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-rw-r--r--fs/btrfs/extent_map.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/btrfs/extent_map.h b/fs/btrfs/extent_map.h
index 6216dfbcf9b..d3d442f4bbb 100644
--- a/fs/btrfs/extent_map.h
+++ b/fs/btrfs/extent_map.h
@@ -59,4 +59,5 @@ struct extent_map *alloc_extent_map(gfp_t mask);
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);
#endif