Re: [PATCHv4 18/43] block: define BIO_MAX_PAGES to HPAGE_PMD_NR if huge page cache enabled

[Christoph Hellwig]

On Wed, Oct 26, 2016 at 03:30:05PM +0800, Ming Lei wrote:
> I am preparing for the multipage bvec support[1], and once it is ready the
> default 256 bvecs should be enough for normal cases.

Yes, multipage bvecs are defintively the way to got to efficiently
support I/O on huge pages.