cb_sum             86 fs/btrfs/compression.c 	u8 *cb_sum = cb->sums;
cb_sum            102 fs/btrfs/compression.c 		if (memcmp(&csum, cb_sum, csum_size)) {
cb_sum            104 fs/btrfs/compression.c 					csum, cb_sum, cb->mirror_num);
cb_sum            108 fs/btrfs/compression.c 		cb_sum += csum_size;