On Tue, Oct 27, 2020 at 2:32 PM Vlastimil Babka wrote:
>
> On 10/27/20 12:05 PM, Vlastimil Babka wrote:
> > On 10/27/20 10:10 AM, David Hildenbrand wrote:
> >> On 26.10.20 18:33, Vlastimil Babka wrote:
> >>> prep_new_page() will always zero a new page (regardless of __GFP_ZERO)
> >>> when
> >>>
On 27.10.20 18:41, Vlastimil Babka wrote:
On 10/27/20 2:32 PM, Vlastimil Babka wrote:
So my conclusion:
- We can remove PAGE_POISONING_NO_SANITY because it only makes sense with
PAGE_POISONING_ZERO, and we can use init_on_free instead
Note for this we first have to make sanity checking
On 10/27/20 2:32 PM, Vlastimil Babka wrote:
So my conclusion:
- We can remove PAGE_POISONING_NO_SANITY because it only makes sense with
PAGE_POISONING_ZERO, and we can use init_on_free instead
Note for this we first have to make sanity checking compatible with
hibernation, but that should be
On 10/27/20 12:05 PM, Vlastimil Babka wrote:
On 10/27/20 10:10 AM, David Hildenbrand wrote:
On 26.10.20 18:33, Vlastimil Babka wrote:
prep_new_page() will always zero a new page (regardless of __GFP_ZERO) when
init_on_alloc is enabled, but will also always skip zeroing if the page was
already
On 10/27/20 10:10 AM, David Hildenbrand wrote:
On 26.10.20 18:33, Vlastimil Babka wrote:
prep_new_page() will always zero a new page (regardless of __GFP_ZERO) when
init_on_alloc is enabled, but will also always skip zeroing if the page was
already zeroed on free by init_on_free or page
On 26.10.20 18:33, Vlastimil Babka wrote:
prep_new_page() will always zero a new page (regardless of __GFP_ZERO) when
init_on_alloc is enabled, but will also always skip zeroing if the page was
already zeroed on free by init_on_free or page poisoning.
The latter check implemented by
prep_new_page() will always zero a new page (regardless of __GFP_ZERO) when
init_on_alloc is enabled, but will also always skip zeroing if the page was
already zeroed on free by init_on_free or page poisoning.
The latter check implemented by free_pages_prezeroed() can involve two
different static
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