blk-iocost: Fix some typos in comments

Fix some typos in comments.

Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/block/blk-iocost.c b/block/blk-iocost.c
index 8e20fe4..087ae21 100644 (file)
--- a/block/blk-iocost.c
+++ b/block/blk-iocost.c
@@ -39,7 +39,7 @@
  * On top of that, a size cost proportional to the length of the IO is
  * added.  While simple, this model captures the operational
  * characteristics of a wide varienty of devices well enough.  Default
- * paramters for several different classes of devices are provided and the
+ * parameters for several different classes of devices are provided and the
  * parameters can be configured from userspace via
  * /sys/fs/cgroup/io.cost.model.
  *
@@ -77,7 +77,7 @@
  *
  * This constitutes the basis of IO capacity distribution.  Each cgroup's
  * vtime is running at a rate determined by its hweight.  A cgroup tracks
- * the vtime consumed by past IOs and can issue a new IO iff doing so
+ * the vtime consumed by past IOs and can issue a new IO if doing so
  * wouldn't outrun the current device vtime.  Otherwise, the IO is
  * suspended until the vtime has progressed enough to cover it.
  *
@@ -155,7 +155,7 @@
  * Instead of debugfs or other clumsy monitoring mechanisms, this
  * controller uses a drgn based monitoring script -
  * tools/cgroup/iocost_monitor.py.  For details on drgn, please see
- * https://github.com/osandov/drgn.  The ouput looks like the following.
+ * https://github.com/osandov/drgn.  The output looks like the following.
  *
  *  sdb RUN   per=300ms cur_per=234.218:v203.695 busy= +1 vrate= 62.12%
  *                 active      weight      hweight% inflt% dbt  delay usages%
@@ -492,7 +492,7 @@ struct ioc_gq {
        /*
         * `vtime` is this iocg's vtime cursor which progresses as IOs are
         * issued.  If lagging behind device vtime, the delta represents
-        * the currently available IO budget.  If runnning ahead, the
+        * the currently available IO budget.  If running ahead, the
         * overage.
         *
         * `vtime_done` is the same but progressed on completion rather
@@ -1046,7 +1046,7 @@ static void __propagate_weights(struct ioc_gq *iocg, u32 active, u32 inuse,
 
                /*
                 * The delta between inuse and active sums indicates that
-                * that much of weight is being given away.  Parent's inuse
+                * much of weight is being given away.  Parent's inuse
                 * and active should reflect the ratio.
                 */
                if (parent->child_active_sum) {
@@ -2400,7 +2400,7 @@ static u64 adjust_inuse_and_calc_cost(struct ioc_gq *iocg, u64 vtime,
                return cost;
 
        /*
-        * We only increase inuse during period and do so iff the margin has
+        * We only increase inuse during period and do so if the margin has
         * deteriorated since the previous adjustment.
         */
        if (margin >= iocg->saved_margin || margin >= margins->low ||