SUNRPC: Provide a callback to allow free pages allocated during xdr encoding

[linux-2.6-omap-h63xx.git] / include / linux / sunrpc / svc.h

diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h
index facb94488bb14e6874fdf8c40330ab9a80d9fd72..5af8800e0ce328a05aa7cbaeaa0b604ba28b00ab 100644 (file)
--- a/include/linux/sunrpc/svc.h
+++ b/include/linux/sunrpc/svc.h
@@ -185,6 +185,17 @@ xdr_ressize_check(struct svc_rqst *rqstp, u32 *p)
        return vec->iov_len <= PAGE_SIZE;
 }
 
+static inline struct page *
+svc_take_res_page(struct svc_rqst *rqstp)
+{
+       if (rqstp->rq_arghi <= rqstp->rq_argused)
+               return NULL;
+       rqstp->rq_arghi--;
+       rqstp->rq_respages[rqstp->rq_resused] =
+               rqstp->rq_argpages[rqstp->rq_arghi];
+       return rqstp->rq_respages[rqstp->rq_resused++];
+}
+
 static inline int svc_take_page(struct svc_rqst *rqstp)
 {
        if (rqstp->rq_arghi <= rqstp->rq_argused)