Although BTRFS_NAME_LEN and XATTR_NAME_MAX is the same value (255),
max(BTRFS_NAME_LEN, XATTR_NAME_MAX) should be optimized as const at
runtime.
However S390x' arch dependent option "-mwarn-dynamicstack" could still
report it as dyanamic stack allocation.
Just use BTRFS_NAME_LEN directly to avoid such false alert.
Signed-off-by: Qu Wenruo <wqu@xxxxxxxx>
---
fs/btrfs/tree-checker.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/btrfs/tree-checker.c b/fs/btrfs/tree-checker.c
index db835635372f..4c045609909b 100644
--- a/fs/btrfs/tree-checker.c
+++ b/fs/btrfs/tree-checker.c
@@ -336,7 +336,7 @@ static int check_dir_item(struct btrfs_fs_info *fs_info,
*/
if (key->type == BTRFS_DIR_ITEM_KEY ||
key->type == BTRFS_XATTR_ITEM_KEY) {
- char namebuf[max(BTRFS_NAME_LEN, XATTR_NAME_MAX)];
+ char namebuf[BTRFS_NAME_LEN];
read_extent_buffer(leaf, namebuf,
(unsigned long)(di + 1), name_len);
--
2.19.0
