From 88dcd2dab5c23b1c9cfc396246d8f476c872f0ca Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Thu, 26 Feb 2015 22:19:15 -0800 Subject: iscsi-target: Convert iscsi_thread_set usage to kthread.h This patch converts iscsi-target code to use modern kthread.h API callers for creating RX/TX threads for each new iscsi_conn descriptor, and releasing associated RX/TX threads during connection shutdown. This is done using iscsit_start_kthreads() -> kthread_run() to start new kthreads from within iscsi_post_login_handler(), and invoking kthread_stop() from existing iscsit_close_connection() code. Also, convert iscsit_logout_post_handler_closesession() code to use cmpxchg when determing when iscsit_cause_connection_reinstatement() needs to sleep waiting for completion. Reported-by: Sagi Grimberg Tested-by: Sagi Grimberg Cc: Slava Shwartsman Cc: # v3.10+ Signed-off-by: Nicholas Bellinger --- include/target/iscsi/iscsi_target_core.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/target/iscsi') diff --git a/include/target/iscsi/iscsi_target_core.h b/include/target/iscsi/iscsi_target_core.h index d3583d3ee193..dd0f3abde75d 100644 --- a/include/target/iscsi/iscsi_target_core.h +++ b/include/target/iscsi/iscsi_target_core.h @@ -602,6 +602,11 @@ struct iscsi_conn { struct iscsi_session *sess; /* Pointer to thread_set in use for this conn's threads */ struct iscsi_thread_set *thread_set; + int bitmap_id; + int rx_thread_active; + struct task_struct *rx_thread; + int tx_thread_active; + struct task_struct *tx_thread; /* list_head for session connection list */ struct list_head conn_list; } ____cacheline_aligned; @@ -871,10 +876,12 @@ struct iscsit_global { /* Unique identifier used for the authentication daemon */ u32 auth_id; u32 inactive_ts; +#define ISCSIT_BITMAP_BITS 262144 /* Thread Set bitmap count */ int ts_bitmap_count; /* Thread Set bitmap pointer */ unsigned long *ts_bitmap; + spinlock_t ts_bitmap_lock; /* Used for iSCSI discovery session authentication */ struct iscsi_node_acl discovery_acl; struct iscsi_portal_group *discovery_tpg; -- cgit v1.2.3-59-g8ed1b