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/fs/fat/inode.c b/fs/fat/inode.c
index d5237a1..154a6f9 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -191,6 +191,7 @@
struct file *file = iocb->ki_filp;
struct address_space *mapping = file->f_mapping;
struct inode *inode = mapping->host;
+ size_t count = iov_iter_count(iter);
ssize_t ret;
if (rw == WRITE) {
@@ -203,7 +204,7 @@
*
* Return 0, and fallback to normal buffered write.
*/
- loff_t size = offset + iov_length(iter->iov, iter->nr_segs);
+ loff_t size = offset + count;
if (MSDOS_I(inode)->mmu_private < size)
return 0;
}
@@ -215,8 +216,7 @@
ret = blockdev_direct_IO(rw, iocb, inode, iter->iov, offset,
iter->nr_segs, fat_get_block);
if (ret < 0 && (rw & WRITE))
- fat_write_failed(mapping, offset +
- iov_length(iter->iov, iter->nr_segs));
+ fat_write_failed(mapping, offset + count);
return ret;
}