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From: Trond Myklebust <trondmy@gmail.com>
To: linux-nfs@vger.kernel.org
Subject: [PATCH 08/25] SUNRPC: Ensure that the transport layer respect major timeouts
Date: Thu, 28 Mar 2019 16:52:22 -0400	[thread overview]
Message-ID: <20190328205239.29674-9-trond.myklebust@hammerspace.com> (raw)
In-Reply-To: <20190328205239.29674-8-trond.myklebust@hammerspace.com>

Ensure that when in the transport layer, we don't sleep past
a major timeout.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
---
 net/sunrpc/xprt.c | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c
index 7c3623b17493..6b2b71a2ec43 100644
--- a/net/sunrpc/xprt.c
+++ b/net/sunrpc/xprt.c
@@ -73,6 +73,15 @@ static void	 xprt_destroy(struct rpc_xprt *xprt);
 static DEFINE_SPINLOCK(xprt_list_lock);
 static LIST_HEAD(xprt_list);
 
+static unsigned long xprt_request_timeout(const struct rpc_rqst *req)
+{
+	unsigned long timeout = jiffies + req->rq_timeout;
+
+	if (time_before(timeout, req->rq_majortimeo))
+		return timeout;
+	return req->rq_majortimeo;
+}
+
 /**
  * xprt_register_transport - register a transport implementation
  * @transport: transport to register
@@ -212,7 +221,7 @@ int xprt_reserve_xprt(struct rpc_xprt *xprt, struct rpc_task *task)
 	task->tk_status = -EAGAIN;
 	if  (RPC_IS_SOFT(task))
 		rpc_sleep_on_timeout(&xprt->sending, task, NULL,
-				jiffies + req->rq_timeout);
+				xprt_request_timeout(req));
 	else
 		rpc_sleep_on(&xprt->sending, task, NULL);
 	return 0;
@@ -279,7 +288,7 @@ int xprt_reserve_xprt_cong(struct rpc_xprt *xprt, struct rpc_task *task)
 	task->tk_status = -EAGAIN;
 	if (RPC_IS_SOFT(task))
 		rpc_sleep_on_timeout(&xprt->sending, task, NULL,
-				jiffies + req->rq_timeout);
+				xprt_request_timeout(req));
 	else
 		rpc_sleep_on(&xprt->sending, task, NULL);
 	return 0;
@@ -795,7 +804,7 @@ void xprt_connect(struct rpc_task *task)
 	if (!xprt_connected(xprt)) {
 		task->tk_rqstp->rq_connect_cookie = xprt->connect_cookie;
 		rpc_sleep_on_timeout(&xprt->pending, task, NULL,
-				jiffies + task->tk_rqstp->rq_timeout);
+				xprt_request_timeout(task->tk_rqstp));
 
 		if (test_bit(XPRT_CLOSING, &xprt->state))
 			return;
@@ -1087,7 +1096,7 @@ void xprt_wait_for_reply_request_def(struct rpc_task *task)
 	struct rpc_rqst *req = task->tk_rqstp;
 
 	rpc_sleep_on_timeout(&req->rq_xprt->pending, task, xprt_timer,
-			jiffies + req->rq_timeout);
+			xprt_request_timeout(req));
 }
 EXPORT_SYMBOL_GPL(xprt_wait_for_reply_request_def);
 
-- 
2.20.1


  reply	other threads:[~2019-03-28 20:56 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-28 20:52 [PATCH 00/25] Fix up soft mounts for NFSv4.x Trond Myklebust
2019-03-28 20:52 ` [PATCH 01/25] SUNRPC: Fix up task signalling Trond Myklebust
2019-03-28 20:52   ` [PATCH 02/25] SUNRPC: Refactor rpc_restart_call/rpc_restart_call_prepare Trond Myklebust
2019-03-28 20:52     ` [PATCH 03/25] SUNRPC: Refactor xprt_request_wait_receive() Trond Myklebust
2019-03-28 20:52       ` [PATCH 04/25] SUNRPC: Refactor rpc_sleep_on() Trond Myklebust
2019-03-28 20:52         ` [PATCH 05/25] SUNRPC: Remove unused argument 'action' from rpc_sleep_on_priority() Trond Myklebust
2019-03-28 20:52           ` [PATCH 06/25] SUNRPC: Add function rpc_sleep_on_timeout() Trond Myklebust
2019-03-28 20:52             ` [PATCH 07/25] SUNRPC: Fix up tracking of timeouts Trond Myklebust
2019-03-28 20:52               ` Trond Myklebust [this message]
2019-03-28 20:52                 ` [PATCH 09/25] SUNRPC: Add tracking of RPC level errors Trond Myklebust
2019-03-28 20:52                   ` [PATCH 10/25] SUNRPC: Make "no retrans timeout" soft tasks behave like softconn for timeouts Trond Myklebust
2019-03-28 20:52                     ` [PATCH 11/25] SUNRPC: Start the first major timeout calculation at task creation Trond Myklebust
2019-03-28 20:52                       ` [PATCH 12/25] SUNRPC: Add the 'softerr' rpc_client flag Trond Myklebust
2019-03-28 20:52                         ` [PATCH 13/25] NFS: Consider ETIMEDOUT to be a fatal error Trond Myklebust
2019-03-28 20:52                           ` [PATCH 14/25] NFS: Move internal constants out of uapi/linux/nfs_mount.h Trond Myklebust
2019-03-28 20:52                             ` [PATCH 15/25] NFS: Add a mount option "softerr" to allow clients to see ETIMEDOUT errors Trond Myklebust
2019-03-28 20:52                               ` [PATCH 16/25] NFS: Don't interrupt file writeout due to fatal errors Trond Myklebust
2019-03-28 20:52                                 ` [PATCH 17/25] NFS: Don't call generic_error_remove_page() while holding locks Trond Myklebust
2019-03-28 20:52                                   ` [PATCH 18/25] NFS: Don't inadvertently clear writeback errors Trond Myklebust
2019-03-28 20:52                                     ` [PATCH 19/25] NFS: Replace custom error reporting mechanism with generic one Trond Myklebust
2019-03-28 20:52                                       ` [PATCH 20/25] NFS: Fix up NFS I/O subrequest creation Trond Myklebust
2019-03-28 20:52                                         ` [PATCH 21/25] NFS: Remove unused argument from nfs_create_request() Trond Myklebust
2019-03-28 20:52                                           ` [PATCH 22/25] pNFS: Add tracking to limit the number of pNFS retries Trond Myklebust
2019-03-28 20:52                                             ` [PATCH 23/25] NFS: Allow signal interruption of NFS4ERR_DELAYed operations Trond Myklebust
2019-03-28 20:52                                               ` [PATCH 24/25] NFS: Add a helper to return a pointer to the open context of a struct nfs_page Trond Myklebust
2019-03-28 20:52                                                 ` [PATCH 25/25] NFS: Remove redundant open context from nfs_page Trond Myklebust
2019-04-01  6:37                                                   ` Dan Carpenter
2019-04-01  6:36                                       ` [PATCH 19/25] NFS: Replace custom error reporting mechanism with generic one Dan Carpenter

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