nfsd: nfsd_splice_read and nfsd_readv should return __be32

The callers expect a __be32 return and the functions they call return
__be32, so having these return int is just wrong. Also, nfsd_finish_read
can be made static.
Signed-off-by: Jeff Layton <jlayton@primarydata.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

fs/nfsd/vfs.c

@@ -819,7 +819,8 @@ static int nfsd_direct_splice_actor(struct pipe_inode_info *pipe,
 	return __splice_from_pipe(pipe, sd, nfsd_splice_actor);
 }
 
-__be32 nfsd_finish_read(struct file *file, unsigned long *count, int host_err)
+static __be32
+nfsd_finish_read(struct file *file, unsigned long *count, int host_err)
 {
 	if (host_err >= 0) {
 		nfsdstats.io_read += host_err;
@@ -830,7 +831,7 @@ __be32 nfsd_finish_read(struct file *file, unsigned long *count, int host_err)
 		return nfserrno(host_err);
 }
 
-int nfsd_splice_read(struct svc_rqst *rqstp,
+__be32 nfsd_splice_read(struct svc_rqst *rqstp,
 		     struct file *file, loff_t offset, unsigned long *count)
 {
 	struct splice_desc sd = {
@@ -846,7 +847,7 @@ int nfsd_splice_read(struct svc_rqst *rqstp,
 	return nfsd_finish_read(file, count, host_err);
 }
 
-int nfsd_readv(struct file *file, loff_t offset, struct kvec *vec, int vlen,
+__be32 nfsd_readv(struct file *file, loff_t offset, struct kvec *vec, int vlen,
 		unsigned long *count)
 {
 	mm_segment_t oldfs;

fs/nfsd/vfs.h

@@ -74,9 +74,9 @@ struct raparms;
 __be32		nfsd_get_tmp_read_open(struct svc_rqst *, struct svc_fh *,
 				struct file **, struct raparms **);
 void		nfsd_put_tmp_read_open(struct file *, struct raparms *);
-int		nfsd_splice_read(struct svc_rqst *,
+__be32		nfsd_splice_read(struct svc_rqst *,
 				struct file *, loff_t, unsigned long *);
-int		nfsd_readv(struct file *, loff_t, struct kvec *, int,
+__be32		nfsd_readv(struct file *, loff_t, struct kvec *, int,
 				unsigned long *);
 __be32 		nfsd_read(struct svc_rqst *, struct svc_fh *,
 				loff_t, struct kvec *, int, unsigned long *);