Symbol: MMF_DUMP_FILTER_BITS
fs/proc/base.c
2978
for (i = 0, mask = 1; i < MMF_DUMP_FILTER_BITS; i++, mask <<= 1) {
include/linux/mm_types.h
1939
((BIT(MMF_DUMP_FILTER_BITS) - 1) << MMF_DUMP_FILTER_SHIFT)