On 07/27/2017 06:27 PM, Michal Hocko wrote:
On Thu 27-07-17 14:07:56, Aneesh Kumar K.V wrote:
Instead of marking the pmd ready for split, invalidate the pmd. This should
take care of powerpc requirement.
which is?
I can add the commit which explain details here. Or add more details
from the older commit here.
c777e2a8b65420b31dac28a453e35be984f5808b
powerpc/mm: Fix Multi hit ERAT cause by recent THP update
Only side effect is that we mark the pmd
invalid early. This can result in us blocking access to the page a bit longer
if we race against a thp split.
Again, this doesn't tell me what is the problem and why do we care.
Primary motivation is code reduction.
7 files changed, 35 insertions(+), 87 deletions(-)
-aneesh
