On Fri, 18 Dec 2009 13:44:40 +1100 Dave Chinner <david@xxxxxxxxxxxxx> wrote: > > > So it sounds like we only need a blk_rq_map_vmalloc() using the same > > > techniques as the patch set and we're good to go. > > > > I'm not sure about it. > > > > As I said before (when I was against this 'adding vmalloc support to > > the block layer' stuff), are there potential users of this except for > > XFS? Are there anyone who does such a thing now? > > As Christoph already mentioned, XFS is not passing the vmalloc'd > range to the block layer Oops, I should have said a vmalloc/vmap area. > > This API might be useful for only journaling file systems using log > > formats that need large contiguous buffer. Sound like only XFS? > > FWIW, mapped buffers larger than PAGE_SIZE are used for more than just log > recovery in XFS. e.g. filesystems with directory block size larger > than page size uses mapped buffers. I see, thanks. -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
