From: Martin Wilck <mwilck@xxxxxxxx>
Hello Mike,
here is v3 of my attempt to add retry logic to SG_IO on dm-multipath devices.
Sorry that it took such a long time.
Regards
Martin
Changes v2->v3:
- un-inlined scsi_result_to_blk_status again, and move the helper
__scsi_result_to_blk_status to block/scsi_ioctl.c instead
(Bart v. Assche)
- open-coded the status/msg/host/driver-byte -> result conversion
where the standard SCSI helpers aren't usable (Bart v. Assche)
Changes v1->v2:
- applied modifications from Mike Snitzer
- moved SG_IO dependent code to a separate file, no scsi includes in
dm.c any more
- made the new code depend on a configuration option
- separated out scsi changes, made scsi_result_to_blk_status()
inline to avoid dependency of dm_mod from scsi_mod (Paolo Bonzini)
Martin Wilck (2):
scsi: export __scsi_result_to_blk_status() in scsi_ioctl.c
dm: add CONFIG_DM_MULTIPATH_SG_IO - failover for SG_IO on dm-multipath
block/scsi_ioctl.c | 52 ++++++++++++++-
drivers/md/Kconfig | 11 ++++
drivers/md/Makefile | 4 ++
drivers/md/dm-core.h | 5 ++
drivers/md/dm-rq.h | 11 ++++
drivers/md/dm-scsi_ioctl.c | 127 +++++++++++++++++++++++++++++++++++++
drivers/md/dm.c | 20 +++++-
drivers/scsi/scsi_lib.c | 29 +--------
include/linux/blkdev.h | 3 +
9 files changed, 229 insertions(+), 33 deletions(-)
create mode 100644 drivers/md/dm-scsi_ioctl.c
--
2.31.1
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