On Wed, 2019-09-18 at 14:53:28 UTC, "Aneesh Kumar K.V" wrote:
> __find_linux_mm_pte return a page table entry pointer walking the
> page table without holding locks. To make it safe against a THP
> split and collapse, we disable interrupts around the lockless
> page table walk. We need to keep the
__find_linux_mm_pte return a page table entry pointer walking the
page table without holding locks. To make it safe against a THP
split and collapse, we disable interrupts around the lockless
page table walk. We need to keep the interrupts disabled as long
as we use the page table entry pointer.
C
