BLKG_RWSTAT_READ
(tmp.cnt[BLKG_RWSTAT_READ] + tmp.cnt[BLKG_RWSTAT_WRITE]) >> 9);
[BLKG_RWSTAT_READ] = "Read",
v = rwstat->cnt[BLKG_RWSTAT_READ] +
return tmp.cnt[BLKG_RWSTAT_READ] + tmp.cnt[BLKG_RWSTAT_WRITE];
cnt = &rwstat->cpu_cnt[BLKG_RWSTAT_READ];