mm/filemap.c: Use existing variable
authorhaiqing.shq <leviathan0992@gmail.com>
Fri, 26 Oct 2018 22:07:22 +0000 (15:07 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 26 Oct 2018 23:26:33 +0000 (16:26 -0700)
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

index 41586009fa4228c91a9988ff1c90a763709b039a..0b8c6de6d9952fb58d67a32c43c167f6520aece9 100644 (file)
@@ -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,