[PATCHv4,00/10] block integrity merging and counting

Message

Keith Busch Sept. 11, 2024, 8:12 p.m. UTC

From: Keith Busch <[e-mail]>

Some fixes and cleanups to counting integrity segments when metadata is
used. This addresses merging issues when integrity data is present.

Changes from v3:

  Unconditionally define nr_integrity_segments. (Christoph)

  Dropped the "simplify" patches and the queue limits checks; they are
  not correct under some conditions. (Christoph)

  Fix a commit message typo. (Anuj)

  Reordered the driver patches to appear after the integrity segment
  count is accurate.

  Added a patch (5/9) that accounts for user mapped integrity segments.

  Added reviews.

Keith Busch (10):
  blk-mq: unconditional nr_integrity_segments
  blk-mq: set the nr_integrity_segments from bio
  blk-integrity: properly account for segments
  blk-integrity: consider entire bio list for merging
  block: provide a request helper for user integrity segments
  block: provide helper for nr_integrity_segments
  scsi: use request helper to get integrity segments
  nvme-rdma: use request helper to get integrity segments
  block: unexport blk_rq_count_integrity_sg
  blk-integrity: improved sg segment mapping

 block/bio-integrity.c         |  1 -
 block/blk-integrity.c         | 36 ++++++++++++++++++++++++-----------
 block/blk-merge.c             |  4 ++++
 block/blk-mq.c                |  5 +++--
 drivers/nvme/host/ioctl.c     |  6 ++----
 drivers/nvme/host/rdma.c      |  6 +++---
 drivers/scsi/scsi_lib.c       | 12 +++---------
 include/linux/blk-integrity.h | 13 +++++++++----
 include/linux/blk-mq.h        |  8 +++++---
 9 files changed, 54 insertions(+), 37 deletions(-)