Btrfs: search for an allocation hint while filling file COW

[deliverable/linux.git] / fs / btrfs / extent_map.h

diff --git a/fs/btrfs/extent_map.h b/fs/btrfs/extent_map.h
index d3d442f4bbbdad3d29a1d6e5fddf80f52770c371..ab6d74b6e6477dcfb1bf65df494c5749cc8d80d9 100644 (file)
--- a/fs/btrfs/extent_map.h
+++ b/fs/btrfs/extent_map.h
@@ -60,4 +60,6 @@ void free_extent_map(struct extent_map *em);
 int __init extent_map_init(void);
 void extent_map_exit(void);
 int unpin_extent_cache(struct extent_map_tree *tree, u64 start, u64 len);
+struct extent_map *search_extent_mapping(struct extent_map_tree *tree,
+                                        u64 start, u64 len);
 #endif