btrfs: get fs_info from eb in btrfs_check_leaf_relaxed

We can read fs_info from extent buffer and can drop it from the
parameters.
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/disk-io.c

@@ -4101,7 +4101,7 @@ void btrfs_mark_buffer_dirty(struct extent_buffer *buf)
 	 * So here we should only check item pointers, not item data.
 	 */
 	if (btrfs_header_level(buf) == 0 &&
-	    btrfs_check_leaf_relaxed(fs_info, buf)) {
+	    btrfs_check_leaf_relaxed(buf)) {
 		btrfs_print_leaf(buf);
 		ASSERT(0);
 	}

fs/btrfs/tree-checker.c

@@ -968,8 +968,7 @@ int btrfs_check_leaf_full(struct extent_buffer *leaf)
 	return check_leaf(leaf, true);
 }
 
-int btrfs_check_leaf_relaxed(struct btrfs_fs_info *fs_info,
-			     struct extent_buffer *leaf)
+int btrfs_check_leaf_relaxed(struct extent_buffer *leaf)
 {
 	return check_leaf(leaf, false);
 }

fs/btrfs/tree-checker.h

@@ -20,8 +20,7 @@ int btrfs_check_leaf_full(struct extent_buffer *leaf);
  * Less strict leaf checker.
  * Will only check item pointers, not reading item data.
  */
-int btrfs_check_leaf_relaxed(struct btrfs_fs_info *fs_info,
-			     struct extent_buffer *leaf);
+int btrfs_check_leaf_relaxed(struct extent_buffer *leaf);
 int btrfs_check_node(struct btrfs_fs_info *fs_info, struct extent_buffer *node);
 
 int btrfs_check_chunk_valid(struct btrfs_fs_info *fs_info,