1 files changed, 2 insertions, 1 deletions

diff --git a/fs/btrfs/compression.h b/fs/btrfs/compression.h
index 9976fe0f7526..2035b8eb1290 100644
--- a/fs/btrfs/compression.h
+++ b/fs/btrfs/compression.h
@@ -61,7 +61,7 @@ struct compressed_bio {
          * the start of a variable length array of checksums only
          * used by reads
          */
-        u32 sums;
+        u8 sums[];
 };
 
 static inline unsigned int btrfs_compress_type(unsigned int type_level)
@@ -173,6 +173,7 @@ extern const struct btrfs_compress_op btrfs_lzo_compress;
 extern const struct btrfs_compress_op btrfs_zstd_compress;
 
 const char* btrfs_compress_type2str(enum btrfs_compression_type type);
+bool btrfs_compress_is_valid_type(const char *str, size_t len);
 
 int btrfs_compress_heuristic(struct inode *inode, u64 start, u64 end);