linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Stanislav Kinsbursky <skinsbursky@parallels.com>
To: Trond.Myklebust@netapp.com
Cc: bfields@fieldses.org, linux-nfs@vger.kernel.org,
	linux-kernel@vger.kernel.org, devel@openvz.org
Subject: [PATCH v4 04/10] NFS: callback up - transport backchannel cleanup
Date: Mon, 20 Aug 2012 18:00:21 +0400	[thread overview]
Message-ID: <20120820140021.17404.53651.stgit@localhost.localdomain> (raw)
In-Reply-To: <20120820134734.17404.53946.stgit@localhost.localdomain>

No need to assign transports backchannel server explicitly in
nfs41_callback_up() -  there is nfs_callback_bc_serv() function for this.
By using it, nfs4_callback_up() and nfs41_callback_up() can be called without
transport argument.

Note: service have to be passed to nfs_callback_bc_serv() instead of callback,
since callback link can be uninitialized.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
---
 fs/nfs/callback.c |   34 +++++++++++++++++-----------------
 1 files changed, 17 insertions(+), 17 deletions(-)

diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c
index a53b4e5..a528cb7 100644
--- a/fs/nfs/callback.c
+++ b/fs/nfs/callback.c
@@ -104,7 +104,7 @@ nfs4_callback_svc(void *vrqstp)
  * Prepare to bring up the NFSv4 callback service
  */
 static struct svc_rqst *
-nfs4_callback_up(struct svc_serv *serv, struct rpc_xprt *xprt)
+nfs4_callback_up(struct svc_serv *serv)
 {
 	return svc_prepare_thread(serv, &serv->sv_pools[0], NUMA_NO_NODE);
 }
@@ -160,16 +160,10 @@ nfs41_callback_svc(void *vrqstp)
  * Bring up the NFSv4.1 callback service
  */
 static struct svc_rqst *
-nfs41_callback_up(struct svc_serv *serv, struct rpc_xprt *xprt)
+nfs41_callback_up(struct svc_serv *serv)
 {
 	struct svc_rqst *rqstp;
 
-	/*
-	 * Save the svc_serv in the transport so that it can
-	 * be referenced when the session backchannel is initialized
-	 */
-	xprt->bc_serv = serv;
-
 	INIT_LIST_HEAD(&serv->sv_cb_list);
 	spin_lock_init(&serv->sv_cb_lock);
 	init_waitqueue_head(&serv->sv_cb_waitq);
@@ -184,21 +178,25 @@ nfs41_callback_up(struct svc_serv *serv, struct rpc_xprt *xprt)
 }
 
 static inline int nfs_minorversion_callback_svc_setup(u32 minorversion,
-		struct svc_serv *serv, struct rpc_xprt *xprt,
+		struct svc_serv *serv,
 		struct svc_rqst **rqstpp, int (**callback_svc)(void *vrqstp))
 {
 	if (minorversion) {
-		*rqstpp = nfs41_callback_up(serv, xprt);
+		*rqstpp = nfs41_callback_up(serv);
 		*callback_svc = nfs41_callback_svc;
 	}
 	return minorversion;
 }
 
 static inline void nfs_callback_bc_serv(u32 minorversion, struct rpc_xprt *xprt,
-		struct nfs_callback_data *cb_info)
+		struct svc_serv *serv)
 {
 	if (minorversion)
-		xprt->bc_serv = cb_info->serv;
+		/*
+		 * Save the svc_serv in the transport so that it can
+		 * be referenced when the session backchannel is initialized
+		 */
+		xprt->bc_serv = serv;
 }
 #else
 static int nfs41_callback_up_net(struct svc_serv *serv, struct net *net)
@@ -207,14 +205,14 @@ static int nfs41_callback_up_net(struct svc_serv *serv, struct net *net)
 }
 
 static inline int nfs_minorversion_callback_svc_setup(u32 minorversion,
-		struct svc_serv *serv, struct rpc_xprt *xprt,
+		struct svc_serv *serv,
 		struct svc_rqst **rqstpp, int (**callback_svc)(void *vrqstp))
 {
 	return 0;
 }
 
 static inline void nfs_callback_bc_serv(u32 minorversion, struct rpc_xprt *xprt,
-		struct nfs_callback_data *cb_info)
+		struct svc_serv *serv)
 {
 }
 #endif /* CONFIG_NFS_V4_1 */
@@ -318,7 +316,7 @@ int nfs_callback_up(u32 minorversion, struct rpc_xprt *xprt)
 	}
 
 	if (cb_info->users++ || cb_info->task != NULL) {
-		nfs_callback_bc_serv(minorversion, xprt, cb_info);
+		nfs_callback_bc_serv(minorversion, xprt, serv);
 		goto out;
 	}
 
@@ -326,11 +324,13 @@ int nfs_callback_up(u32 minorversion, struct rpc_xprt *xprt)
 	if (ret < 0)
 		goto err_net;
 
+	nfs_callback_bc_serv(minorversion, xprt, serv);
+
 	minorversion_setup =  nfs_minorversion_callback_svc_setup(minorversion,
-					serv, xprt, &rqstp, &callback_svc);
+					serv, &rqstp, &callback_svc);
 	if (!minorversion_setup) {
 		/* v4.0 callback setup */
-		rqstp = nfs4_callback_up(serv, xprt);
+		rqstp = nfs4_callback_up(serv);
 		callback_svc = nfs4_callback_svc;
 	}
 


  parent reply	other threads:[~2012-08-20 14:04 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-08-20 13:59 [PATCH v4 00/10] NFS: callback threads containerization Stanislav Kinsbursky
2012-08-20 14:00 ` [PATCH v4 01/10] NFS: pass net to nfs_callback_down() Stanislav Kinsbursky
2012-08-20 14:00 ` [PATCH v4 02/10] NFS: callback service creation function introduced Stanislav Kinsbursky
2012-08-20 14:00 ` [PATCH v4 03/10] NFS: move per-net callback thread initialization to nfs_callback_up_net() Stanislav Kinsbursky
2012-08-20 14:00 ` Stanislav Kinsbursky [this message]
2012-08-20 14:00 ` [PATCH v4 05/10] NFS: callback service start function introduced Stanislav Kinsbursky
2012-08-20 14:00 ` [PATCH v4 06/10] NFS: callback up - users counting cleanup Stanislav Kinsbursky
2012-08-20 14:00 ` [PATCH v4 07/10] NFS: make nfs_callback_tcpport per network context Stanislav Kinsbursky
2012-08-20 14:00 ` [PATCH v4 08/10] NFS: make nfs_callback_tcpport6 " Stanislav Kinsbursky
2012-08-20 14:00 ` [PATCH v4 09/10] NFS: callback per-net usage counting introduced Stanislav Kinsbursky
2012-08-20 14:00 ` [PATCH v4 10/10] NFS: add debug messages to callback down function Stanislav Kinsbursky

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=20120820140021.17404.53651.stgit@localhost.localdomain \
    --to=skinsbursky@parallels.com \
    --cc=Trond.Myklebust@netapp.com \
    --cc=bfields@fieldses.org \
    --cc=devel@openvz.org \
    --cc=linux-kernel@vger.kernel.org \
    --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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).