Andrew,
On Thu 09-11-17 13:35:53, Joonsoo Kim wrote:
> On Wed, Nov 08, 2017 at 03:21:06PM +0100, Michal Hocko wrote:
> > On Wed 08-11-17 16:59:56, Joonsoo Kim wrote:
> > > On Tue, Nov 07, 2017 at 10:47:30AM +0100, Michal Hocko wrote:
[...]
> > > > I suspec this goes all the way down to when page_e
On Wed, Nov 08, 2017 at 03:21:06PM +0100, Michal Hocko wrote:
> On Wed 08-11-17 16:59:56, Joonsoo Kim wrote:
> > On Tue, Nov 07, 2017 at 10:47:30AM +0100, Michal Hocko wrote:
> > > [CC Joonsoo]
> > >
> > > On Tue 07-11-17 18:41:31, Jaewon Kim wrote:
> > > > online_page_ext and page_ext_init alloca
On Wed 08-11-17 16:59:56, Joonsoo Kim wrote:
> On Tue, Nov 07, 2017 at 10:47:30AM +0100, Michal Hocko wrote:
> > [CC Joonsoo]
> >
> > On Tue 07-11-17 18:41:31, Jaewon Kim wrote:
> > > online_page_ext and page_ext_init allocate page_ext for each section, but
> > > they do not allocate if the first
On Tue, Nov 07, 2017 at 10:47:30AM +0100, Michal Hocko wrote:
> [CC Joonsoo]
>
> On Tue 07-11-17 18:41:31, Jaewon Kim wrote:
> > online_page_ext and page_ext_init allocate page_ext for each section, but
> > they do not allocate if the first PFN is !pfn_present(pfn) or
> > !pfn_valid(pfn). Then sec
[CC Joonsoo]
On Tue 07-11-17 18:41:31, Jaewon Kim wrote:
> online_page_ext and page_ext_init allocate page_ext for each section, but
> they do not allocate if the first PFN is !pfn_present(pfn) or
> !pfn_valid(pfn). Then section->page_ext remains as NULL. lookup_page_ext
> checks NULL only if CONF
online_page_ext and page_ext_init allocate page_ext for each section, but
they do not allocate if the first PFN is !pfn_present(pfn) or
!pfn_valid(pfn). Then section->page_ext remains as NULL. lookup_page_ext
checks NULL only if CONFIG_DEBUG_VM is enabled. For a valid PFN,
__set_page_owner will try
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