This series ties scsi_dh deeper into the scsi core, and fixes all kinds
of issues in it, most importantly the race between using and detaching
device handlers.
Changes since V1:
- updated comments / strings based on review feedback
- moved scsi_dh.c to drivers/scsi to fix the srcdir = objdir build
- changed the old patch 2 to have saner handling of mismatching device
handlers in dm.
- dropped patch 1: not having a hw handler is fine if we don't plan to
change it anyway
- dropped patch 3: not necessary anymore.
Changes since V2:
- Fixup issues during attaching device_handler from dm-multipath
- Add patch to clarify scsi_dh_activate() error codes
Changes since V3:
- Fixup minor bugs discovered during testing
- Fixup patch description
Christoph Hellwig (8):
dm-mpath, scsi_dh: don't let dm detach device handlers
dm-mpath, scsi_dh: request scsi_dh modules in scsi_dh, not dm-mpath
scsi_dh: move to drivers/scsi
scsi_dh: integrate into the core SCSI code
scsi_dh: move device matching to the core code
scsi_dh: kill struct scsi_dh_data
scsi_dh: add a common helper to get a scsi_device from a request_queue
scsi_dh: don't allow to detach device handlers at runtime
Hannes Reinecke (2):
scsi_dh: return SCSI_DH_NOTCONN in scsi_dh_activate()
scsi_dh: move 'dh_state' sysfs attribute to generic code
drivers/md/dm-mpath.c | 27 +-
drivers/scsi/Makefile | 1 +
drivers/scsi/device_handler/Kconfig | 2 +-
drivers/scsi/device_handler/Makefile | 1 -
drivers/scsi/device_handler/scsi_dh.c | 621 ----------------------------
drivers/scsi/device_handler/scsi_dh_alua.c | 31 +-
drivers/scsi/device_handler/scsi_dh_emc.c | 58 +--
drivers/scsi/device_handler/scsi_dh_hp_sw.c | 55 +--
drivers/scsi/device_handler/scsi_dh_rdac.c | 80 +---
drivers/scsi/scsi_dh.c | 371 +++++++++++++++++
drivers/scsi/scsi_error.c | 6 +-
drivers/scsi/scsi_lib.c | 6 +-
drivers/scsi/scsi_priv.h | 9 +
drivers/scsi/scsi_sysfs.c | 68 +++
include/scsi/scsi_device.h | 27 +-
include/scsi/scsi_dh.h | 29 +-
16 files changed, 527 insertions(+), 865 deletions(-)
delete mode 100644 drivers/scsi/device_handler/scsi_dh.c
create mode 100644 drivers/scsi/scsi_dh.c
--
1.8.5.6
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