From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
Hi all,
Here is v2 series with HCH's recent changes to go ahead and drop
all se_port + t10_alua_tg_pt_gp_member usage within target-core in
favor of direct se_lun pointer dereference.
This includes the original patch + minor fixes, along with two other
improvements for killing off se_lun->lun_sep_lock via RCU pointer
access, and converting the remaining se_lun->lun_active busy-wait
special cases to existing percpu se_lun->lun_ref access.
Also included in the series is a recently discussed change to go
ahead and drop an unnecessary core_tpg_register() parameter, and
all associated target_core_fabric_ops forward declartions within
fabric driver code.
The changes since -v1 include:
- Move ->lun_se_dev assignments under se_device->se_port_lock
- All proper call_rcu() in backend drivers to allow for read-side
critical se_device RCU to complete
- Add se_device->hba_index to clean up RCU dereferences within
scsi_port_show_attr_inst() + scsi_tgt_port_show_attr_inst()
- Add various rcu_dereference and lockless_dereference RCU notation
Please review.
--nab
Christoph Hellwig (1):
target: Subsume se_port + t10_alua_tg_pt_gp_member into se_lun
Nicholas Bellinger (3):
target: Drop lun_sep_lock for se_lun->lun_se_dev RCU usage
target: Drop se_lun->lun_active for existing percpu lun_ref
target: Drop unnecessary core_tpg_register TFO parameter
drivers/infiniband/ulp/srpt/ib_srpt.c | 4 +-
drivers/scsi/qla2xxx/tcm_qla2xxx.c | 9 +-
drivers/target/iscsi/iscsi_target_configfs.c | 3 +-
drivers/target/iscsi/iscsi_target_tpg.c | 8 +-
drivers/target/loopback/tcm_loop.c | 5 +-
drivers/target/sbp/sbp_target.c | 2 +-
drivers/target/target_core_alua.c | 393 ++++++++++-----------------
drivers/target/target_core_alua.h | 14 +-
drivers/target/target_core_configfs.c | 11 +-
drivers/target/target_core_device.c | 205 +++-----------
drivers/target/target_core_fabric_configfs.c | 32 +--
drivers/target/target_core_file.c | 11 +-
drivers/target/target_core_iblock.c | 10 +-
drivers/target/target_core_internal.h | 12 +-
drivers/target/target_core_pr.c | 50 ++--
drivers/target/target_core_pscsi.c | 11 +-
drivers/target/target_core_rd.c | 10 +-
drivers/target/target_core_spc.c | 48 ++--
drivers/target/target_core_stat.c | 374 ++++++++++---------------
drivers/target/target_core_tpg.c | 112 +++++---
drivers/target/target_core_transport.c | 46 +---
drivers/target/target_core_user.c | 11 +-
drivers/target/target_core_xcopy.c | 17 +-
drivers/target/tcm_fc/tfc_conf.c | 5 +-
drivers/usb/gadget/legacy/tcm_usb_gadget.c | 5 +-
drivers/vhost/scsi.c | 4 +-
drivers/xen/xen-scsiback.c | 5 +-
include/target/target_core_base.h | 77 +++---
include/target/target_core_fabric.h | 3 +-
29 files changed, 585 insertions(+), 912 deletions(-)
--
1.9.1
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