Lines Matching refs:em_tree
127 struct extent_map_tree *em_tree = &BTRFS_I(inode)->extent_tree;
131 read_lock(&em_tree->lock);
132 em = lookup_extent_mapping(em_tree, start, len);
136 read_unlock(&em_tree->lock);
139 read_unlock(&em_tree->lock);
152 write_lock(&em_tree->lock);
153 ret = add_extent_mapping(em_tree, em);
159 em = lookup_extent_mapping(em_tree, start, len);
163 em = lookup_extent_mapping(em_tree, failed_start,
171 write_unlock(&em_tree->lock);
1271 struct extent_map_tree *em_tree;
1304 em_tree = &BTRFS_I(inode)->extent_tree;
1305 read_lock(&em_tree->lock);
1306 em = lookup_extent_mapping(em_tree, offset, PAGE_CACHE_SIZE);
1307 read_unlock(&em_tree->lock);