Hi, Interests[1] have been shown in multipage bvecs, so this patchset try to prepare for the support and do two things: 1) the 1st 4 patches use bvec iterator to implement iterate_bvec(), then we can drop the non-standard way for iterating bvec, which can be thought as a good cleanup for lib/iov_iter.c 2) remove BIO_MAX_SECTORS & BIO_MAX_SIZE, and now there is only one user for each. Once multipage bvecs is introduced, one bio may hold lots of sectors, and we should always use sort of BIO_MAX_VECS which should be introduced in future and is similiar with current BIO_MAX_PAGES. xfstests(-a auto) have been run and no regression found by this patchset against linus v4.6-rc1-next-20160329. V3: - include kenrel.h & bug.h in bvec.h for fix comiling failure on arm as reported by 0day ktest - build test on arm & arm64 V2: - rename bvec_iter.h as bvec.h - always include bvec.h into blk_types.h as suggested by Christoph V1: - don't move BIO_MAX_* to bvec_iter.h as pointed out by Christoph - run xfstests against v4.6-rc1-next-20160329 - add Reviewed-by - for 1,4 and 5, Reviewd-by not added, Christoph still expressed 'this looks fine to me.' drivers/block/drbd/drbd_int.h | 4 +- fs/xfs/xfs_buf.c | 4 +- include/linux/bio.h | 52 ----------------------- include/linux/blk_types.h | 22 +--------- include/linux/bvec.h | 96 +++++++++++++++++++++++++++++++++++++++++++ lib/iov_iter.c | 30 +++++--------- 6 files changed, 110 insertions(+), 98 deletions(-) Thanks, Ming -- 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
