Merge branches 'intel_pstate', 'pm-cpufreq' and 'pm-cpufreq-sched'

[sfrench/cifs-2.6.git] / block / bfq-iosched.c

diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c
index bd8499ef157ce8786c6eaa164448eb0bf9e84c6c..08ce45096350561896fb6c8959c5c04603e98555 100644 (file)
--- a/block/bfq-iosched.c
+++ b/block/bfq-iosched.c
@@ -56,6 +56,11 @@
  * rotational or flash-based devices, and to get the job done quickly
  * for applications consisting in many I/O-bound processes.
  *
+ * NOTE: if the main or only goal, with a given device, is to achieve
+ * the maximum-possible throughput at all times, then do switch off
+ * all low-latency heuristics for that device, by setting low_latency
+ * to 0.
+ *
  * BFQ is described in [1], where also a reference to the initial, more
  * theoretical paper on BFQ can be found. The interested reader can find
  * in the latter paper full details on the main algorithm, as well as