#define EXTENT_DEFRAG (1 << 6)
#define EXTENT_DEFRAG_DONE (1 << 7)
#define EXTENT_BUFFER_FILLED (1 << 8)
+#define EXTENT_BOUNDARY (1 << 9)
+#define EXTENT_NODATASUM (1 << 10)
+#define EXTENT_DO_ACCOUNTING (1 << 11)
+#define EXTENT_FIRST_DELALLOC (1 << 12)
#define EXTENT_IOBITS (EXTENT_LOCKED | EXTENT_WRITEBACK)
+#define EXTENT_CTLBITS (EXTENT_DO_ACCOUNTING | EXTENT_FIRST_DELALLOC)
+
+/* flags for bio submission */
+#define EXTENT_BIO_COMPRESSED 1
+
+/* these are bit numbers for test/set bit */
+#define EXTENT_BUFFER_UPTODATE 0
+#define EXTENT_BUFFER_BLOCKING 1
+#define EXTENT_BUFFER_DIRTY 2
+
+/* these are flags for extent_clear_unlock_delalloc */
+#define EXTENT_CLEAR_UNLOCK_PAGE 0x1
+#define EXTENT_CLEAR_UNLOCK 0x2
+#define EXTENT_CLEAR_DELALLOC 0x4
+#define EXTENT_CLEAR_DIRTY 0x8
+#define EXTENT_SET_WRITEBACK 0x10
+#define EXTENT_END_WRITEBACK 0x20
+#define EXTENT_SET_PRIVATE2 0x40
+#define EXTENT_CLEAR_ACCOUNTING 0x80
/*
* page->private values. Every page that is controlled by the extent
struct extent_state;
+typedef int (extent_submit_bio_hook_t)(struct inode *inode, int rw,
+ struct bio *bio, int mirror_num,
+ unsigned long bio_flags, u64 bio_offset);
struct extent_io_ops {
- int (*fill_delalloc)(struct inode *inode, u64 start, u64 end);
+ int (*fill_delalloc)(struct inode *inode, struct page *locked_page,
+ u64 start, u64 end, int *page_started,
+ unsigned long *nr_written);
+ int (*writepage_start_hook)(struct page *page, u64 start, u64 end);
int (*writepage_io_hook)(struct page *page, u64 start, u64 end);
- int (*submit_bio_hook)(struct inode *inode, int rw, struct bio *bio,
- int mirror_num);
+ extent_submit_bio_hook_t *submit_bio_hook;
int (*merge_bio_hook)(struct page *page, unsigned long offset,
- size_t size, struct bio *bio);
+ size_t size, struct bio *bio,
+ unsigned long bio_flags);
int (*readpage_io_hook)(struct page *page, u64 start, u64 end);
+ int (*readpage_io_failed_hook)(struct bio *bio, struct page *page,
+ u64 start, u64 end,
+ struct extent_state *state);
+ int (*writepage_io_failed_hook)(struct bio *bio, struct page *page,
+ u64 start, u64 end,
+ struct extent_state *state);
int (*readpage_end_io_hook)(struct page *page, u64 start, u64 end,
struct extent_state *state);
- void (*writepage_end_io_hook)(struct page *page, u64 start, u64 end,
- struct extent_state *state);
- int (*set_bit_hook)(struct inode *inode, u64 start, u64 end,
- unsigned long old, unsigned long bits);
- int (*clear_bit_hook)(struct inode *inode, u64 start, u64 end,
- unsigned long old, unsigned long bits);
+ int (*writepage_end_io_hook)(struct page *page, u64 start, u64 end,
+ struct extent_state *state, int uptodate);
+ int (*set_bit_hook)(struct inode *inode, struct extent_state *state,
+ int *bits);
+ int (*clear_bit_hook)(struct inode *inode, struct extent_state *state,
+ int *bits);
+ int (*merge_extent_hook)(struct inode *inode,
+ struct extent_state *new,
+ struct extent_state *other);
+ int (*split_extent_hook)(struct inode *inode,
+ struct extent_state *orig, u64 split);
+ int (*write_cache_pages_lock_hook)(struct page *page);
};
struct extent_io_tree {
struct rb_root state;
+ struct rb_root buffer;
struct address_space *mapping;
u64 dirty_bytes;
spinlock_t lock;
+ spinlock_t buffer_lock;
struct extent_io_ops *ops;
- spinlock_t lru_lock;
- struct list_head buffer_lru;
- int lru_size;
- struct extent_state *last;
};
struct extent_state {
u64 start;
u64 end; /* inclusive */
struct rb_node rb_node;
+
+ /* ADD NEW ELEMENTS AFTER THIS */
struct extent_io_tree *tree;
wait_queue_head_t wq;
atomic_t refs;
unsigned long state;
+ u64 split_start;
+ u64 split_end;
/* for use by the FS */
u64 private;
unsigned long map_start;
unsigned long map_len;
struct page *first_page;
- struct list_head lru;
+ unsigned long bflags;
atomic_t refs;
- int flags;
struct list_head leak_list;
+ struct rb_node rb_node;
+
+ /* the spinlock is used to protect most operations */
+ spinlock_t lock;
+
+ /*
+ * when we keep the lock held while blocking, waiters go onto
+ * the wq
+ */
+ wait_queue_head_t lock_wq;
};
struct extent_map_tree;
void extent_io_tree_init(struct extent_io_tree *tree,
struct address_space *mapping, gfp_t mask);
-void extent_io_tree_empty_lru(struct extent_io_tree *tree);
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_state(struct extent_map_tree *map,
+ struct extent_io_tree *tree, struct page *page,
+ gfp_t mask);
int lock_extent(struct extent_io_tree *tree, u64 start, u64 end, gfp_t mask);
+int lock_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,
+ int bits, struct extent_state **cached, gfp_t mask);
int unlock_extent(struct extent_io_tree *tree, u64 start, u64 end, gfp_t mask);
+int unlock_extent_cached(struct extent_io_tree *tree, u64 start, u64 end,
+ struct extent_state **cached, gfp_t mask);
+int try_lock_extent(struct extent_io_tree *tree, u64 start, u64 end,
+ gfp_t mask);
int extent_read_full_page(struct extent_io_tree *tree, struct page *page,
get_extent_t *get_extent);
int __init extent_io_init(void);
u64 *start, u64 search_end,
u64 max_bytes, unsigned long bits);
+void free_extent_state(struct extent_state *state);
int test_range_bit(struct extent_io_tree *tree, u64 start, u64 end,
- int bits, int filled);
+ int bits, int filled, struct extent_state *cached_state);
int clear_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,
int bits, gfp_t mask);
+int clear_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
+ int bits, int wake, int delete, struct extent_state **cached,
+ gfp_t mask);
int set_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,
int bits, gfp_t mask);
+int set_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
+ int bits, int exclusive_bits, u64 *failed_start,
+ struct extent_state **cached_state, gfp_t mask);
int set_extent_uptodate(struct extent_io_tree *tree, u64 start, u64 end,
gfp_t mask);
int set_extent_new(struct extent_io_tree *tree, u64 start, u64 end,
gfp_t mask);
int clear_extent_dirty(struct extent_io_tree *tree, u64 start, u64 end,
gfp_t mask);
+int clear_extent_ordered(struct extent_io_tree *tree, u64 start, u64 end,
+ gfp_t mask);
+int clear_extent_ordered_metadata(struct extent_io_tree *tree, u64 start,
+ u64 end, gfp_t mask);
int set_extent_delalloc(struct extent_io_tree *tree, u64 start, u64 end,
+ struct extent_state **cached_state, gfp_t mask);
+int set_extent_ordered(struct extent_io_tree *tree, u64 start, u64 end,
gfp_t mask);
int find_first_extent_bit(struct extent_io_tree *tree, u64 start,
u64 *start_ret, u64 *end_ret, int bits);
int extent_write_full_page(struct extent_io_tree *tree, struct page *page,
get_extent_t *get_extent,
struct writeback_control *wbc);
+int extent_write_locked_range(struct extent_io_tree *tree, struct inode *inode,
+ u64 start, u64 end, get_extent_t *get_extent,
+ int mode);
int extent_writepages(struct extent_io_tree *tree,
struct address_space *mapping,
get_extent_t *get_extent,
unsigned from, unsigned to);
sector_t extent_bmap(struct address_space *mapping, sector_t iblock,
get_extent_t *get_extent);
+int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
+ __u64 start, __u64 len, get_extent_t *get_extent);
int set_range_dirty(struct extent_io_tree *tree, u64 start, u64 end);
int set_state_private(struct extent_io_tree *tree, u64 start, u64 private);
int get_state_private(struct extent_io_tree *tree, u64 start, u64 *private);
unsigned long start, unsigned long len);
int wait_on_extent_buffer_writeback(struct extent_io_tree *tree,
struct extent_buffer *eb);
+int wait_on_extent_writeback(struct extent_io_tree *tree, u64 start, u64 end);
+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 test_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_buffer *eb,
+ struct extent_state *cached_state);
int map_extent_buffer(struct extent_buffer *eb, unsigned long offset,
unsigned long min_len, char **token, char **map,
unsigned long *map_start,
unsigned long *map_start,
unsigned long *map_len, int km);
void unmap_extent_buffer(struct extent_buffer *eb, char *token, int km);
-int invalidate_extent_lru(struct extent_io_tree *tree, u64 start,
- unsigned long len);
int release_extent_buffer_tail_pages(struct extent_buffer *eb);
int extent_range_uptodate(struct extent_io_tree *tree,
u64 start, u64 end);
+int extent_clear_unlock_delalloc(struct inode *inode,
+ struct extent_io_tree *tree,
+ u64 start, u64 end, struct page *locked_page,
+ unsigned long op);
#endif
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff