SUNRPC: remove "cache_request" argument in sunrpc_cache_pipe_upcall() function

Passing this pointer is redundant since it's stored on cache_detail structure,
which is also passed to sunrpc_cache_pipe_upcall () function.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

fs/nfs/dns_resolve.c

@@ -144,7 +144,7 @@ static int nfs_dns_upcall(struct cache_detail *cd,
 
 	ret = nfs_cache_upcall(cd, key->hostname);
 	if (ret)
-		ret = sunrpc_cache_pipe_upcall(cd, ch, cd->cache_request);
+		ret = sunrpc_cache_pipe_upcall(cd, ch);
 	return ret;
 }
 

include/linux/sunrpc/cache.h

@@ -161,11 +161,7 @@ sunrpc_cache_update(struct cache_detail *detail,
 		    struct cache_head *new, struct cache_head *old, int hash);
 
 extern int
-sunrpc_cache_pipe_upcall(struct cache_detail *detail, struct cache_head *h,
-		void (*cache_request)(struct cache_detail *,
-				      struct cache_head *,
-				      char **,
-				      int *));
+sunrpc_cache_pipe_upcall(struct cache_detail *detail, struct cache_head *h);
 
 
 extern void cache_clean_deferred(void *owner);

net/sunrpc/cache.c

@@ -198,7 +198,7 @@ static int cache_make_upcall(struct cache_detail *cd, struct cache_head *h)
 {
 	if (cd->cache_upcall)
 		return cd->cache_upcall(cd, h);
-	return sunrpc_cache_pipe_upcall(cd, h, cd->cache_request);
+	return sunrpc_cache_pipe_upcall(cd, h);
 }
 
 static inline int cache_is_valid(struct cache_detail *detail, struct cache_head *h)
@@ -1140,11 +1140,7 @@ static bool cache_listeners_exist(struct cache_detail *detail)
  *
  * Each request is at most one page long.
  */
-int sunrpc_cache_pipe_upcall(struct cache_detail *detail, struct cache_head *h,
-		void (*cache_request)(struct cache_detail *,
-				      struct cache_head *,
-				      char **,
-				      int *))
+int sunrpc_cache_pipe_upcall(struct cache_detail *detail, struct cache_head *h)
 {
 
 	char *buf;
@@ -1172,7 +1168,7 @@ int sunrpc_cache_pipe_upcall(struct cache_detail *detail, struct cache_head *h,
 
 	bp = buf; len = PAGE_SIZE;
 
-	cache_request(detail, h, &bp, &len);
+	detail->cache_request(detail, h, &bp, &len);
 
 	if (len < 0) {
 		kfree(buf);