1 files changed, 16 insertions, 0 deletions

diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 66e21a4e9ea2..db41315f11eb 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -43,6 +43,22 @@ const char* btrfs_compress_type2str(enum btrfs_compression_type type)
         return NULL;
 }
 
+bool btrfs_compress_is_valid_type(const char *str, size_t len)
+{
+        int i;
+
+        for (i = 1; i < ARRAY_SIZE(btrfs_compress_types); i++) {
+                size_t comp_len = strlen(btrfs_compress_types[i]);
+
+                if (len < comp_len)
+                        continue;
+
+                if (!strncmp(btrfs_compress_types[i], str, comp_len))
+                        return true;
+        }
+        return false;
+}
+
 static int btrfs_decompress_bio(struct compressed_bio *cb);
 
 static inline int compressed_bio_size(struct btrfs_fs_info *fs_info,