get rid of pointless iov_length() in ->direct_IO()

all callers have iov_length(iter->iov, iter->nr_segs) == iov_iter_count(iter)

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 1 insertions, 1 deletions

diff --git a/mm/filemap.c b/mm/filemap.c
index 139641274f1e..70c048ea36e0 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1698,7 +1698,7 @@ generic_file_aio_read(struct kiocb *iocb, const struct iovec *iov,
                         goto out; /* skip atime */
                 size = i_size_read(inode);
                 retval = filemap_write_and_wait_range(mapping, pos,
-                                        pos + iov_length(iov, nr_segs) - 1);
+                                        pos + count - 1);
                 if (!retval)
                         retval = mapping->a_ops->direct_IO(READ, iocb, &i, pos);