16 Oct
2018
16 Oct
'18
11:16 p.m.
On Tue, 16 Oct 2018 19:11:49 -0400 Andrea Arcangeli aarcange@redhat.com wrote:
This was a severe regression compared to previous kernels that made important workloads unusable and it starts when __GFP_THISNODE was added to THP allocations under MADV_HUGEPAGE. It is not a significant risk to go to the previous behavior before __GFP_THISNODE was added, it worked like that for years.
5265047ac301 ("mm, thp: really limit transparent hugepage allocation to local node") was April 2015. That's a long time for a "severe regression" to go unnoticed?