threshold         370 gc/allchblk.c      unsigned short last_rec, threshold;
threshold         378 gc/allchblk.c  	threshold = (unsigned short)(GC_gc_no - UNMAP_THRESHOLD);
threshold         380 gc/allchblk.c  	if ((last_rec > GC_gc_no || last_rec < threshold)
threshold         381 gc/allchblk.c  	    && threshold < GC_gc_no /* not recently wrapped */) {