V9FS_INO_INVALID_ATTR
v9inode->cache_validity |= V9FS_INO_INVALID_ATTR;
if (v9inode->cache_validity & V9FS_INO_INVALID_ATTR) {
if (v9inode->cache_validity & V9FS_INO_INVALID_ATTR) {
v9inode->cache_validity &= ~V9FS_INO_INVALID_ATTR;
v9inode->cache_validity &= ~V9FS_INO_INVALID_ATTR;