On Thu, 2012-09-06 at 07:55 -0700, Josh Triplett wrote:

quoted

My solution to making 'break' work in the iterator is:

	for (bkt = 0, node = NULL; bkt < HASH_SIZE(name) && node == NULL; bkt++)
		hlist_for_each_entry(obj, node, &name[bkt], member)

Looks reasonable.  However, it would break (or rather, not break) on
code like this:

	hash_for_each_entry(...) {
		if (...) {
			foo(node);
			node = NULL;
			break;
		}
	}

Hiding the double loop still seems error-prone.

We've already had this conversation ;-)  A guess a big comment is in
order:

/*
 * NOTE!  Although this is a double loop, 'break' still works because of
 *        the 'node == NULL' condition in the outer loop. On break of
 *        the inner loop, node will be !NULL, and the outer loop will
 *        exit as well.
 */

-- Steve