rpcsvc: Handle more than one payload vectors.

- fops like write can recieve payload data in more than one vector. This can
    happen with write-behind being loaded on client side.

Signed-off-by: Raghavendra G <raghavendra@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>

BUG: 2454 (rdma data corruption)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2454

1 files changed, 5 insertions, 1 deletions

diff --git a/rpc/rpc-lib/src/rpcsvc.h b/rpc/rpc-lib/src/rpcsvc.h
index 98de7fcae..8625600db 100644
--- a/rpc/rpc-lib/src/rpcsvc.h
+++ b/rpc/rpc-lib/src/rpcsvc.h
@@ -46,6 +46,10 @@
 #define NGRPS 16
 #endif /* !NGRPS */
 
+#ifndef MAX_IOVEC
+#define MAX_IOVEC 16
+#endif
+
 #define GF_RPCSVC       "rpc-service"
 #define RPCSVC_THREAD_STACK_SIZE ((size_t)(1024 * GF_UNIT_KB))
 
@@ -193,7 +197,7 @@ struct rpcsvc_request {
          * by the program actors. This is the buffer that will need to
          * be de-xdred by the actor.
          */
-        struct iovec            msg[2];
+        struct iovec            msg[MAX_IOVEC];
         int                     count;
 
         struct iobref          *iobref;