linux/debian/patches/patchset-xanmod/xanmod/0004-XANMOD-block-mq-deadline-Increase-write-priority-to-.patch

From d23f0554f1b381f082dc81a6f3c523b90043b941 Mon Sep 17 00:00:00 2001
From: Alexandre Frade <kernel@xanmod.org>
Date: Wed, 11 May 2022 18:56:51 +0000
Subject: [PATCH 06/18] XANMOD: block/mq-deadline: Increase write priority to
 improve responsiveness

Signed-off-by: Alexandre Frade <kernel@xanmod.org>
---
 block/mq-deadline.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

--- a/block/mq-deadline.c
+++ b/block/mq-deadline.c
@@ -4,6 +4,9 @@
  *  for the blk-mq scheduling framework
  *
  *  Copyright (C) 2016 Jens Axboe <axboe@kernel.dk>
+ *
+ *  Tunes for responsiveness by Alexandre Frade
+ *  (C) 2022 Alexandre Frade <kernel@xanmod.org>
  */
 #include <linux/kernel.h>
 #include <linux/fs.h>
@@ -28,13 +31,13 @@
  * See Documentation/block/deadline-iosched.rst
  */
 static const int read_expire = HZ / 2;  /* max time before a read is submitted. */
-static const int write_expire = 5 * HZ; /* ditto for writes, these limits are SOFT! */
+static const int write_expire = HZ;     /* ditto for writes, these limits are SOFT! */
 /*
  * Time after which to dispatch lower priority requests even if higher
  * priority requests are pending.
  */
 static const int prio_aging_expire = 10 * HZ;
-static const int writes_starved = 2;    /* max times reads can starve a write */
+static const int writes_starved = 1;    /* max times reads can starve a write */
 static const int fifo_batch = 16;       /* # of sequential requests treated as one
 				     by the above parameters. For throughput. */