On Sat, Oct 29, 2016 at 04:08:25PM +0800, Ming Lei wrote: > There are lots of direct access to .bi_vcnt & .bi_io_vec > of bio, and it isn't ready to support multipage bvecs > for BTRFS, so set NO_MP for these request queues. For one bio is an I/O submitter, it has absolutely no business changing queue flags - if we need to stick to this limitation it simply needs a version of bio_add_page that doesn't create multi-page bvecs. Second I don't think making it multipage bvec aware is all that hard, and we should aim for doing the proper thing. -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
