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cam iosched: fix typos in comments

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PR:		220947
Submitted by:	Fabian Keil
Obtained from:	ElectroBSD
This commit is contained in:
Ed Maste 2017-08-18 16:38:33 +00:00
parent cc20157db6
commit 0b4060b073
1 changed files with 11 additions and 11 deletions
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22
sys/cam/cam_iosched.c
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@ -130,13 +130,13 @@ typedef int l_tick_t(struct iop_stats *);
/*
* Called to see if the limiter thinks this IOP can be allowed to
* proceed. If so, the limiter assumes that the while IOP proceeded
* proceed. If so, the limiter assumes that the IOP proceeded
* and makes any accounting of it that's needed.
*/
typedef int l_iop_t(struct iop_stats *, struct bio *);
/*
* Called when an I/O completes so the limiter can updates its
* Called when an I/O completes so the limiter can update its
* accounting. Pending I/Os may complete in any order (even when
* sent to the hardware at the same time), so the limiter may not
* make any assumptions other than this I/O has completed. If it
@ -493,8 +493,8 @@ cam_iosched_bw_caniop(struct iop_stats *ios, struct bio *bp)
{
/*
* So if we have any more bw quota left, allow it,
* otherwise wait. Not, we'll go negative and that's
* OK. We'll just get a lettle less next quota.
* otherwise wait. Note, we'll go negative and that's
* OK. We'll just get a little less next quota.
*
* Note on going negative: that allows us to process
* requests in order better, since we won't allow
@ -639,7 +639,7 @@ cam_iosched_cl_maybe_steer(struct control_loop *clp)
* ~10. At .25 it only takes ~8. However some preliminary data
* from the SSD drives suggests a reasponse time in 10's of
* seconds before latency drops regardless of the new write
* rate. Careful observation will be reqiured to tune this
* rate. Careful observation will be required to tune this
* effectively.
*
* Also, when there's no read traffic, we jack up the write
@ -1214,7 +1214,7 @@ cam_iosched_put_back_trim(struct cam_iosched_softc *isc, struct bio *bp)
* gets the next trim from the trim queue.
*
* Assumes we're called with the periph lock held. It removes this
* trim from the queue and the device must explicitly reinstert it
* trim from the queue and the device must explicitly reinsert it
* should the need arise.
*/
struct bio *
@ -1235,9 +1235,9 @@ cam_iosched_next_trim(struct cam_iosched_softc *isc)
}
/*
* gets the an available trim from the trim queue, if there's no trim
* gets an available trim from the trim queue, if there's no trim
* already pending. It removes this trim from the queue and the device
* must explicitly reinstert it should the need arise.
* must explicitly reinsert it should the need arise.
*
* Assumes we're called with the periph lock held.
*/
@ -1476,7 +1476,7 @@ cam_iosched_clr_work_flags(struct cam_iosched_softc *isc, uint32_t flags)
#ifdef CAM_IOSCHED_DYNAMIC
/*
* After the method presented in Jack Crenshaw's 1998 article "Integer
* Suqare Roots," reprinted at
* Square Roots," reprinted at
* http://www.embedded.com/electronics-blogs/programmer-s-toolbox/4219659/Integer-Square-Roots
* and well worth the read. Briefly, we find the power of 4 that's the
* largest smaller than val. We then check each smaller power of 4 to
@ -1485,7 +1485,7 @@ cam_iosched_clr_work_flags(struct cam_iosched_softc *isc, uint32_t flags)
* accumulating the right answer. It could also have been accumulated
* using a separate root counter, but this code is smaller and faster
* than that method. This method is also integer size invariant.
* It returns floor(sqrt((float)val)), or the larget integer less than
* It returns floor(sqrt((float)val)), or the largest integer less than
* or equal to the square root.
*/
static uint64_t
@ -1553,7 +1553,7 @@ cam_iosched_update(struct iop_stats *iop, sbintime_t sim_latency)
iop->latencies[i]++; /* Put all > 1024ms values into the last bucket. */
/*
* Classic expoentially decaying average with a tiny alpha
* Classic exponentially decaying average with a tiny alpha
* (2 ^ -alpha_bits). For more info see the NIST statistical
* handbook.
*