All of lore.kernel.org
 help / color / mirror / Atom feed
From: Trond Myklebust <trond.myklebust@primarydata.com>
To: linux-nfs@vger.kernel.org
Subject: [PATCH 06/11] SUNRPC: TCP/UDP always close the old socket before reconnecting
Date: Sun,  8 Feb 2015 22:07:37 -0500	[thread overview]
Message-ID: <1423451262-84493-7-git-send-email-trond.myklebust@primarydata.com> (raw)
In-Reply-To: <1423451262-84493-6-git-send-email-trond.myklebust@primarydata.com>

It is not safe to call xs_reset_transport() from inside xs_udp_setup_socket()
or xs_tcp_setup_socket(), since they do not own the correct locks. Instead,
do it in xs_connect().

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
---
 net/sunrpc/xprtsock.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index e57d8ed2c4d8..e53a5ca03daf 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -2081,8 +2081,6 @@ static void xs_udp_setup_socket(struct work_struct *work)
 	struct socket *sock = transport->sock;
 	int status = -EIO;
 
-	/* Start by resetting any existing state */
-	xs_reset_transport(transport);
 	sock = xs_create_sock(xprt, transport,
 			xs_addr(xprt)->sa_family, SOCK_DGRAM,
 			IPPROTO_UDP, false);
@@ -2328,6 +2326,9 @@ static void xs_connect(struct rpc_xprt *xprt, struct rpc_task *task)
 
 	WARN_ON_ONCE(!xprt_lock_connect(xprt, task, transport));
 
+	/* Start by resetting any existing state */
+	xs_reset_transport(transport);
+
 	if (transport->sock != NULL && !RPC_IS_SOFTCONN(task)) {
 		dprintk("RPC:       xs_connect delayed xprt %p for %lu "
 				"seconds\n",
-- 
2.1.0


  reply	other threads:[~2015-02-09  3:07 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-02-09  3:07 [PATCH 00/11] Fix TCP connection port number reuse in NFSv3 Trond Myklebust
2015-02-09  3:07 ` [PATCH 01/11] SUNRPC: Set SO_REUSEPORT socket option for TCP connections Trond Myklebust
2015-02-09  3:07   ` [PATCH 02/11] SUNRPC: Handle EADDRINUSE on connect Trond Myklebust
2015-02-09  3:07     ` [PATCH 03/11] SUNRPC: Do not clear the source port in xs_reset_transport Trond Myklebust
2015-02-09  3:07       ` [PATCH 04/11] SUNRPC: Ensure xs_reset_transport() resets the close connection flags Trond Myklebust
2015-02-09  3:07         ` [PATCH 05/11] SUNRPC: Add helpers to prevent socket create from racing Trond Myklebust
2015-02-09  3:07           ` Trond Myklebust [this message]
2015-02-09  3:07             ` [PATCH 07/11] SUNRPC: Remove TCP client connection reset hack Trond Myklebust
2015-02-09  3:07               ` [PATCH 08/11] SUNRPC: Kill the special TCP close mechanisms Trond Myklebust
2015-02-09  3:07                 ` [PATCH 09/11] SUNRPC: Remove TCP socket linger code Trond Myklebust
2015-02-09  3:07                   ` [PATCH 10/11] SUNRPC: Cleanup to remove remaining uses of XPRT_CONNECTION_ABORT Trond Myklebust
2015-02-09  3:07                     ` [PATCH 11/11] SUNRPC: Remove the redundant XPRT_CONNECTION_CLOSE flag Trond Myklebust
2015-02-09 15:31                   ` [PATCH 09/11] SUNRPC: Remove TCP socket linger code Anna Schumaker
2015-02-09 15:37                     ` Trond Myklebust
2015-02-09 15:39                       ` Anna Schumaker
2015-02-09 15:59                         ` Trond Myklebust

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1423451262-84493-7-git-send-email-trond.myklebust@primarydata.com \
    --to=trond.myklebust@primarydata.com \
    --cc=linux-nfs@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.