On Wed, 9 Nov 2005, KAMEZAWA Hiroyuki wrote:
> Christoph Lameter wrote:
> > + err = migrate_pages(pagelist, &newlist, &moved, &failed);
> > +
> > + putback_lru_pages(&moved); /* Call release pages instead ?? */
> > +
> > + if (err >= 0 && list_empty(&newlist) && !list_empty(pagelist))
> > + goto redo;
>
>
> Here, list_empty(&newlist) is needed ?
> For checking permanent failure case, list_empty(&failed) looks better.
We only allocate 256 pages which are on the newlist. If the newlist is
empty but there are still pages that could be migrated
(!list_empty(pagelist)) then we need to allocate more pages and call
migrate_pages() again.
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