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authorAndy Adamson <andros@netapp.com>2010-01-27 05:24:04 +0300
committerTrond Myklebust <Trond.Myklebust@netapp.com>2010-02-10 16:31:02 +0300
commitba17686f62db88f6a591121e768a0c83a2a2647d (patch)
treeb32b611d474e062d908af555b012dec0d4f703a5 /include/linux/sunrpc/bc_xprt.h
parent9733f0d9289cbcac4fa03db0cb5aec1ab01c6bc9 (diff)
downloadlinux-ba17686f62db88f6a591121e768a0c83a2a2647d.tar.xz
nfs41 do not allocate unused back channel pages
Signed-off-by: Andy Adamson <andros@netapp.com> [Trond.Myklebust@netapp.com: moved definition of svc_is_backchannel() into include/linux/sunrpc/bc_xprt.h.] Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'include/linux/sunrpc/bc_xprt.h')
-rw-r--r--include/linux/sunrpc/bc_xprt.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/sunrpc/bc_xprt.h b/include/linux/sunrpc/bc_xprt.h
index 6508f0dc0eff..d7152b451e21 100644
--- a/include/linux/sunrpc/bc_xprt.h
+++ b/include/linux/sunrpc/bc_xprt.h
@@ -38,12 +38,27 @@ int xprt_setup_backchannel(struct rpc_xprt *, unsigned int min_reqs);
void xprt_destroy_backchannel(struct rpc_xprt *, int max_reqs);
void bc_release_request(struct rpc_task *);
int bc_send(struct rpc_rqst *req);
+
+/*
+ * Determine if a shared backchannel is in use
+ */
+static inline int svc_is_backchannel(const struct svc_rqst *rqstp)
+{
+ if (rqstp->rq_server->bc_xprt)
+ return 1;
+ return 0;
+}
#else /* CONFIG_NFS_V4_1 */
static inline int xprt_setup_backchannel(struct rpc_xprt *xprt,
unsigned int min_reqs)
{
return 0;
}
+
+static inline int svc_is_backchannel(const struct svc_rqst *rqstp)
+{
+ return 0;
+}
#endif /* CONFIG_NFS_V4_1 */
#endif /* _LINUX_SUNRPC_BC_XPRT_H */