NFS: Change nfs_find_client() to take "struct sockaddr *"

Adjust arguments and callers of nfs_find_client() to pass a
"struct sockaddr *" instead of "struct sockaddr_in *" to support non-IPv4
addresses.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: Aurelien Charbon <aurelien.charbon@ext.bull.net>

Trond: Also fix up protocol version number argument in nfs_find_client() to
use the correct u32 type.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 44fe7fd..73bf4ec 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -242,7 +242,7 @@
  * Find a client by IP address and protocol version
  * - returns NULL if no such client
  */
-struct nfs_client *_nfs_find_client(const struct sockaddr *addr, int nfsversion)
+struct nfs_client *nfs_find_client(const struct sockaddr *addr, u32 nfsversion)
 {
 	struct nfs_client *clp;
 
@@ -272,11 +272,6 @@
 	return NULL;
 }
 
-struct nfs_client *nfs_find_client(const struct sockaddr_in *addr, int nfsversion)
-{
-	return _nfs_find_client((const struct sockaddr *)addr, nfsversion);
-}
-
 /*
  * Find an nfs_client on the list that matches the initialisation data
  * that is supplied.