Re: [PATCH v3 2/6] mm: Teach pfn_to_online_page() to consider subsection validity

2021-01-13 Thread Dan Williams
On Wed, Jan 13, 2021 at 12:29 AM David Hildenbrand wrote: > > On 13.01.21 08:35, Dan Williams wrote: > > pfn_section_valid() determines pfn validity on subsection granularity > > where pfn_valid() may be limited to coarse section granularity. > > Explicitly validate subsections after pfn_valid()

Re: [PATCH v3 2/6] mm: Teach pfn_to_online_page() to consider subsection validity

2021-01-13 Thread Oscar Salvador
On Tue, Jan 12, 2021 at 11:35:27PM -0800, Dan Williams wrote: > pfn_section_valid() determines pfn validity on subsection granularity > where pfn_valid() may be limited to coarse section granularity. > Explicitly validate subsections after pfn_valid() succeeds. > > Fixes: b13bc35193d9

Re: [PATCH v3 2/6] mm: Teach pfn_to_online_page() to consider subsection validity

2021-01-13 Thread David Hildenbrand
On 13.01.21 08:35, Dan Williams wrote: > pfn_section_valid() determines pfn validity on subsection granularity > where pfn_valid() may be limited to coarse section granularity. > Explicitly validate subsections after pfn_valid() succeeds. > > Fixes: b13bc35193d9 ("mm/hotplug: invalid PFNs from

[PATCH v3 2/6] mm: Teach pfn_to_online_page() to consider subsection validity

2021-01-12 Thread Dan Williams
pfn_section_valid() determines pfn validity on subsection granularity where pfn_valid() may be limited to coarse section granularity. Explicitly validate subsections after pfn_valid() succeeds. Fixes: b13bc35193d9 ("mm/hotplug: invalid PFNs from pfn_to_online_page()") Cc: Qian Cai Cc: Michal