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>
diff --git a/mm/filemap.c b/mm/filemap.c
index 1396412..70c048e 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1698,7 +1698,7 @@
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);