On 23.12.2014 02:22, Christoph Hellwig wrote: > On Mon, Dec 22, 2014 at 12:48:29PM +0100, Dongsu Park wrote: > > From: Kent Overstreet <k...@daterainc.com> > > > > Since generic_make_request() can now handle arbitrary size bios, all we > > have to do is make sure the bvec array doesn't overflow. > > __bio_add_page() doesn't need to call ->merge_bvec_fn(), where > > we can get rid of unnecessary code paths. > > This needs an explanation of why removign the call to ->merge_bvec_fn > is fine for bio_add_pc_page. I guess it's because neither > the target pscsi pass through mode, nor the osd code ever use anything > but a simple scsi devices that doesn't even have one, but it needs to be > clearly spelled out.
Agreed. > > + * Attempt to add a page to the bio_vec maplist. This will only fail if > > + * bio->bi_vcnt == bio->bi_max_vecs. > > It also fails on a cloned bio, although that might better be turned into > a BUG_ON(). Agreed, I'll update both of them in the next round. Thanks, Dongsu -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
