Merge "f2fs: avoid race between gc and checkpoint in unmount path"

	if ((flags & MNT_FORCE) || atomic_read(&sb->s_active) > 1) {

		/* to write the latest kbytes_written */

		if (!(sb->s_flags & MS_RDONLY)) {

			struct f2fs_sb_info *sbi = F2FS_SB(sb);

			struct cp_control cpc = {

				.reason = CP_UMOUNT,

			};

			mutex_lock(&sbi->gc_mutex);

			f2fs_write_checkpoint(F2FS_SB(sb), &cpc);

			mutex_unlock(&sbi->gc_mutex);

		}

	}

}