EXT4_VALID_FS
sbi->s_mount_state &= ~EXT4_VALID_FS;
sbi->s_es->s_state &= cpu_to_le16(~EXT4_VALID_FS);
if (!(sbi->s_mount_state & EXT4_VALID_FS))
es->s_state &= cpu_to_le16(~EXT4_VALID_FS);
if (!(es->s_state & cpu_to_le16(EXT4_VALID_FS)) &&
(sbi->s_mount_state & EXT4_VALID_FS))