Re: [PATCH 1/4] mm: introduce debug_pagealloc_map_pages() helper

2020-10-26 Thread David Hildenbrand
On 26.10.20 12:54, Mike Rapoport wrote: > On Mon, Oct 26, 2020 at 12:05:13PM +0100, David Hildenbrand wrote: >> On 25.10.20 11:15, Mike Rapoport wrote: >>> From: Mike Rapoport >>> >>> When CONFIG_DEBUG_PAGEALLOC is enabled, it unmaps pages from the >>> kernel direct mapping after free_pages(). The

Re: [PATCH 1/4] mm: introduce debug_pagealloc_map_pages() helper

2020-10-26 Thread Mike Rapoport
On Mon, Oct 26, 2020 at 12:05:13PM +0100, David Hildenbrand wrote: > On 25.10.20 11:15, Mike Rapoport wrote: > > From: Mike Rapoport > > > > When CONFIG_DEBUG_PAGEALLOC is enabled, it unmaps pages from the > > kernel direct mapping after free_pages(). The pages than need to be > > mapped back bef

Re: [PATCH 1/4] mm: introduce debug_pagealloc_map_pages() helper

2020-10-26 Thread David Hildenbrand
On 25.10.20 11:15, Mike Rapoport wrote: > From: Mike Rapoport > > When CONFIG_DEBUG_PAGEALLOC is enabled, it unmaps pages from the > kernel direct mapping after free_pages(). The pages than need to be > mapped back before they could be used. Theese mapping operations use > __kernel_map_pages() g