diff --git a/fs/btrfs/lru_cache.h b/fs/btrfs/lru_cache.h
index de3e18bce24a..00328c856be6 100644
--- a/fs/btrfs/lru_cache.h
+++ b/fs/btrfs/lru_cache.h
@@ -55,11 +55,6 @@ static inline unsigned int btrfs_lru_cache_size(const struct btrfs_lru_cache *ca
 	return cache->size;
 }
 
-static inline bool btrfs_lru_cache_is_full(const struct btrfs_lru_cache *cache)
-{
-	return cache->size >= cache->max_size;
-}
-
 static inline struct btrfs_lru_cache_entry *btrfs_lru_cache_lru_entry(
 					      struct btrfs_lru_cache *cache)
 {