[PATCH 3/5] NFS: Account for NFS bytes read via the splice API

Bytes read via the splice API should be accounted for in the NFS
performance statistics.

Signed-off-by: Chuck Lever <chuck.lever@...>
---

 fs/nfs/file.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 3c65a6b..64278c8 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
 <at>  <at>  -284,8 +284,11  <at>  <at>  nfs_file_splice_read(struct file *filp, loff_t *ppos,
 		(unsigned long) count, (unsigned long long) *ppos);

 	res = nfs_revalidate_mapping(inode, filp->f_mapping);
-	if (!res)
+	if (!res) {
 		res = generic_file_splice_read(filp, ppos, pipe, count, flags);
+		if (res > 0)
+			nfs_add_stats(inode, NFSIOS_NORMALREADBYTES, res);
+	}
 	return res;
 }

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