From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file
---
kernel/block/mq-deadline-main.c | 18 +++++++++++++++---
1 files changed, 15 insertions(+), 3 deletions(-)
diff --git a/kernel/block/mq-deadline-main.c b/kernel/block/mq-deadline-main.c
index cdcf72e..560752a 100644
--- a/kernel/block/mq-deadline-main.c
+++ b/kernel/block/mq-deadline-main.c
@@ -793,6 +793,18 @@
rq->elv.priv[0] = NULL;
}
+static bool dd_has_write_work(struct blk_mq_hw_ctx *hctx)
+{
+ struct deadline_data *dd = hctx->queue->elevator->elevator_data;
+ enum dd_prio p;
+
+ for (p = 0; p <= DD_PRIO_MAX; p++)
+ if (!list_empty_careful(&dd->per_prio[p].fifo_list[DD_WRITE]))
+ return true;
+
+ return false;
+}
+
/*
* Callback from inside blk_mq_free_request().
*
@@ -816,7 +828,6 @@
struct dd_blkcg *blkcg = rq->elv.priv[0];
const u8 ioprio_class = dd_rq_ioclass(rq);
const enum dd_prio prio = ioprio_class_to_prio[ioprio_class];
- struct dd_per_prio *per_prio = &dd->per_prio[prio];
dd_count(dd, completed, prio);
ddcg_count(blkcg, completed, ioprio_class);
@@ -826,9 +837,10 @@
spin_lock_irqsave(&dd->zone_lock, flags);
blk_req_zone_write_unlock(rq);
- if (!list_empty(&per_prio->fifo_list[DD_WRITE]))
- blk_mq_sched_mark_restart_hctx(rq->mq_hctx);
spin_unlock_irqrestore(&dd->zone_lock, flags);
+
+ if (dd_has_write_work(rq->mq_hctx))
+ blk_mq_sched_mark_restart_hctx(rq->mq_hctx);
}
}
--
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