[v3,0/6] Improve the performance of F2FS on zoned UFS

Message

Bart Van Assche July 26, 2023, 12:57 a.m. UTC

Hi Jens,

This patch series improves write performance for zoned UFS devices. Please
consider these patches for the next merge window.

Thank you,

Bart.

Changes compared to v2:
 - Renamed the request queue flag for disabling zone write locking.
 - Introduced a new request flag for disabling zone write locking.
 - Modified the mq-deadline scheduler such that zone write locking is only
   disabled if both flags are set.
 - Added an F2FS patch that sets the request flag for disabling zone write
   locking.
 - Only disable zone write locking in the UFS driver if auto-hibernation is
   disabled.

Changes compared to v1:
 - Left out the patches that are already upstream.
 - Switched the approach in patch "scsi: Retry unaligned zoned writes" from
   retrying immediately to sending unaligned write commands to the SCSI error
   handler.

Bart Van Assche (5):
  block: Introduce a request queue flag for pipelining zoned writes
  block/mq-deadline: Only use zone locking if necessary
  block/null_blk: Add support for pipelining zoned writes
  scsi: Retry unaligned zoned writes
  scsi: ufs: Enable zoned write pipelining

Bart Van Assche (6):
  block: Introduce the flag REQ_NO_WRITE_LOCK
  block/mq-deadline: Only use zone locking if necessary
  block/null_blk: Support disabling zone write locking
  scsi: Retry unaligned zoned writes
  scsi: ufs: Disable zone write locking
  fs/f2fs: Disable zone write locking

 block/blk-flush.c                 |  3 ++-
 block/mq-deadline.c               | 28 ++++++++++++++-----
 drivers/block/null_blk/main.c     |  2 ++
 drivers/block/null_blk/null_blk.h |  1 +
 drivers/block/null_blk/zoned.c    |  3 +++
 drivers/scsi/scsi_error.c         | 37 +++++++++++++++++++++++++
 drivers/scsi/scsi_lib.c           |  1 +
 drivers/scsi/sd.c                 |  3 +++
 drivers/ufs/core/ufshcd.c         | 45 ++++++++++++++++++++++++++++---
 fs/f2fs/data.c                    |  1 +
 include/linux/blk_types.h         |  8 ++++++
 include/scsi/scsi.h               |  1 +
 12 files changed, 123 insertions(+), 10 deletions(-)