fs/f2fs/node.c

1543 	struct page *last_page = NULL;
1558 				f2fs_put_page(last_page, 0);
1583 			if (last_page)
1584 				f2fs_put_page(last_page, 0);
1587 			last_page = page;
1593 	return last_page;
1760 	struct page *last_page = NULL;
1767 		last_page = last_fsync_dnode(sbi, ino);
1768 		if (IS_ERR_OR_NULL(last_page))
1769 			return PTR_ERR_OR_ZERO(last_page);
1785 				f2fs_put_page(last_page, 0);
1806 			if (!PageDirty(page) && page != last_page) {
1816 			if (!atomic || page == last_page) {
1835 						page == last_page,
1840 				f2fs_put_page(last_page, 0);
1846 			if (page == last_page) {
1860 			   ino, last_page->index);
1861 		lock_page(last_page);
1862 		f2fs_wait_on_page_writeback(last_page, NODE, true, true);
1863 		set_page_dirty(last_page);
1864 		unlock_page(last_page);