[0/5] Optimize bio splitting

Message

Bart Van Assche July 22, 2019, 5:12 p.m. UTC

Hi Jens,

This patch series improves bio splitting in several ways:
- Reduce the number of CPU cycles spent in bio splitting code.
- Make the bio splittig code easier to read.
- Optimize alignment of split bios.

Please consider this patch series for kernel v5.4.

Thanks,

Bart.

Bart Van Assche (5):
  block: Declare several function pointer arguments 'const'
  block: Document the bio splitting functions
  block: Micro-optimize bvec_split_segs()
  block: Simplify blk_bio_segment_split()
  block: Improve physical block alignment of split bios

 block/bio.c            |   4 +-
 block/blk-merge.c      | 151 ++++++++++++++++++++++++++++-------------
 include/linux/blkdev.h |  32 ++++-----
 3 files changed, 120 insertions(+), 67 deletions(-)