bpf: switch fdget_raw() uses to CLASS(fd_raw, ...)

Swith fdget_raw() use cases in bpf_inode_storage.c to CLASS(fd_raw).

Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>

Author: Al Viro

kernel/bpf/bpf_inode_storage.c

@@ -78,33 +78,29 @@ void bpf_inode_storage_free(struct inode *inode)
 static void *bpf_fd_inode_storage_lookup_elem(struct bpf_map *map, void *key)
 {
 	struct bpf_local_storage_data *sdata;
-	struct fd f = fdget_raw(*(int *)key);
+	CLASS(fd_raw, f)(*(int *)key);
 
-	if (!fd_file(f))
+	if (fd_empty(f))
 		return ERR_PTR(-EBADF);
 
 	sdata = inode_storage_lookup(file_inode(fd_file(f)), map, true);
-	fdput(f);
 	return sdata ? sdata->data : NULL;
 }
 
 static long bpf_fd_inode_storage_update_elem(struct bpf_map *map, void *key,
 					     void *value, u64 map_flags)
 {
 	struct bpf_local_storage_data *sdata;
-	struct fd f = fdget_raw(*(int *)key);
+	CLASS(fd_raw, f)(*(int *)key);
 
-	if (!fd_file(f))
+	if (fd_empty(f))
 		return -EBADF;
-	if (!inode_storage_ptr(file_inode(fd_file(f)))) {
-		fdput(f);
+	if (!inode_storage_ptr(file_inode(fd_file(f))))
 		return -EBADF;
-	}
 
 	sdata = bpf_local_storage_update(file_inode(fd_file(f)),
 					 (struct bpf_local_storage_map *)map,
 					 value, map_flags, GFP_ATOMIC);
-	fdput(f);
 	return PTR_ERR_OR_ZERO(sdata);
 }
 
@@ -123,15 +119,11 @@ static int inode_storage_delete(struct inode *inode, struct bpf_map *map)
 
 static long bpf_fd_inode_storage_delete_elem(struct bpf_map *map, void *key)
 {
-	struct fd f = fdget_raw(*(int *)key);
-	int err;
+	CLASS(fd_raw, f)(*(int *)key);
 
-	if (!fd_file(f))
+	if (fd_empty(f))
 		return -EBADF;
-
-	err = inode_storage_delete(file_inode(fd_file(f)), map);
-	fdput(f);
-	return err;
+	return inode_storage_delete(file_inode(fd_file(f)), map);
 }
 
 /* *gfp_flags* is a hidden argument provided by the verifier */