Merge branch 'urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/writeback

		struct super_block *sb = inode->i_sb;

		if (!grab_super_passive(sb)) {

			requeue_io(inode, wb);

			/*

			 * grab_super_passive() may fail consistently due to

			 * s_umount being grabbed by someone else. Don't use

			 * requeue_io() to avoid busy retrying the inode/sb.

			 */

			redirty_tail(inode, wb);

			continue;

		}

		wrote += writeback_sb_inodes(sb, wb, work);