SUNRPC: display human-readable procedure name in rpc_iostats output

Add fields to the rpc_procinfo struct that allow the display of a
human-readable name for each procedure in the rpc_iostats output.

Also fix it so that the NFSv4 stats are broken up correctly by
sub-procedure number.  NFSv4 uses only two real RPC procedures:
NULL, and COMPOUND.

Test plan:
Mount with NFSv2, NFSv3, and NFSv4, and do "cat /proc/self/mountstats".

Signed-off-by: Chuck Lever <cel@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/nfs/mount_clnt.c b/fs/nfs/mount_clnt.c
index db99b8f678f8..4a1340358223 100644
--- a/fs/nfs/mount_clnt.c
+++ b/fs/nfs/mount_clnt.c
@@ -137,6 +137,8 @@ static struct rpc_procinfo	mnt_procedures[] = {
           .p_encode             = (kxdrproc_t) xdr_encode_dirpath,      
           .p_decode             = (kxdrproc_t) xdr_decode_fhstatus,
           .p_bufsiz             = MNT_dirpath_sz << 2,
+          .p_statidx            = MNTPROC_MNT,
+          .p_name               = "MOUNT",
         },
 };
 
@@ -146,6 +148,8 @@ static struct rpc_procinfo mnt3_procedures[] = {
           .p_encode             = (kxdrproc_t) xdr_encode_dirpath,
           .p_decode             = (kxdrproc_t) xdr_decode_fhstatus3,
           .p_bufsiz             = MNT_dirpath_sz << 2,
+          .p_statidx            = MOUNTPROC3_MNT,
+          .p_name               = "MOUNT",
         },
 };