On Fri, Feb 12, 2016 at 10:50:02AM -0800, Dave Hansen wrote: > 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? i_mmap_rwsem. It's in patch subject. I'll update body. -- Kirill A. Shutemov -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>