From: Andy Adamson <andros@netapp.com>
Date: Wed, 1 Apr 2009 13:23:18 +0000 (-0400)
Subject: nfs41: Release backchannel resources associated with session
X-Git-Tag: v2.6.31-rc1~58^2~3^2~15
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5a0ffe544c54f62be99751e369f4d0f44bd5ee19;p=pandora-kernel.git

nfs41: Release backchannel resources associated with session

Frees the preallocated backchannel resources that are associated with
this session when the session is destroyed.

A backchannel is currently created once per session. Destroy the backchannel
only when the session is destroyed.

Signed-off-by: Ricardo Labiaga <ricardo.labiaga@netapp.com>
Signed-off-by: Andy Adamson<andros@netapp.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
---

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 4213c8814997..5da939d577d5 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -49,6 +49,7 @@
 #include <linux/namei.h>
 #include <linux/mount.h>
 #include <linux/module.h>
+#include <linux/sunrpc/bc_xprt.h>
 
 #include "nfs4_fs.h"
 #include "delegation.h"
@@ -4481,6 +4482,11 @@ struct nfs4_session *nfs4_alloc_session(struct nfs_client *clp)
 
 void nfs4_destroy_session(struct nfs4_session *session)
 {
+	nfs4_proc_destroy_session(session);
+	dprintk("%s Destroy backchannel for xprt %p\n",
+		__func__, session->clp->cl_rpcclient->cl_xprt);
+	xprt_destroy_backchannel(session->clp->cl_rpcclient->cl_xprt,
+				NFS41_BC_MIN_CALLBACKS);
 	nfs4_destroy_slot_table(session);
 	kfree(session);
 }
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