mm/filemap.c: Use existing variable

Use the variable write_len instead of ov_iter_count(from).

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: haiqing.shq <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Cc: Jan Kara <[email protected]>
Cc: Al Viro <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

diff --git a/mm/filemap.c b/mm/filemap.c
index 41586009fa4228c91a9988ff1c90a763709b039a..0b8c6de6d9952fb58d67a32c43c167f6520aece9 100644 (file)
--- 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,