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Subject: [PATCH 2/4] SUNRPC: Widen rpc_task::tk_flags
From:   Chuck Lever <chuck.lever@oracle.com>
To:     anna.schumaker@netapp.com, trondmy@hammerspace.com
Cc:     linux-nfs@vger.kernel.org
Date:   Fri, 22 Jul 2022 13:25:35 -0400
Message-ID: <165851073589.361126.4062184829827389945.stgit@morisot.1015granger.net>
In-Reply-To: <165851065336.361126.17865870911497306083.stgit@morisot.1015granger.net>
References: <165851065336.361126.17865870911497306083.stgit@morisot.1015granger.net>
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There is just one unused bit left in rpc_task::tk_flags, and I will
need two in subsequent patches. Double the width of the field to
accommodate more flag bits.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
---
 include/linux/sunrpc/clnt.h  |    6 ++++--
 include/linux/sunrpc/sched.h |   32 ++++++++++++++++----------------
 net/sunrpc/clnt.c            |   11 ++++++-----
 net/sunrpc/debugfs.c         |    2 +-
 4 files changed, 27 insertions(+), 24 deletions(-)

diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
index 90501404fa49..cbdd20dc84b7 100644
--- a/include/linux/sunrpc/clnt.h
+++ b/include/linux/sunrpc/clnt.h
@@ -193,11 +193,13 @@ void rpc_prepare_reply_pages(struct rpc_rqst *req, struct page **pages,
 			     unsigned int hdrsize);
 void		rpc_call_start(struct rpc_task *);
 int		rpc_call_async(struct rpc_clnt *clnt,
-			       const struct rpc_message *msg, int flags,
+			       const struct rpc_message *msg,
+			       unsigned int flags,
 			       const struct rpc_call_ops *tk_ops,
 			       void *calldata);
 int		rpc_call_sync(struct rpc_clnt *clnt,
-			      const struct rpc_message *msg, int flags);
+			      const struct rpc_message *msg,
+			      unsigned int flags);
 struct rpc_task *rpc_call_null(struct rpc_clnt *clnt, struct rpc_cred *cred,
 			       int flags);
 int		rpc_restart_call_prepare(struct rpc_task *);
diff --git a/include/linux/sunrpc/sched.h b/include/linux/sunrpc/sched.h
index 1d7a3e51b795..d4b7ebd0a99c 100644
--- a/include/linux/sunrpc/sched.h
+++ b/include/linux/sunrpc/sched.h
@@ -82,7 +82,7 @@ struct rpc_task {
 	ktime_t			tk_start;	/* RPC task init timestamp */
 
 	pid_t			tk_owner;	/* Process id for batching tasks */
-	unsigned short		tk_flags;	/* misc flags */
+	unsigned int		tk_flags;	/* misc flags */
 	unsigned short		tk_timeouts;	/* maj timeouts */
 
 #if IS_ENABLED(CONFIG_SUNRPC_DEBUG) || IS_ENABLED(CONFIG_TRACEPOINTS)
@@ -112,27 +112,27 @@ struct rpc_task_setup {
 	const struct rpc_call_ops *callback_ops;
 	void *callback_data;
 	struct workqueue_struct *workqueue;
-	unsigned short flags;
+	unsigned int flags;
 	signed char priority;
 };
 
 /*
  * RPC task flags
  */
-#define RPC_TASK_ASYNC		0x0001		/* is an async task */
-#define RPC_TASK_SWAPPER	0x0002		/* is swapping in/out */
-#define RPC_TASK_MOVEABLE	0x0004		/* nfs4.1+ rpc tasks */
-#define RPC_TASK_NULLCREDS	0x0010		/* Use AUTH_NULL credential */
-#define RPC_CALL_MAJORSEEN	0x0020		/* major timeout seen */
-#define RPC_TASK_DYNAMIC	0x0080		/* task was kmalloc'ed */
-#define	RPC_TASK_NO_ROUND_ROBIN	0x0100		/* send requests on "main" xprt */
-#define RPC_TASK_SOFT		0x0200		/* Use soft timeouts */
-#define RPC_TASK_SOFTCONN	0x0400		/* Fail if can't connect */
-#define RPC_TASK_SENT		0x0800		/* message was sent */
-#define RPC_TASK_TIMEOUT	0x1000		/* fail with ETIMEDOUT on timeout */
-#define RPC_TASK_NOCONNECT	0x2000		/* return ENOTCONN if not connected */
-#define RPC_TASK_NO_RETRANS_TIMEOUT	0x4000		/* wait forever for a reply */
-#define RPC_TASK_CRED_NOREF	0x8000		/* No refcount on the credential */
+#define RPC_TASK_ASYNC			0x00000001	/* is an async task */
+#define RPC_TASK_SWAPPER		0x00000002	/* is swapping in/out */
+#define RPC_TASK_MOVEABLE		0x00000004	/* nfs4.1+ rpc tasks */
+#define RPC_TASK_NULLCREDS		0x00000010	/* Use AUTH_NULL credential */
+#define RPC_CALL_MAJORSEEN		0x00000020	/* major timeout seen */
+#define RPC_TASK_DYNAMIC		0x00000080	/* task was kmalloc'ed */
+#define	RPC_TASK_NO_ROUND_ROBIN		0x00000100	/* send requests on "main" xprt */
+#define RPC_TASK_SOFT			0x00000200	/* Use soft timeouts */
+#define RPC_TASK_SOFTCONN		0x00000400	/* Fail if can't connect */
+#define RPC_TASK_SENT			0x00000800	/* message was sent */
+#define RPC_TASK_TIMEOUT		0x00001000	/* fail with ETIMEDOUT on timeout */
+#define RPC_TASK_NOCONNECT		0x00002000	/* return ENOTCONN if not connected */
+#define RPC_TASK_NO_RETRANS_TIMEOUT	0x00004000	/* wait forever for a reply */
+#define RPC_TASK_CRED_NOREF		0x00008000	/* No refcount on the credential */
 
 #define RPC_IS_ASYNC(t)		((t)->tk_flags & RPC_TASK_ASYNC)
 #define RPC_IS_SWAPPER(t)	((t)->tk_flags & RPC_TASK_SWAPPER)
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index a97d4e06cae3..476caa4ebf5c 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -1162,7 +1162,8 @@ EXPORT_SYMBOL_GPL(rpc_run_task);
  * @msg: RPC call parameters
  * @flags: RPC call flags
  */
-int rpc_call_sync(struct rpc_clnt *clnt, const struct rpc_message *msg, int flags)
+int rpc_call_sync(struct rpc_clnt *clnt, const struct rpc_message *msg,
+		  unsigned int flags)
 {
 	struct rpc_task	*task;
 	struct rpc_task_setup task_setup_data = {
@@ -1197,9 +1198,9 @@ EXPORT_SYMBOL_GPL(rpc_call_sync);
  * @tk_ops: RPC call ops
  * @data: user call data
  */
-int
-rpc_call_async(struct rpc_clnt *clnt, const struct rpc_message *msg, int flags,
-	       const struct rpc_call_ops *tk_ops, void *data)
+int rpc_call_async(struct rpc_clnt *clnt, const struct rpc_message *msg,
+		   unsigned int flags, const struct rpc_call_ops *tk_ops,
+		   void *data)
 {
 	struct rpc_task	*task;
 	struct rpc_task_setup task_setup_data = {
@@ -3080,7 +3081,7 @@ static void rpc_show_task(const struct rpc_clnt *clnt,
 	if (RPC_IS_QUEUED(task))
 		rpc_waitq = rpc_qname(task->tk_waitqueue);
 
-	printk(KERN_INFO "%5u %04x %6d %8p %8p %8ld %8p %sv%u %s a:%ps q:%s\n",
+	printk(KERN_INFO "%5u %08x %6d %8p %8p %8ld %8p %sv%u %s a:%ps q:%s\n",
 		task->tk_pid, task->tk_flags, task->tk_status,
 		clnt, task->tk_rqstp, rpc_task_timeout(task), task->tk_ops,
 		clnt->cl_program->name, clnt->cl_vers, rpc_proc_name(task),
diff --git a/net/sunrpc/debugfs.c b/net/sunrpc/debugfs.c
index 8df634e63f30..60f20be4e7e5 100644
--- a/net/sunrpc/debugfs.c
+++ b/net/sunrpc/debugfs.c
@@ -30,7 +30,7 @@ tasks_show(struct seq_file *f, void *v)
 	if (task->tk_rqstp)
 		xid = be32_to_cpu(task->tk_rqstp->rq_xid);
 
-	seq_printf(f, "%5u %04x %6d 0x%x 0x%x %8ld %ps %sv%u %s a:%ps q:%s\n",
+	seq_printf(f, "%5u %08x %6d 0x%x 0x%x %8ld %ps %sv%u %s a:%ps q:%s\n",
 		task->tk_pid, task->tk_flags, task->tk_status,
 		clnt->cl_clid, xid, rpc_task_timeout(task), task->tk_ops,
 		clnt->cl_program->name, clnt->cl_vers, rpc_proc_name(task),