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? -- 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>