On Sat, Mar 7, 2015 at 10:33 AM, Linus Torvalds
wrote:
>
> Completely untested, but that "just
> or in the new protection bits" is what pnf_pte() does just a few lines
> above this.
Hmm. Looking at this, we do *not* want to set _PAGE_ACCESSED when we
turn a page into PROT_NONE or mark
On Sat, Mar 7, 2015 at 7:20 AM, Mel Gorman wrote:
> pmd = pmd_modify(pmd, vma->vm_page_prot);
> + pmd = pmd_mkyoung(pmd);
Hmm. I *thought* this should be unnecessary. vm_page_prot alreadty has
the accessed bit set, and we kind of depend on the initial page table
setup and mk_pte() a
Base PTEs are marked young when the NUMA hinting information is cleared
but the same does not happen for huge pages which this patch addresses.
Note that migrated pages are not marked young as the base page migration
code does not assume that migrated pages have been referenced. This could
be addre
