1 files changed, 8 insertions, 0 deletions

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 251db68148b2..fdb8f4486e85 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -394,6 +394,14 @@ static noinline int compress_file_range(struct inode *inode,
             (start > 0 || end + 1 < BTRFS_I(inode)->disk_i_size))
                 btrfs_add_inode_defrag(NULL, inode);
 
+        /*
+         * skip compression for a small file range(<=blocksize) that
+         * isn't an inline extent, since it dosen't save disk space at all.
+         */
+        if ((end - start + 1) <= blocksize &&
+            (start > 0 || end + 1 < BTRFS_I(inode)->disk_i_size))
+                goto cleanup_and_bail_uncompressed;
+
         actual_end = min_t(u64, isize, end + 1);
 again:
         will_compress = 0;