Re: [PATCH][RFC] PM / Hibernate: Feed NMI wathdog when creating snapshot

2017-08-16 Thread Michal Hocko
On Wed 16-08-17 00:01:08, Chen Yu wrote: > Hi Michal, > On Tue, Aug 15, 2017 at 02:41:19PM +0200, Michal Hocko wrote: [...] > > Moreover why don't you need to touch_nmi_watchdog in the loop over all > > pfns in the zone (right above this loop)? > As the NMI was triggered when checking the free_list

Re: [PATCH][RFC] PM / Hibernate: Feed NMI wathdog when creating snapshot

2017-08-15 Thread Chen Yu
On Tue, Aug 15, 2017 at 02:41:19PM +0200, Michal Hocko wrote: > On Tue 15-08-17 01:19:16, Chen Yu wrote: > [...] > > @@ -2561,8 +2562,10 @@ void mark_free_pages(struct zone *zone) > > unsigned long i; > > > > pfn = page_to_pfn(page); > > -

Re: [PATCH][RFC] PM / Hibernate: Feed NMI wathdog when creating snapshot

2017-08-15 Thread Chen Yu
Hi Michal, On Tue, Aug 15, 2017 at 02:41:19PM +0200, Michal Hocko wrote: > On Tue 15-08-17 01:19:16, Chen Yu wrote: > [...] > > @@ -2561,8 +2562,10 @@ void mark_free_pages(struct zone *zone) > > unsigned long i; > > > > pfn = page_to_pfn(page); > > -

Re: [PATCH][RFC] PM / Hibernate: Feed NMI wathdog when creating snapshot

2017-08-15 Thread Michal Hocko
On Tue 15-08-17 01:19:16, Chen Yu wrote: [...] > @@ -2561,8 +2562,10 @@ void mark_free_pages(struct zone *zone) > unsigned long i; > > pfn = page_to_pfn(page); > - for (i = 0; i < (1UL << order); i++) > + for (i =