SUNRPC: minor optimization of "xid" field in rpc_xprt

Move the xid field in the rpc_xprt structure to be in the same cache line
as the reserve_lock, since these are used at the same time.

Test plan:
None.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h
index 60394fb..0321fb5 100644 (file)
--- a/include/linux/sunrpc/xprt.h
+++ b/include/linux/sunrpc/xprt.h
@@ -157,11 +157,6 @@ struct rpc_xprt {
        unsigned char           shutdown   : 1, /* being shut down */
                                resvport   : 1; /* use a reserved port */
 
-       /*
-        * XID
-        */
-       __u32                   xid;            /* Next XID value to use */
-
        /*
         * State of TCP reply receive stuff
         */
@@ -193,8 +188,8 @@ struct rpc_xprt {
         */
        spinlock_t              transport_lock; /* lock transport info */
        spinlock_t              reserve_lock;   /* lock slot table */
+       u32                     xid;            /* Next XID value to use */
        struct rpc_task *       snd_task;       /* Task blocked in send */
-
        struct list_head        recv;
 
        struct {