From: Trond Myklebust Date: Sat, 9 Jun 2007 19:39:12 -0400 SUNRPC: Kill rpc_clnt->cl_dead Its use is at best racy, and there is only one user (lockd), which has additional locking that makes the whole thing redundant. Signed-off-by: Trond Myklebust --- include/linux/sunrpc/clnt.h | 3 +-- net/sunrpc/clnt.c | 18 +++--------------- 2 files changed, 4 insertions(+), 17 deletions(-) diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h index 003d8ea..ab3ef6d 100644 --- a/include/linux/sunrpc/clnt.h +++ b/include/linux/sunrpc/clnt.h @@ -45,8 +45,7 @@ struct rpc_clnt { cl_intr : 1,/* interruptible */ cl_discrtry : 1,/* disconnect before retry */ cl_autobind : 1,/* use getport() */ - cl_oneshot : 1,/* dispose after use */ - cl_dead : 1;/* abandoned */ + cl_oneshot : 1;/* dispose after use */ struct rpc_rtt * cl_rtt; /* RTO estimator data */ diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index 254a6e1..fb65249 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -286,7 +286,6 @@ rpc_clone_client(struct rpc_clnt *clnt) /* Turn off autobind on clones */ new->cl_autobind = 0; new->cl_oneshot = 0; - new->cl_dead = 0; INIT_LIST_HEAD(&new->cl_tasks); spin_lock_init(&new->cl_lock); rpc_init_rtt(&new->cl_rtt_default, clnt->cl_xprt->timeout.to_initval); @@ -305,9 +304,8 @@ out_no_clnt: /* * Properly shut down an RPC client, terminating all outstanding - * requests. Note that we must be certain that cl_oneshot and - * cl_dead are cleared, or else the client would be destroyed - * when the last task releases it. + * requests. Note that we must be certain that cl_oneshot is cleared, + * or else the client would be destroyed when the last task releases it. */ int rpc_shutdown_client(struct rpc_clnt *clnt) @@ -318,7 +316,6 @@ rpc_shutdown_client(struct rpc_clnt *clnt) while (!list_empty(&clnt->cl_tasks)) { /* Don't let rpc_release_client destroy us */ clnt->cl_oneshot = 0; - clnt->cl_dead = 0; rpc_killall_tasks(clnt); wait_event_timeout(destroy_wait, list_empty(&clnt->cl_tasks), 1*HZ); @@ -369,7 +366,7 @@ rpc_release_client(struct rpc_clnt *clnt) if (list_empty(&clnt->cl_tasks)) wake_up(&destroy_wait); - if (clnt->cl_oneshot || clnt->cl_dead) + if (clnt->cl_oneshot) rpc_destroy_client(clnt); kref_put(&clnt->cl_kref, rpc_free_client); } @@ -483,10 +480,6 @@ int rpc_call_sync(struct rpc_clnt *clnt, struct rpc_message *msg, int flags) sigset_t oldset; int status; - /* If this client is slain all further I/O fails */ - if (clnt->cl_dead) - return -EIO; - BUG_ON(flags & RPC_TASK_ASYNC); task = rpc_new_task(clnt, flags, &rpc_default_ops, NULL); @@ -519,11 +512,6 @@ rpc_call_async(struct rpc_clnt *clnt, struct rpc_message *msg, int flags, sigset_t oldset; int status; - /* If this client is slain all further I/O fails */ - status = -EIO; - if (clnt->cl_dead) - goto out_release; - flags |= RPC_TASK_ASYNC; /* Create/initialize a new RPC task */