Re: [PATCHv2 19/28] thp: run vma_adjust_trans_huge() outside i_mmap_rwsem

From: Dave Hansen
Date: Fri Feb 12 2016 - 13:50:08 EST


On 02/11/2016 06:21 AM, Kirill A. Shutemov wrote:
> vma_addjust_trans_huge() splits pmd if it's crossing VMA boundary.
> During split we munlock the huge page which requires rmap walk.
> rmap wants to take the lock on its own.

Which lock are you talking about here?