JFS_DISCARD
if (!(JFS_SBI(sb)->flag & JFS_DISCARD))
if (JFS_SBI(sb)->flag & JFS_DISCARD)
ctx->flag |= JFS_DISCARD;
ctx->flag &= ~JFS_DISCARD;
ctx->flag |= JFS_DISCARD;
if (sbi->flag & JFS_DISCARD) {
sbi->flag &= ~JFS_DISCARD;
if (sbi->flag & JFS_DISCARD)