On Wed, Aug 14, 2019 at 11:19:37AM +0200, Vlastimil Babka wrote: >On 8/14/19 8:57 AM, Wei Yang wrote: >> On Tue, Aug 13, 2019 at 10:16:11PM -0700, Christoph Hellwig wrote: >>>Btw, is there any good reason we don't use a list_head for vma linkage? >> >> Not sure, maybe there is some historical reason? > >Seems it was single-linked until 2010 commit 297c5eee3724 ("mm: make the vma >list be doubly linked") and I guess it was just simpler to add the vm_prev link. > >Conversion to list_head might be an interesting project for some "advanced >beginner" in the kernel :) Seems it will touch many code ... -- Wei Yang Help you, Help me