Btrfs: snapshot progress

[linux-2.6-block.git] / fs / btrfs / ctree.h

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 5460030c9e6afa743cfd00eff19b6ea41cf725cf..2cbcaaeac9e55f8a9869315714f857374fedf27e 100644 (file)
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -227,7 +227,7 @@ struct btrfs_csum_item {
 } __attribute__ ((__packed__));
 
 struct btrfs_inode_map_item {
-       struct btrfs_disk_key key;
+       u32 refs;
 } __attribute__ ((__packed__));
 
 struct crypto_hash;
@@ -883,6 +883,17 @@ static inline void btrfs_set_file_extent_num_blocks(struct
        e->num_blocks = cpu_to_le64(val);
 }
 
+static inline u32 btrfs_inode_map_refs(struct btrfs_inode_map_item *m)
+{
+       return le32_to_cpu(m->refs);
+}
+
+static inline void btrfs_set_inode_map_refs(struct btrfs_inode_map_item *m,
+                                           u32 val)
+{
+       m->refs = cpu_to_le32(val);
+}
+
 static inline struct btrfs_root *btrfs_sb(struct super_block *sb)
 {
        return sb->s_fs_info;
@@ -925,6 +936,8 @@ static inline void btrfs_mark_buffer_dirty(struct buffer_head *bh)
        btrfs_item_offset((leaf)->items + (slot))))
 
 /* extent-item.c */
+int btrfs_inc_root_ref(struct btrfs_trans_handle *trans,
+                      struct btrfs_root *root);
 struct buffer_head *btrfs_alloc_free_block(struct btrfs_trans_handle *trans,
                                            struct btrfs_root *root);
 int btrfs_alloc_extent(struct btrfs_trans_handle *trans, struct btrfs_root