Re: [External] Re: [PATCH v5 00/21] Free some vmemmap pages of hugetlb page

2020-11-23 Thread Michal Hocko
On Mon 23-11-20 12:45:13, Matthew Wilcox wrote: > On Mon, Nov 23, 2020 at 11:42:58AM +0100, Michal Hocko wrote: > > On Mon 23-11-20 18:36:33, Muchun Song wrote: > > > > No I really mean that pfn_to_page will give you a struct page pointer > > > > from pages which you release from the vmemmap page t

Re: [External] Re: [PATCH v5 00/21] Free some vmemmap pages of hugetlb page

2020-11-23 Thread Matthew Wilcox
On Mon, Nov 23, 2020 at 11:42:58AM +0100, Michal Hocko wrote: > On Mon 23-11-20 18:36:33, Muchun Song wrote: > > > No I really mean that pfn_to_page will give you a struct page pointer > > > from pages which you release from the vmemmap page tables. Those pages > > > might get reused as soon sa the

Re: [External] Re: [PATCH v5 00/21] Free some vmemmap pages of hugetlb page

2020-11-23 Thread Michal Hocko
On Mon 23-11-20 20:40:40, Muchun Song wrote: > On Mon, Nov 23, 2020 at 8:18 PM Michal Hocko wrote: > > > > On Mon 23-11-20 20:07:23, Muchun Song wrote: > > > On Mon, Nov 23, 2020 at 7:32 PM Michal Hocko wrote: > > [...] > > > > > > > > No I really mean that pfn_to_page will give you a struct page

Re: [External] Re: [PATCH v5 00/21] Free some vmemmap pages of hugetlb page

2020-11-23 Thread Muchun Song
On Mon, Nov 23, 2020 at 8:45 PM Matthew Wilcox wrote: > > On Mon, Nov 23, 2020 at 11:42:58AM +0100, Michal Hocko wrote: > > On Mon 23-11-20 18:36:33, Muchun Song wrote: > > > > No I really mean that pfn_to_page will give you a struct page pointer > > > > from pages which you release from the vmemm

Re: [External] Re: [PATCH v5 00/21] Free some vmemmap pages of hugetlb page

2020-11-23 Thread Muchun Song
On Mon, Nov 23, 2020 at 8:18 PM Michal Hocko wrote: > > On Mon 23-11-20 20:07:23, Muchun Song wrote: > > On Mon, Nov 23, 2020 at 7:32 PM Michal Hocko wrote: > [...] > > > > > > > No I really mean that pfn_to_page will give you a struct page > > > > > > > pointer > > > > > > > from pages which yo

Re: [External] Re: [PATCH v5 00/21] Free some vmemmap pages of hugetlb page

2020-11-23 Thread Michal Hocko
On Mon 23-11-20 20:07:23, Muchun Song wrote: > On Mon, Nov 23, 2020 at 7:32 PM Michal Hocko wrote: [...] > > > > > > No I really mean that pfn_to_page will give you a struct page > > > > > > pointer > > > > > > from pages which you release from the vmemmap page tables. Those > > > > > > pages >

Re: [External] Re: [PATCH v5 00/21] Free some vmemmap pages of hugetlb page

2020-11-23 Thread Muchun Song
On Mon, Nov 23, 2020 at 7:32 PM Michal Hocko wrote: > > On Mon 23-11-20 19:16:18, Muchun Song wrote: > > On Mon, Nov 23, 2020 at 6:43 PM Michal Hocko wrote: > > > > > > On Mon 23-11-20 18:36:33, Muchun Song wrote: > > > > On Mon, Nov 23, 2020 at 5:43 PM Michal Hocko wrote: > > > > > > > > > > On

Re: [External] Re: [PATCH v5 00/21] Free some vmemmap pages of hugetlb page

2020-11-23 Thread Michal Hocko
On Mon 23-11-20 19:16:18, Muchun Song wrote: > On Mon, Nov 23, 2020 at 6:43 PM Michal Hocko wrote: > > > > On Mon 23-11-20 18:36:33, Muchun Song wrote: > > > On Mon, Nov 23, 2020 at 5:43 PM Michal Hocko wrote: > > > > > > > > On Mon 23-11-20 16:53:53, Muchun Song wrote: > > > > > On Mon, Nov 23,

Re: [External] Re: [PATCH v5 00/21] Free some vmemmap pages of hugetlb page

2020-11-23 Thread Muchun Song
On Mon, Nov 23, 2020 at 6:43 PM Michal Hocko wrote: > > On Mon 23-11-20 18:36:33, Muchun Song wrote: > > On Mon, Nov 23, 2020 at 5:43 PM Michal Hocko wrote: > > > > > > On Mon 23-11-20 16:53:53, Muchun Song wrote: > > > > On Mon, Nov 23, 2020 at 3:40 PM Michal Hocko wrote: > > > > > > > > > > On

Re: [External] Re: [PATCH v5 00/21] Free some vmemmap pages of hugetlb page

2020-11-23 Thread Michal Hocko
On Mon 23-11-20 18:36:33, Muchun Song wrote: > On Mon, Nov 23, 2020 at 5:43 PM Michal Hocko wrote: > > > > On Mon 23-11-20 16:53:53, Muchun Song wrote: > > > On Mon, Nov 23, 2020 at 3:40 PM Michal Hocko wrote: > > > > > > > > On Fri 20-11-20 23:44:26, Muchun Song wrote: > > > > > On Fri, Nov 20,

Re: [External] Re: [PATCH v5 00/21] Free some vmemmap pages of hugetlb page

2020-11-23 Thread Muchun Song
On Mon, Nov 23, 2020 at 5:43 PM Michal Hocko wrote: > > On Mon 23-11-20 16:53:53, Muchun Song wrote: > > On Mon, Nov 23, 2020 at 3:40 PM Michal Hocko wrote: > > > > > > On Fri 20-11-20 23:44:26, Muchun Song wrote: > > > > On Fri, Nov 20, 2020 at 9:11 PM Michal Hocko wrote: > > > > > > > > > > On

Re: [External] Re: [PATCH v5 00/21] Free some vmemmap pages of hugetlb page

2020-11-23 Thread Michal Hocko
On Mon 23-11-20 16:53:53, Muchun Song wrote: > On Mon, Nov 23, 2020 at 3:40 PM Michal Hocko wrote: > > > > On Fri 20-11-20 23:44:26, Muchun Song wrote: > > > On Fri, Nov 20, 2020 at 9:11 PM Michal Hocko wrote: > > > > > > > > On Fri 20-11-20 20:40:46, Muchun Song wrote: > > > > > On Fri, Nov 20,

Re: [External] Re: [PATCH v5 00/21] Free some vmemmap pages of hugetlb page

2020-11-23 Thread Muchun Song
On Mon, Nov 23, 2020 at 3:40 PM Michal Hocko wrote: > > On Fri 20-11-20 23:44:26, Muchun Song wrote: > > On Fri, Nov 20, 2020 at 9:11 PM Michal Hocko wrote: > > > > > > On Fri 20-11-20 20:40:46, Muchun Song wrote: > > > > On Fri, Nov 20, 2020 at 4:42 PM Michal Hocko wrote: > > > > > > > > > > On

Re: [External] Re: [PATCH v5 00/21] Free some vmemmap pages of hugetlb page

2020-11-22 Thread Michal Hocko
On Fri 20-11-20 23:44:26, Muchun Song wrote: > On Fri, Nov 20, 2020 at 9:11 PM Michal Hocko wrote: > > > > On Fri 20-11-20 20:40:46, Muchun Song wrote: > > > On Fri, Nov 20, 2020 at 4:42 PM Michal Hocko wrote: > > > > > > > > On Fri 20-11-20 14:43:04, Muchun Song wrote: > > > > [...] > > > > > >

Re: [External] Re: [PATCH v5 00/21] Free some vmemmap pages of hugetlb page

2020-11-21 Thread Muchun Song
On Sat, Nov 21, 2020 at 1:47 AM Mike Kravetz wrote: > > On 11/20/20 1:43 AM, David Hildenbrand wrote: > > On 20.11.20 10:39, Michal Hocko wrote: > >> On Fri 20-11-20 10:27:05, David Hildenbrand wrote: > >>> On 20.11.20 09:42, Michal Hocko wrote: > On Fri 20-11-20 14:43:04, Muchun Song wrote:

Re: [External] Re: [PATCH v5 00/21] Free some vmemmap pages of hugetlb page

2020-11-20 Thread Muchun Song
On Fri, Nov 20, 2020 at 9:11 PM Michal Hocko wrote: > > On Fri 20-11-20 20:40:46, Muchun Song wrote: > > On Fri, Nov 20, 2020 at 4:42 PM Michal Hocko wrote: > > > > > > On Fri 20-11-20 14:43:04, Muchun Song wrote: > > > [...] > > > > > > Thanks for improving the cover letter and providing some nu

Re: [External] Re: [PATCH v5 00/21] Free some vmemmap pages of hugetlb page

2020-11-20 Thread Michal Hocko
On Fri 20-11-20 20:40:46, Muchun Song wrote: > On Fri, Nov 20, 2020 at 4:42 PM Michal Hocko wrote: > > > > On Fri 20-11-20 14:43:04, Muchun Song wrote: > > [...] > > > > Thanks for improving the cover letter and providing some numbers. I have > > only glanced through the patchset because I didn't

Re: [External] Re: [PATCH v5 00/21] Free some vmemmap pages of hugetlb page

2020-11-20 Thread Muchun Song
On Fri, Nov 20, 2020 at 4:42 PM Michal Hocko wrote: > > On Fri 20-11-20 14:43:04, Muchun Song wrote: > [...] > > Thanks for improving the cover letter and providing some numbers. I have > only glanced through the patchset because I didn't really have more time > to dive depply into them. > > Overa