENT_BUFFER_CORRUPT 3
#define EXTENT_BUFFER_READAHEAD 4 /* this got triggered by readahead */
+#define EXTENT_BUFFER_TREE_REF 5
+#define EXTENT_BUFFER_STALE 6
+#define EXTENT_BUFFER_WRITEBACK 7
+#define EXTENT_BUFFER_IOERR 8
/* these are flags for extent_clear_unlock_delalloc */
#define EXTENT_CLEAR_UNLOCK_PAGE 0x1
struct radix_tree_root buffer;
struct address_space *mapping;
u64 dirty_bytes;
+ int track_uptodate;
spinlock_t lock;
spinlock_t buffer_lock;
struct extent_io_ops *ops;
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;
+ struct extent_io_tree *tree;
+ spinlock_t refs_lock;
+ atomic_t refs;
+ atomic_t io_pages;
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 */
* 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,
int try_release_extent_mapping(struct extent_map_tree *map,
struct extent_io_tree *tree, struct page *page,
gfp_t mask);
-int try_release_extent_buffer(struct extent_io_tree *tree, struct page *page);
+int try_release_extent_buffer(struct page *page, gfp_t mask);
int try_release_extent_state(struct extent_map_tree *map,
struct extent_io_tree *tree, struct page *page,
gfp_t mask);
struct address_space *mapping,
get_extent_t *get_extent,
struct writeback_control *wbc);
+int btree_write_cache_pages(struct address_space *mapping,
+ struct writeback_control *wbc);
int extent_readpages(struct extent_io_tree *tree,
struct address_space *mapping,
struct list_head *pages, unsigned nr_pages,
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);
+void free_extent_buffer_stale(struct extent_buffer *eb);
#define WAIT_NONE 0
#define WAIT_COMPLETE 1
#define WAIT_PAGE_LOCK 2
void memset_extent_buffer(struct extent_buffer *eb, char c,
unsigned long start, unsigned long len);
int wait_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, int bits);
-int clear_extent_buffer_dirty(struct extent_io_tree *tree,
- struct extent_buffer *eb);
-int set_extent_buffer_dirty(struct extent_io_tree *tree,
- struct extent_buffer *eb);
-int set_extent_buffer_uptodate(struct extent_io_tree *tree,
- struct extent_buffer *eb);
-int clear_extent_buffer_uptodate(struct extent_io_tree *tree,
- struct extent_buffer *eb,
- struct extent_state **cached_state);
-int extent_buffer_uptodate(struct extent_io_tree *tree,
- struct extent_buffer *eb,
- struct extent_state *cached_state);
+int clear_extent_buffer_dirty(struct extent_buffer *eb);
+int set_extent_buffer_dirty(struct extent_buffer *eb);
+int set_extent_buffer_uptodate(struct extent_buffer *eb);
+int clear_extent_buffer_uptodate(struct extent_buffer *eb);
+int extent_buffer_uptodate(struct extent_buffer *eb);
int map_private_extent_buffer(struct extent_buffer *eb, unsigned long offset,
unsigned long min_len, char **map,
unsigned long *map_start,
int repair_io_failure(struct btrfs_mapping_tree *map_tree, u64 start,
u64 length, u64 logical, struct page *page,
int mirror_num);
+int end_extent_writepage(struct page *page, int err, u64 start, u64 end);
#endif