[v2,0/2] Fix handling of host-aware ZBC disks

Message

Damien Le Moal Sept. 14, 2020, 12:34 a.m. UTC

Martin,

Two patches for this cycle (with a cc stable) to fix handling of
host-aware ZBC disks that have partitions, that is, used as regular
disks.

The first patch fixes host-aware disk initialization and command
completion processing. It also enables the use of host-aware disks as
regular disks when CONFIG_BLK_DEV_ZONED is disabled.

The second patch fixes the CONFIG_BLK_DEV_ZONED enabled configuration
so that zone append emulation is not initialized for host-aware disks
with partitions/used as regular disks. While at it, this patch also
removes a problem with sd_zbc_init_disk() error handling in
sd_revalidate_disk() by moving this function execution inside
sd_zbc_revalidate_zones().

Borislav tested the series and confirmed that it solves his problem
(thanks Borislav !)

Changes from v1:
* Rebased on rc5
* Use "if (IS_DEFINED())" instead of #ifdef in patch 1

Damien Le Moal (2):
  scsi: Fix handling of host-aware ZBC disks
  scsi: Fix ZBC disk initialization

 drivers/scsi/sd.c     | 32 ++++++++++++++-------
 drivers/scsi/sd.h     |  8 +-----
 drivers/scsi/sd_zbc.c | 66 ++++++++++++++++++++++++++-----------------
 3 files changed, 63 insertions(+), 43 deletions(-)