static inline bool d_same_name(const struct dentry *dentry,
				const struct dentry *parent,
				const struct qstr *name)
{
	if (likely(!(parent->d_flags & DCACHE_OP_COMPARE))) {
		if (dentry->d_name.len != name->len)
			return false;
		return dentry_cmp(dentry, name->name, name->len) == 0;
	}
	return parent->d_op->d_compare(dentry,
				       dentry->d_name.len, dentry->d_name.name,
				       name) == 0;
}

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.