On Mon, May 30, 2016 at 11:46:05AM +0200, Vlastimil Babka wrote: > On 05/30/2016 11:01 AM, Mel Gorman wrote: > >From: Vlastimil Babka <vbabka@xxxxxxx> > > > >In DEBUG_VM kernel, we can hit infinite loop for order == 0 in > >buffered_rmqueue() when check_new_pcp() returns 1, because the bad page is > >never removed from the pcp list. Fix this by removing the page before retrying. > >Also we don't need to check if page is non-NULL, because we simply grab it from > >the list which was just tested for being non-empty. > > > >Fixes: http://www.ozlabs.org/~akpm/mmotm/broken-out/mm-page_alloc-defer-debugging-checks-of-freed-pages-until-a-pcp-drain.patch > > That was a wrong one, which I corrected later. Also it's no longer mmotm. > Correction below: > > Fixes: 479f854a207c ("mm, page_alloc: defer debugging checks of pages > allocated from the PCP") > Yes sorry, I meant to clean it up but had just re-read the patch itself, confirmed it was missing and was still required. -- Mel Gorman SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>