39  * If, after decay, an element gets inserted again, its generation is set to 11b
67  * We use DECAY_BITS bits of PAGE_SHIFT bits for counting decay, i.e., how long
90 #define DECAY(e)		(((e) >> COUNT_BITS) & DECAY_MASK)  macro
139  * Decrement decay value. We're using DECAY_BITS bits to denote decay of an
147 		u8 decay = DECAY(ca->array[i]);  in do_spring_cleaning()  local
149 		if (!decay)  in do_spring_cleaning()
152 		decay--;  in do_spring_cleaning()
155 		ca->array[i] |= (decay << COUNT_BITS);  in do_spring_cleaning()
459 			   i, this, bins[DECAY(ca->array[i])], COUNT(ca->array[i]));  in array_show()
469 	seq_printf(m, "Decay interval: %lld seconds\n", decay_interval);  in array_show()
483 	struct dentry *d, *pfn, *decay, *count, *array, *dfs;  in create_debugfs_nodes()  local
497 	decay = debugfs_create_file("decay_interval", S_IRUSR | S_IWUSR, d,  in create_debugfs_nodes()
499 	if (!decay) {  in create_debugfs_nodes()