-
-/*
- * SUCK SUCK SUCK
- * Our headers are so bad that struct ocfs2_extent_map is in ocfs.h
- */
-
-struct ocfs2_extent_map_entry {
- struct rb_node e_node;
- int e_tree_depth;
- struct ocfs2_extent_rec e_rec;
-};
-
-struct ocfs2_em_insert_context {
- int need_left;
- int need_right;
- struct ocfs2_extent_map_entry *new_ent;
- struct ocfs2_extent_map_entry *old_ent;
- struct ocfs2_extent_map_entry *left_ent;
- struct ocfs2_extent_map_entry *right_ent;
-};
-
-static struct kmem_cache *ocfs2_em_ent_cachep = NULL;
-
-
-static struct ocfs2_extent_map_entry *
-ocfs2_extent_map_lookup(struct ocfs2_extent_map *em,
- u32 cpos, u32 clusters,
- struct rb_node ***ret_p,
- struct rb_node **ret_parent);
-static int ocfs2_extent_map_insert(struct inode *inode,
- struct ocfs2_extent_rec *rec,
- int tree_depth);
-static int ocfs2_extent_map_insert_entry(struct ocfs2_extent_map *em,
- struct ocfs2_extent_map_entry *ent);
-static int ocfs2_extent_map_find_leaf(struct inode *inode,
- u32 cpos, u32 clusters,
- struct ocfs2_extent_list *el);
-static int ocfs2_extent_map_lookup_read(struct inode *inode,
- u32 cpos, u32 clusters,
- struct ocfs2_extent_map_entry **ret_ent);
-static int ocfs2_extent_map_try_insert(struct inode *inode,
- struct ocfs2_extent_rec *rec,
- int tree_depth,
- struct ocfs2_em_insert_context *ctxt);
-
-/* returns 1 only if the rec contains all the given clusters -- that is that
- * rec's cpos is <= the cluster cpos and that the rec endpoint (cpos +
- * clusters) is >= the argument's endpoint */
-static int ocfs2_extent_rec_contains_clusters(struct ocfs2_extent_rec *rec,
- u32 cpos, u32 clusters)
-{
- if (le32_to_cpu(rec->e_cpos) > cpos)
- return 0;
- if (cpos + clusters > le32_to_cpu(rec->e_cpos) +
- le32_to_cpu(rec->e_clusters))
- return 0;
- return 1;
-}
-
-