Messages in this thread | | | Date | Mon, 11 Jun 2012 16:41:32 +0200 | From | Andrea Arcangeli <> | Subject | Re: [PATCH] mm: do not use page_count without a page pin |
| |
Hi Minchan,
On Mon, Jun 11, 2012 at 10:30:43PM +0900, Minchan Kim wrote: > AFAIUC, you mean we have to increase reference count of head page? > If so, it's not in __count_immobile_pages because it is already race-likely function > so it shouldn't be critical although race happens.
I meant, shouldn't we take into account the full size? If it's in the lru the whole thing can be moved away.
if (!PageLRU(page)) { nr_pages = hpage_nr_pages(page); barrier(); found += nr_pages; iter += nr_pages-1; }
| |