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Re: [Xen-devel] page_list_splice
| To: | Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>, "Xen-Devel (E-mail)" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] page_list_splice |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Thu, 05 Mar 2009 20:46:06 +0000 |
| Cc: | |
| Delivery-date: | Thu, 05 Mar 2009 12:46:34 -0800 |
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| Thread-topic: | [Xen-devel] page_list_splice |
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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 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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