The mapping between data objects (one-to-one or one-to-many) seem to be
the most troublesome stuff to deal with when introducing new data
structures. But if there is never the need to lookup an object from a
page, then maybe we can use a linkage structure like this:
struct vm_page_linkage {
TAILQ_ENTRY(vm_page_linkage) pageq;
struct vm_page * page;
}
-Zhihui
On Thu, 7 Mar 2002, Alfred Perlstein wrote:
> * Zhihui Zhang <[EMAIL PROTECTED]> [020307 08:28] wrote:
> >
> > Is there any fundamental reason why a page can not be owned by more than
> > one VM object? If that was the case, the bogus page stuff in vfs_bio.c
> > could be made cleaner IMHO.
>
> There is only enough linkage in the vm page to support it being associated
> with one object. see src/sys/vm/vm_page.h
>
> -Alfred Perlstein [[EMAIL PROTECTED]]
>
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