Re: [Xen-devel] page_list_splice

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 05/03/2009 20:23, "Dan Magenheimer" <dan.magenheimer@xxxxxxxxxx> wrote:

> Without this clause, I get a null-pointer (actually null+4)
> dereference... I think I must be missing some basic
> difference between normal list code and page_list code.

An empty list has NULL pointers in its list_head. You therefore set at=NULL,
and then dereference at->list.prev later. So I guess you do need that second
if stmt.

 -- Keir



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