1 files changed, 12 insertions, 6 deletions

diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index f66a3be12fd6..1d81fc4c3058 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -115,9 +115,9 @@ struct afs_call {
 	struct afs_vnode	*lvnode;	/* vnode being locked */
 	void			*request;	/* request data (first part) */
 	struct address_space	*mapping;	/* Pages being written from */
-	struct iov_iter		iter;		/* Buffer iterator */
-	struct iov_iter		*_iter;		/* Iterator currently in use */
-	union {	/* Convenience for ->iter */
+	struct iov_iter		def_iter;	/* Default buffer/data iterator */
+	struct iov_iter		*iter;		/* Iterator currently in use */
+	union {	/* Convenience for ->def_iter */
 		struct kvec	kvec[1];
 		struct bio_vec	bvec[1];
 	};
@@ -910,7 +910,6 @@ extern int afs_silly_iput(struct dentry *, struct inode *);
 /*
  * dynroot.c
  */
-extern const struct file_operations afs_dynroot_file_operations;
 extern const struct inode_operations afs_dynroot_inode_operations;
 extern const struct dentry_operations afs_dynroot_dentry_operations;
 
@@ -935,6 +934,12 @@ extern int afs_fetch_data(struct afs_vnode *, struct key *, struct afs_read *);
 extern int afs_page_filler(void *, struct page *);
 extern void afs_put_read(struct afs_read *);
 
+static inline struct afs_read *afs_get_read(struct afs_read *req)
+{
+	refcount_inc(&req->usage);
+	return req;
+}
+
 /*
  * flock.c
  */
@@ -1137,7 +1142,7 @@ static inline void afs_extract_begin(struct afs_call *call, void *buf, size_t si
 {
 	call->kvec[0].iov_base = buf;
 	call->kvec[0].iov_len = size;
-	iov_iter_kvec(&call->iter, READ, call->kvec, 1, size);
+	iov_iter_kvec(&call->def_iter, READ, call->kvec, 1, size);
 }
 
 static inline void afs_extract_to_tmp(struct afs_call *call)
@@ -1152,7 +1157,7 @@ static inline void afs_extract_to_tmp64(struct afs_call *call)
 
 static inline void afs_extract_discard(struct afs_call *call, size_t size)
 {
-	iov_iter_discard(&call->iter, READ, size);
+	iov_iter_discard(&call->def_iter, READ, size);
 }
 
 static inline void afs_extract_to_buf(struct afs_call *call, size_t size)
@@ -1217,6 +1222,7 @@ extern void afs_cache_permit(struct afs_vnode *, struct key *, unsigned int,
 			     struct afs_status_cb *);
 extern void afs_zap_permits(struct rcu_head *);
 extern struct key *afs_request_key(struct afs_cell *);
+extern struct key *afs_request_key_rcu(struct afs_cell *);
 extern int afs_check_permit(struct afs_vnode *, struct key *, afs_access_t *);
 extern int afs_permission(struct inode *, int);
 extern void __exit afs_clean_up_permit_cache(void);