From 6f55b06f9b0722607cbac2140875d790395435f2 Mon Sep 17 00:00:00 2001 From: Mike Christie Date: Sun, 1 Nov 2020 12:59:32 -0600 Subject: 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 Signed-off-by: Mike Christie Signed-off-by: Martin K. Petersen --- drivers/target/target_core_tpg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/target/target_core_tpg.c') diff --git a/drivers/target/target_core_tpg.c b/drivers/target/target_core_tpg.c index 62aa5fa63ac0..736847c933e5 100644 --- a/drivers/target/target_core_tpg.c +++ b/drivers/target/target_core_tpg.c @@ -328,7 +328,7 @@ static void target_shutdown_sessions(struct se_node_acl *acl) restart: spin_lock_irqsave(&acl->nacl_sess_lock, flags); list_for_each_entry(sess, &acl->acl_sess_list, sess_acl_list) { - if (sess->sess_tearing_down) + if (atomic_read(&sess->stopped)) continue; list_del_init(&sess->sess_acl_list); -- cgit v1.2.1