On Wed 16-12-15 16:29:30, Kirill A. Shutemov wrote:
> The VM_BUG_ON_PAGE() would catch such cases if any still exists.
Thanks, this better than a silent breakage.
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
> ---
> mm/vmscan.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/mm/vmscan.c b/mm/vmscan.c
> index 964390906167..05dd182f04fd 100644
> --- a/mm/vmscan.c
> +++ b/mm/vmscan.c
> @@ -1436,6 +1436,7 @@ int isolate_lru_page(struct page *page)
> int ret = -EBUSY;
>
> VM_BUG_ON_PAGE(!page_count(page), page);
> + VM_BUG_ON_PAGE(PageTail(page), page);
>
> if (PageLRU(page)) {
> struct zone *zone = page_zone(page);
> --
> 2.6.2
--
Michal Hocko
SUSE Labs
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