Author: imp
Date: Mon Nov 26 22:50:30 2018
New Revision: 341003
URL: https://svnweb.freebsd.org/changeset/base/341003
Log:
Minor tweaks to the formatting
Tweak the format of the trim + read bias code. Add similar debug to
the read + writes case.
Spondored by: Netflix
Modified:
head/sys/cam/cam_iosched.c
Modified: head/sys/cam/cam_iosched.c
==============================================================================
--- head/sys/cam/cam_iosched.c Mon Nov 26 22:45:58 2018 (r341002)
+++ head/sys/cam/cam_iosched.c Mon Nov 26 22:50:30 2018 (r341003)
@@ -1240,7 +1240,7 @@ cam_iosched_get_write(struct cam_iosched_softc *isc)
"Reads present and current_read_bias is %d queued "
"writes %d queued reads %d\n",
isc->current_read_bias, isc->write_stats.queued,
- isc->read_stats.queued);
+ isc->read_stats.queued);
isc->current_read_bias--;
/* We're not limiting writes, per se, just doing reads first */
return NULL;
@@ -1326,14 +1326,18 @@ cam_iosched_get_trim(struct cam_iosched_softc *isc)
if (!cam_iosched_has_more_trim(isc))
return NULL;
#ifdef CAM_IOSCHED_DYNAMIC
+ /*
+ * If pending read, prefer that based on current read bias setting. The
+ * read bias is shared for both writes and TRIMs, but on TRIMs the bias
+ * is for a combined TRIM not a single TRIM request that's come in.
+ */
if (do_dynamic_iosched) {
- /*
- * If pending read, prefer that based on current read bias
- * setting. The read bias is shared for both writes and
- * TRIMs, but on TRIMs the bias is for a combined TRIM
- * not a single TRIM request that's come in.
- */
if (bioq_first(&isc->bio_queue) && isc->current_read_bias) {
+ if (iosched_debug)
+ printf("Reads present and current_read_bias is
%d"
+ " queued trims %d queued reads %d\n",
+ isc->current_read_bias,
isc->trim_stats.queued,
+ isc->read_stats.queued);
isc->current_read_bias--;
/* We're not limiting TRIMS, per se, just doing reads
first */
return NULL;
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