extern struct kmem_cache *btrfs_path_cachep;
struct btrfs_ordered_sum;
-#define BTRFS_MAGIC "_B5RfS_M"
+#define BTRFS_MAGIC "_B6RfS_M"
+
+#define BTRFS_ACL_NOT_CACHED ((void *)-1)
#ifdef CONFIG_LOCKDEP
# define BTRFS_MAX_LEVEL 7
/* directory objectid inside the root tree */
#define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL
+/* orhpan objectid for tracking unlinked/truncated files */
+#define BTRFS_ORPHAN_OBJECTID -5ULL
+
/*
* All files have objectids higher than this.
*/
int do_barriers;
int closing;
atomic_t throttles;
+ atomic_t throttle_gen;
u64 total_pinned;
struct list_head dirty_cowonly_roots;
u64 last_alloc;
u64 last_data_alloc;
+ spinlock_t ref_cache_lock;
+ u64 total_ref_cache_size;
+
u64 avail_data_alloc_bits;
u64 avail_metadata_alloc_bits;
u64 avail_system_alloc_bits;
void *bdev_holder;
};
+struct btrfs_leaf_ref_tree {
+ struct rb_root root;
+ struct btrfs_leaf_ref *last;
+ struct list_head list;
+ spinlock_t lock;
+};
+
/*
* in ram representation of the tree. extent_root is used for all allocations
* and for the extent tree extent_root root.
*/
+struct btrfs_dirty_root;
struct btrfs_root {
struct extent_buffer *node;
spinlock_t node_lock;
struct extent_buffer *commit_root;
+ struct btrfs_leaf_ref_tree *ref_tree;
+ struct btrfs_leaf_ref_tree ref_tree_struct;
+ struct btrfs_dirty_root *dirty_root;
+
struct btrfs_root_item root_item;
struct btrfs_key root_key;
struct btrfs_fs_info *fs_info;
/* the dirty list is only used by non-reference counted roots */
struct list_head dirty_list;
+
+ spinlock_t list_lock;
+ struct list_head dead_list;
+ struct list_head orphan_list;
};
/*
#define BTRFS_INODE_ITEM_KEY 1
#define BTRFS_INODE_REF_KEY 2
#define BTRFS_XATTR_ITEM_KEY 8
+#define BTRFS_ORPHAN_ITEM_KEY 9
/* reserve 2-15 close to the inode for later flexibility */
/*
}
/* extent-tree.c */
-u32 btrfs_count_snapshots_in_path(struct btrfs_root *root,
- struct btrfs_path *count_path,
- u64 expected_owner, u64 first_extent);
+int btrfs_cross_ref_exists(struct btrfs_root *root,
+ struct btrfs_key *key, u64 bytenr);
int btrfs_extent_post_op(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
int btrfs_copy_pinned(struct btrfs_root *root, struct extent_io_tree *copy);
int level,
u64 hint,
u64 empty_size);
+struct extent_buffer *btrfs_init_new_buffer(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ u64 bytenr, u32 blocksize);
int btrfs_shrink_extent_tree(struct btrfs_root *root, u64 new_size);
int btrfs_insert_extent_backref(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
u64 search_end, struct btrfs_key *ins,
u64 data);
int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
- struct extent_buffer *buf);
+ struct extent_buffer *buf, int cache_ref);
int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root
*root, u64 bytenr, u64 num_bytes,
u64 root_objectid, u64 ref_generation,
u64 owner_objectid, u64 owner_offset, int pin);
+int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len);
int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct extent_io_tree *unpin);
int btrfs_cow_block(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct extent_buffer *buf,
struct extent_buffer *parent, int parent_slot,
- struct extent_buffer **cow_ret);
+ struct extent_buffer **cow_ret, u64 prealloc_dest);
int btrfs_copy_root(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
struct extent_buffer *buf,
struct btrfs_path *path, u64 dir,
const char *name, u16 name_len,
int mod);
+
+/* orphan.c */
+int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, u64 offset);
+int btrfs_del_orphan_item(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, u64 offset);
+
/* inode-map.c */
int btrfs_find_free_objectid(struct btrfs_trans_handle *trans,
struct btrfs_root *fs_root,
struct btrfs_key *location, int mod);
/* file-item.c */
+int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode,
+ struct bio *bio);
int btrfs_insert_file_extent(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
u64 objectid, u64 pos, u64 disk_offset,
/* xattr.c */
ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size);
-int btrfs_delete_xattrs(struct btrfs_trans_handle *trans,
- struct btrfs_root *root, struct inode *inode);
+
/* super.c */
u64 btrfs_parse_size(char *str);
int btrfs_parse_options(struct btrfs_root *root, char *options);
int btrfs_sync_fs(struct super_block *sb, int wait);
+
+/* acl.c */
+int btrfs_check_acl(struct inode *inode, int mask);
+int btrfs_init_acl(struct inode *inode, struct inode *dir);
+int btrfs_acl_chmod(struct inode *inode);
#endif