ocfs2: use filemap_fdatawrite_wbc instead of generic_writepages

filemap_fdatawrite_wbc is a fairly thing wrapper around do_writepages, and
the big difference there is support for cgroup writeback, which is not
supported by ocfs2, and the potential to use ->writepages instead of
->writepage, which ocfs2 does not currently implement but eventually
should.

Link: https://lkml.kernel.org/r/20221229161031.391878-6-hch@lst.deSigned-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

fs/ocfs2/journal.c

@@ -852,7 +852,7 @@ static int ocfs2_journal_submit_inode_data_buffers(struct jbd2_inode *jinode)
 		.range_end = jinode->i_dirty_end,
 	};
 
-	return generic_writepages(mapping, &wbc);
+	return filemap_fdatawrite_wbc(mapping, &wbc);
 }
 
 int ocfs2_journal_init(struct ocfs2_super *osb, int *dirty)