GC_URGENT_MID
seq_printf(s, " - Urgent Mid : %d\n", sbi->gc_reclaimed_segs[GC_URGENT_MID]);
if (sbi->gc_mode == GC_URGENT_MID)
sbi->gc_mode == GC_URGENT_MID) {
case GC_URGENT_MID:
sbi->gc_mode = GC_URGENT_MID;