Re: RFC: radix tree safety

[Jonathan Corbet]

Andrew Morton <akpm@xxxxxxxx> wrote:

> I don't really see the need - if someone goes and overindexes the data
> structure's capacity then they have a bug and hopefully that'll turn up in
> testing and will get fixed.
> 
> Or am I missing something obvious which makes radix-trees particularly
> dangerous or subtle??

There's nothing in the interface documentation which says that a tag is
an index to anything.  It's an integer value which can be attached to an
item in a radix tree.  One has to look into the source to see the
limitation built into it.  

If we don't want the tests, fine, but it might make sense to fix the
interface documentation, at least, to note that "tag" is not an
arbitrary integer value.

jon
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/