btrfs: ref-verify: Remove unused parameter from walk_up_tree() to kill warning (02cfe779) · Commits · 戴 / test

With gcc-4.1.2: fs/btrfs/ref-verify.c: In function ‘btrfs_build_ref_tree’: fs/btrfs/ref-verify.c:1017: warning: ‘root’ is used uninitialized in this function The variable is indeed passed uninitialized, but it is never used by the callee. However, not all versions of gcc are smart enough to notice. Hence remove the unused parameter from walk_up_tree() to silence the compiler warning. Signed-off-by:

Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by:

David Sterba <dsterba@suse.com>

fs/btrfs/ref-verify.c

+2 −4

Original line number	Diff line number	Diff line
		@@ -606,8 +606,7 @@ static int walk_down_tree(struct btrfs_root root, struct btrfs_path path,
		}

		/* Walk up to the next node that needs to be processed */
		static int walk_up_tree(struct btrfs_root root, struct btrfs_path path,
		int *level)
		static int walk_up_tree(struct btrfs_path path, int level)
		{
		int l;

		@@ -984,7 +983,6 @@ void btrfs_free_ref_tree_range(struct btrfs_fs_info *fs_info, u64 start,
		int btrfs_build_ref_tree(struct btrfs_fs_info *fs_info)
		{
		struct btrfs_path *path;
		struct btrfs_root *root;
		struct extent_buffer *eb;
		u64 bytenr = 0, num_bytes = 0;
		int ret, level;
		@@ -1014,7 +1012,7 @@ int btrfs_build_ref_tree(struct btrfs_fs_info *fs_info)
		&bytenr, &num_bytes);
		if (ret)
		break;
		ret = walk_up_tree(root, path, &level);
		ret = walk_up_tree(path, &level);
		if (ret < 0)
		break;
		if (ret > 0) {

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