From 3cb7b121ff4dfbf202845b8ea27d9a437eae210f Mon Sep 17 00:00:00 2001
From: "haiqing.shq" <leviathan0992@gmail.com>
Date: Fri, 26 Oct 2018 15:07:22 -0700
Subject: mm/filemap.c: Use existing variable

Use the variable write_len instead of ov_iter_count(from).

Link: http://lkml.kernel.org/r/1537375855-2088-1-git-send-email-leviathan0992@gmail.com
Signed-off-by: haiqing.shq <leviathan0992@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Jan Kara <jack@suse.cz>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 mm/filemap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'mm/filemap.c')

diff --git a/mm/filemap.c b/mm/filemap.c
index 41586009fa42..0b8c6de6d995 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -3027,7 +3027,7 @@ generic_file_direct_write(struct kiocb *iocb, struct iov_iter *from)
 	if (iocb->ki_flags & IOCB_NOWAIT) {
 		/* If there are pages to writeback, return */
 		if (filemap_range_has_page(inode->i_mapping, pos,
-					   pos + iov_iter_count(from)))
+					   pos + write_len))
 			return -EAGAIN;
 	} else {
 		written = filemap_write_and_wait_range(mapping, pos,
-- 
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