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, 2 insertions, 1 deletions

diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c
index 09cff13528c5..dc69e8f31581 100644
--- a/fs/hfs/inode.c
+++ b/fs/hfs/inode.c
@@ -130,6 +130,7 @@ static ssize_t hfs_direct_IO(int rw, struct kiocb *iocb,
         struct file *file = iocb->ki_filp;
         struct address_space *mapping = file->f_mapping;
         struct inode *inode = file_inode(file)->i_mapping->host;
+        size_t count = iov_iter_count(iter);
         ssize_t ret;
 
         ret = blockdev_direct_IO(rw, iocb, inode, iter->iov, offset,
@@ -141,7 +142,7 @@ static ssize_t hfs_direct_IO(int rw, struct kiocb *iocb,
          */
         if (unlikely((rw & WRITE) && ret < 0)) {
                 loff_t isize = i_size_read(inode);
-                loff_t end = offset + iov_length(iter->iov, iter->nr_segs);
+                loff_t end = offset + count;
 
                 if (end > isize)
                         hfs_write_failed(mapping, end);