On Mon, Nov 26, 2018 at 10:17:17AM +0800, Ming Lei wrote: > Now multi-page bvec can cover CONFIG_THP_SWAP, so we don't need to > increase BIO_MAX_PAGES for it. > > CONFIG_THP_SWAP needs to split one THP into normal pages and adds > them all to one bio. With multipage-bvec, it just takes one bvec to > hold them all. > > Reviewed-by: Christoph Hellwig <hch@xxxxxx> Reviewed-by: Omar Sandoval <osandov@xxxxxx> > Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx> > --- > include/linux/bio.h | 8 -------- > 1 file changed, 8 deletions(-) > > diff --git a/include/linux/bio.h b/include/linux/bio.h > index 5505f74aef8b..7be48c55b14a 100644 > --- a/include/linux/bio.h > +++ b/include/linux/bio.h > @@ -34,15 +34,7 @@ > #define BIO_BUG_ON > #endif > > -#ifdef CONFIG_THP_SWAP > -#if HPAGE_PMD_NR > 256 > -#define BIO_MAX_PAGES HPAGE_PMD_NR > -#else > #define BIO_MAX_PAGES 256 > -#endif > -#else > -#define BIO_MAX_PAGES 256 > -#endif > > #define bio_prio(bio) (bio)->bi_ioprio > #define bio_set_prio(bio, prio) ((bio)->bi_ioprio = prio) > -- > 2.9.5 >
