Merge branch 'io_uring-bio-cache.5' into for-next

* io_uring-bio-cache.5:
  bio: improve kerneldoc documentation for bio_alloc_kiocb()
  block: provide bio_clear_hipri() helper
  block: use the percpu bio cache in __blkdev_direct_IO
  io_uring: enable use of bio alloc cache
  block: clear BIO_PERCPU_CACHE flag if polling isn't supported
  bio: add allocation cache abstraction
  fs: add kiocb alloc cache flag
  bio: optimize initialization of a bio

diff --cc block/bio.c
Simple merge

diff --cc block/blk-core.c
Simple merge

diff --cc block/blk-merge.c
Simple merge

diff --cc block/blk.h
Simple merge

diff --cc fs/block_dev.c
Simple merge

diff --cc fs/io_uring.c
Simple merge

diff --cc include/linux/bio.h
Simple merge

diff --cc include/linux/blk_types.h
Simple merge

diff --cc include/linux/fs.h
Simple merge