/* bits for the extent state */
#define EXTENT_DIRTY (1U << 0)
-#define EXTENT_WRITEBACK (1U << 1)
-#define EXTENT_UPTODATE (1U << 2)
-#define EXTENT_LOCKED (1U << 3)
-#define EXTENT_NEW (1U << 4)
-#define EXTENT_DELALLOC (1U << 5)
-#define EXTENT_DEFRAG (1U << 6)
-#define EXTENT_BOUNDARY (1U << 9)
-#define EXTENT_NODATASUM (1U << 10)
-#define EXTENT_CLEAR_META_RESV (1U << 11)
-#define EXTENT_NEED_WAIT (1U << 12)
-#define EXTENT_DAMAGED (1U << 13)
-#define EXTENT_NORESERVE (1U << 14)
-#define EXTENT_QGROUP_RESERVED (1U << 15)
-#define EXTENT_CLEAR_DATA_RESV (1U << 16)
-#define EXTENT_DELALLOC_NEW (1U << 17)
-#define EXTENT_IOBITS (EXTENT_LOCKED | EXTENT_WRITEBACK)
+#define EXTENT_UPTODATE (1U << 1)
+#define EXTENT_LOCKED (1U << 2)
+#define EXTENT_NEW (1U << 3)
+#define EXTENT_DELALLOC (1U << 4)
+#define EXTENT_DEFRAG (1U << 5)
+#define EXTENT_BOUNDARY (1U << 6)
+#define EXTENT_NODATASUM (1U << 7)
+#define EXTENT_CLEAR_META_RESV (1U << 8)
+#define EXTENT_NEED_WAIT (1U << 9)
+#define EXTENT_DAMAGED (1U << 10)
+#define EXTENT_NORESERVE (1U << 11)
+#define EXTENT_QGROUP_RESERVED (1U << 12)
+#define EXTENT_CLEAR_DATA_RESV (1U << 13)
+#define EXTENT_DELALLOC_NEW (1U << 14)
#define EXTENT_DO_ACCOUNTING (EXTENT_CLEAR_META_RESV | \
EXTENT_CLEAR_DATA_RESV)
#define EXTENT_CTLBITS (EXTENT_DO_ACCOUNTING)
int mirror);
};
+enum {
+ IO_TREE_FS_INFO_FREED_EXTENTS0,
+ IO_TREE_FS_INFO_FREED_EXTENTS1,
+ IO_TREE_INODE_IO,
+ IO_TREE_INODE_IO_FAILURE,
+ IO_TREE_RELOC_BLOCKS,
+ IO_TREE_TRANS_DIRTY_PAGES,
+ IO_TREE_ROOT_DIRTY_LOG_PAGES,
+ IO_TREE_SELFTEST,
+};
+
struct extent_io_tree {
struct rb_root state;
struct btrfs_fs_info *fs_info;
void *private_data;
u64 dirty_bytes;
- int track_uptodate;
+ bool track_uptodate;
+
+ /* Who owns this io tree, should be one of IO_TREE_* */
+ u8 owner;
+
spinlock_t lock;
const struct extent_io_ops *ops;
};
struct rcu_head rcu_head;
pid_t lock_owner;
- /* count of read lock holders on the extent buffer */
- atomic_t write_locks;
- atomic_t read_locks;
atomic_t blocking_writers;
atomic_t blocking_readers;
- atomic_t spinning_readers;
- atomic_t spinning_writers;
- short lock_nested;
+ bool lock_nested;
/* >= 0 if eb belongs to a log tree, -1 otherwise */
short log_index;
wait_queue_head_t read_lock_wq;
struct page *pages[INLINE_EXTENT_BUFFER_PAGES];
#ifdef CONFIG_BTRFS_DEBUG
+ atomic_t spinning_writers;
+ atomic_t spinning_readers;
+ atomic_t read_locks;
+ atomic_t write_locks;
struct list_head leak_list;
#endif
};
int create);
void extent_io_tree_init(struct btrfs_fs_info *fs_info,
- struct extent_io_tree *tree, void *private_data);
+ struct extent_io_tree *tree, unsigned int owner,
+ void *private_data);
int try_release_extent_mapping(struct page *page, gfp_t mask);
int try_release_extent_buffer(struct page *page);
int lock_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,
struct extent_io_tree *io_tree, u64 start,
struct page *page, u64 ino, unsigned int pg_offset);
void end_extent_writepage(struct page *page, int err, u64 start, u64 end);
-int repair_eb_io_failure(struct btrfs_fs_info *fs_info,
- struct extent_buffer *eb, int mirror_num);
+int btrfs_repair_eb_io_failure(struct extent_buffer *eb, int mirror_num);
/*
* When IO fails, either with EIO or csum verification fails, we