Hello, Vivek. On Wed, Apr 23, 2014 at 03:21:09PM -0400, Vivek Goyal wrote: > What about sync/async differentiation? Throttling layer seems to flag a > request sync > only if bio->bi_rw flag has REQ_SYNC set. While CFQ seems to consider > request sync if bio is either read or bio->bi_rw has REQ_SYNC flag set.
Working on this again, AFAICS, both treat REQ_SYNC the same way as far as stats are concerned. If SYNC is set, it's sync; otherwise, it's accounted as async whether read or write. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
