blk-throttle: Avoid checking bps/iops limitation if bps or iops is unlimited (87fbeb88) · Commits · 戴 / test

block/blk-throttle.c

+12 −0

Original line number	Diff line number	Diff line
		@@ -901,6 +901,12 @@ static bool tg_with_in_iops_limit(struct throtl_grp tg, struct bio bio,
		unsigned long jiffy_elapsed, jiffy_wait, jiffy_elapsed_rnd;
		u64 tmp;

		if (iops_limit == UINT_MAX) {
		if (wait)
		*wait = 0;
		return true;
		}

		jiffy_elapsed = jiffies - tg->slice_start[rw];

		/* Round up to the next throttle slice, wait time must be nonzero */
		@@ -943,6 +949,12 @@ static bool tg_with_in_bps_limit(struct throtl_grp tg, struct bio bio,
		unsigned long jiffy_elapsed, jiffy_wait, jiffy_elapsed_rnd;
		unsigned int bio_size = throtl_bio_data_size(bio);

		if (bps_limit == U64_MAX) {
		if (wait)
		*wait = 0;
		return true;
		}

		jiffy_elapsed = jiffy_elapsed_rnd = jiffies - tg->slice_start[rw];

		/* Slice has just started. Consider one slice interval */