Commit fc0e7387 authored by Rong Tao's avatar Rong Tao Committed by Andrew Morton
Browse files

lib/radix-tree.c: fix uninitialized variable compilation warning 

We need to set an initial value for offset to eliminate compilation
warning.

How to reproduce warning:

$ make -C tools/testing/radix-tree
radix-tree.c: In function `radix_tree_tag_clear':
radix-tree.c:1046:17: warning: `offset' may be used uninitialized in this function [-Wmaybe-uninitialized]
 1046 |                 node_tag_clear(root, parent, tag, offset);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Link: https://lkml.kernel.org/r/tencent_DF74099967595DCEA93CBDC28D062026180A@qq.com


Signed-off-by: default avatarRong Tao <rongtao@cestc.cn>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 08fc35f3

lib/radix-tree.c

+1 −1
Original line number Diff line number Diff line
@@ -1029,7 +1029,7 @@ void *radix_tree_tag_clear(struct radix_tree_root *root, 
{

	struct radix_tree_node *node, *parent;

	unsigned long maxindex;

	int offset;

	int offset = 0;



	radix_tree_load_root(root, &node, &maxindex);

	if (index > maxindex)