diff options
| author | Mike Christie <michael.christie@oracle.com> | 2020-11-01 12:59:32 -0600 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-11-04 22:39:37 -0500 |
| commit | 6f55b06f9b0722607cbac2140875d790395435f2 (patch) | |
| tree | 2cfda8dc67da1478eae6678750cf7a65b3895581 /include/target | |
| parent | 605e74025f953b995a3a241ead43bde71c1c99b5 (diff) | |
| download | linux-6f55b06f9b0722607cbac2140875d790395435f2.tar.bz2 | |
scsi: target: Drop sess_cmd_lock from I/O path
Drop the sess_cmd_lock by:
- Removing the sess_cmd_list use from LIO core, because it's been
moved to qla2xxx.
- Removing sess_tearing_down check in the I/O path. Instead of using that
bit and the sess_cmd_lock, we rely on the cmd_count percpu ref. To do
this we switch to percpu_ref_kill_and_confirm/percpu_ref_tryget_live.
Link: https://lore.kernel.org/r/1604257174-4524-7-git-send-email-michael.christie@oracle.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'include/target')
| -rw-r--r-- | include/target/target_core_base.h | 6 | ||||
| -rw-r--r-- | include/target/target_core_fabric.h | 2 |
2 files changed, 4 insertions, 4 deletions
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h index 7d632593c398..c858dc060381 100644 --- a/include/target/target_core_base.h +++ b/include/target/target_core_base.h @@ -608,7 +608,7 @@ static inline struct se_node_acl *fabric_stat_to_nacl(struct config_item *item) } struct se_session { - unsigned sess_tearing_down:1; + atomic_t stopped; u64 sess_bin_isid; enum target_prot_op sup_prot_ops; enum target_prot_type sess_prot_type; @@ -618,9 +618,9 @@ struct se_session { struct percpu_ref cmd_count; struct list_head sess_list; struct list_head sess_acl_list; - struct list_head sess_cmd_list; spinlock_t sess_cmd_lock; - wait_queue_head_t cmd_list_wq; + wait_queue_head_t cmd_count_wq; + struct completion stop_done; void *sess_cmd_map; struct sbitmap_queue sess_tag_pool; }; diff --git a/include/target/target_core_fabric.h b/include/target/target_core_fabric.h index 6adf4d71acf6..d60a3eb7517a 100644 --- a/include/target/target_core_fabric.h +++ b/include/target/target_core_fabric.h @@ -178,7 +178,7 @@ int transport_send_check_condition_and_sense(struct se_cmd *, int target_send_busy(struct se_cmd *cmd); int target_get_sess_cmd(struct se_cmd *, bool); int target_put_sess_cmd(struct se_cmd *); -void target_sess_cmd_list_set_waiting(struct se_session *); +void target_stop_session(struct se_session *se_sess); void target_wait_for_sess_cmds(struct se_session *); void target_show_cmd(const char *pfx, struct se_cmd *cmd); |