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| author | Mike Christie <michael.christie@oracle.com> | 2023-03-19 04:56:12 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-05-11 17:03:19 +0300 |
| commit | 76b77646f17118f5babe93c032e6b7a53bbde3b9 (patch) | |
| tree | 869364f38a451757e885592ec66cbfdf8c76881b /include/target/target_core_base.h | |
| parent | 87ee7227cce318c62ae022609b3a982c6e4f7dcf (diff) | |
| download | linux-76b77646f17118f5babe93c032e6b7a53bbde3b9.tar.xz | |
scsi: target: Move sess cmd counter to new struct
[ Upstream commit becd9be6069e7b183c084f460f0eb363e43cc487 ]
iSCSI needs to wait on outstanding commands like how SRP and the FC/FCoE
drivers do. It can't use target_stop_session() because for MCS support we
can't stop the entire session during recovery because if other connections
are OK then we want to be able to continue to execute I/O on them.
Move the per session cmd counters to a new struct so iSCSI can allocate
them per connection. The xcopy code can also just not allocate in the
future since it doesn't need to track commands.
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Link: https://lore.kernel.org/r/20230319015620.96006-2-michael.christie@oracle.com
Reviewed-by: Maurizio Lombardi <mlombard@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Stable-dep-of: 395cee83d02d ("scsi: target: iscsit: Stop/wait on cmds during conn close")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/target/target_core_base.h')
| -rw-r--r-- | include/target/target_core_base.h | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h index 8c920456edd9..076bf352e17d 100644 --- a/include/target/target_core_base.h +++ b/include/target/target_core_base.h @@ -492,6 +492,7 @@ struct se_cmd { struct se_lun *se_lun; /* Only used for internal passthrough and legacy TCM fabric modules */ struct se_session *se_sess; + struct target_cmd_counter *cmd_cnt; struct se_tmr_req *se_tmr_req; struct llist_node se_cmd_list; struct completion *free_compl; @@ -617,22 +618,26 @@ static inline struct se_node_acl *fabric_stat_to_nacl(struct config_item *item) acl_fabric_stat_group); } -struct se_session { +struct target_cmd_counter { + struct percpu_ref refcnt; + wait_queue_head_t refcnt_wq; + struct completion stop_done; atomic_t stopped; +}; + +struct se_session { u64 sess_bin_isid; enum target_prot_op sup_prot_ops; enum target_prot_type sess_prot_type; struct se_node_acl *se_node_acl; struct se_portal_group *se_tpg; void *fabric_sess_ptr; - struct percpu_ref cmd_count; struct list_head sess_list; struct list_head sess_acl_list; spinlock_t sess_cmd_lock; - wait_queue_head_t cmd_count_wq; - struct completion stop_done; void *sess_cmd_map; struct sbitmap_queue sess_tag_pool; + struct target_cmd_counter *cmd_cnt; }; struct se_device; |