SUNRPC: introduce cache_detail->cache_request callback

This callback will allow to simplify upcalls in further patches in this
series.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
diff --git a/fs/nfs/dns_resolve.c b/fs/nfs/dns_resolve.c
index 9cbc98a..55bc5d1 100644
--- a/fs/nfs/dns_resolve.c
+++ b/fs/nfs/dns_resolve.c
@@ -144,7 +144,7 @@
 
 	ret = nfs_cache_upcall(cd, key->hostname);
 	if (ret)
-		ret = sunrpc_cache_pipe_upcall(cd, ch, nfs_dns_request);
+		ret = sunrpc_cache_pipe_upcall(cd, ch, cd->cache_request);
 	return ret;
 }
 
@@ -359,6 +359,7 @@
 	.name		= "dns_resolve",
 	.cache_put	= nfs_dns_ent_put,
 	.cache_upcall	= nfs_dns_upcall,
+	.cache_request	= nfs_dns_request,
 	.cache_parse	= nfs_dns_parse,
 	.cache_show	= nfs_dns_show,
 	.match		= nfs_dns_match,
diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index 8e9df45..0e16c7f 100644
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -69,7 +69,7 @@
 
 static int expkey_upcall(struct cache_detail *cd, struct cache_head *h)
 {
-	return sunrpc_cache_pipe_upcall(cd, h, expkey_request);
+	return sunrpc_cache_pipe_upcall(cd, h, cd->cache_request);
 }
 
 static struct svc_expkey *svc_expkey_update(struct cache_detail *cd, struct svc_expkey *new,
@@ -246,6 +246,7 @@
 	.name		= "nfsd.fh",
 	.cache_put	= expkey_put,
 	.cache_upcall	= expkey_upcall,
+	.cache_request	= expkey_request,
 	.cache_parse	= expkey_parse,
 	.cache_show	= expkey_show,
 	.match		= expkey_match,
@@ -340,7 +341,7 @@
 
 static int svc_export_upcall(struct cache_detail *cd, struct cache_head *h)
 {
-	return sunrpc_cache_pipe_upcall(cd, h, svc_export_request);
+	return sunrpc_cache_pipe_upcall(cd, h, cd->cache_request);
 }
 
 static struct svc_export *svc_export_update(struct svc_export *new,
@@ -714,6 +715,7 @@
 	.name		= "nfsd.export",
 	.cache_put	= svc_export_put,
 	.cache_upcall	= svc_export_upcall,
+	.cache_request	= svc_export_request,
 	.cache_parse	= svc_export_parse,
 	.cache_show	= svc_export_show,
 	.match		= svc_export_match,
diff --git a/fs/nfsd/nfs4idmap.c b/fs/nfsd/nfs4idmap.c
index a1f10c0..9033dfd 100644
--- a/fs/nfsd/nfs4idmap.c
+++ b/fs/nfsd/nfs4idmap.c
@@ -142,7 +142,7 @@
 static int
 idtoname_upcall(struct cache_detail *cd, struct cache_head *ch)
 {
-	return sunrpc_cache_pipe_upcall(cd, ch, idtoname_request);
+	return sunrpc_cache_pipe_upcall(cd, ch, cd->cache_request);
 }
 
 static int
@@ -193,6 +193,7 @@
 	.name		= "nfs4.idtoname",
 	.cache_put	= ent_put,
 	.cache_upcall	= idtoname_upcall,
+	.cache_request	= idtoname_request,
 	.cache_parse	= idtoname_parse,
 	.cache_show	= idtoname_show,
 	.warn_no_listener = warn_no_idmapd,
@@ -323,7 +324,7 @@
 static int
 nametoid_upcall(struct cache_detail *cd, struct cache_head *ch)
 {
-	return sunrpc_cache_pipe_upcall(cd, ch, nametoid_request);
+	return sunrpc_cache_pipe_upcall(cd, ch, cd->cache_request);
 }
 
 static int
@@ -366,6 +367,7 @@
 	.name		= "nfs4.nametoid",
 	.cache_put	= ent_put,
 	.cache_upcall	= nametoid_upcall,
+	.cache_request	= nametoid_request,
 	.cache_parse	= nametoid_parse,
 	.cache_show	= nametoid_show,
 	.warn_no_listener = warn_no_idmapd,