NFSv4.1 add nfs_inode book keeping for mdsthreshold

Keep track of the number of bytes read or written via buffered, direct, and
mem-mapped i/o for use by mdsthreshold size_io hints.

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index c47a46eaf905..23d170bc44f4 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -447,6 +447,7 @@ static ssize_t nfs_direct_read(struct kiocb *iocb, const struct iovec *iov,
         result = nfs_direct_read_schedule_iovec(dreq, iov, nr_segs, pos);
         if (!result)
                 result = nfs_direct_wait(dreq);
+        NFS_I(inode)->read_io += result;
 out_release:
         nfs_direct_req_release(dreq);
 out:
@@ -785,6 +786,7 @@ static ssize_t nfs_direct_write_schedule_iovec(struct nfs_direct_req *dreq,
                 pos += vec->iov_len;
         }
         nfs_pageio_complete(&desc);
+        NFS_I(dreq->inode)->write_io += desc.pg_bytes_written;
 
         /*
          * If no bytes were started, return the error, and let the