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authorAndy Adamson <andros@netapp.com>2010-01-26 21:24:04 -0500
committerTrond Myklebust <Trond.Myklebust@netapp.com>2010-02-10 08:31:02 -0500
commitba17686f62db88f6a591121e768a0c83a2a2647d (patch)
treeb32b611d474e062d908af555b012dec0d4f703a5 /net/sunrpc
parent9733f0d9289cbcac4fa03db0cb5aec1ab01c6bc9 (diff)
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 'net/sunrpc')
-rw-r--r--net/sunrpc/svc.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index 538ca433a56..6dcf8c9c784 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -506,6 +506,10 @@ svc_init_buffer(struct svc_rqst *rqstp, unsigned int size)
{
unsigned int pages, arghi;
+ /* bc_xprt uses fore channel allocated buffers */
+ if (svc_is_backchannel(rqstp))
+ return 1;
+
pages = size / PAGE_SIZE + 1; /* extra page as we hold both request and reply.
* We assume one is at most one page
*/