From f743a7adbd6e230d66a6206fa115b59fec2d88eb Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 22 Nov 2023 01:07:42 +0000
Subject: [PATCH] disable pwm7
---
kernel/drivers/md/raid5.c | 8 +++++---
1 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/kernel/drivers/md/raid5.c b/kernel/drivers/md/raid5.c
index c7bda4b..8eb2347 100644
--- a/kernel/drivers/md/raid5.c
+++ b/kernel/drivers/md/raid5.c
@@ -2069,8 +2069,9 @@
struct raid5_percpu *percpu;
unsigned long cpu;
- cpu = get_cpu();
+ cpu = get_cpu_light();
percpu = per_cpu_ptr(conf->percpu, cpu);
+ spin_lock(&percpu->lock);
if (test_bit(STRIPE_OP_BIOFILL, &ops_request)) {
ops_run_biofill(sh);
overlap_clear++;
@@ -2129,7 +2130,8 @@
if (test_and_clear_bit(R5_Overlap, &dev->flags))
wake_up(&sh->raid_conf->wait_for_overlap);
}
- put_cpu();
+ spin_unlock(&percpu->lock);
+ put_cpu_light();
}
static void free_stripe(struct kmem_cache *sc, struct stripe_head *sh)
@@ -6816,6 +6818,7 @@
__func__, cpu);
return -ENOMEM;
}
+ spin_lock_init(&per_cpu_ptr(conf->percpu, cpu)->lock);
return 0;
}
@@ -6826,7 +6829,6 @@
conf->percpu = alloc_percpu(struct raid5_percpu);
if (!conf->percpu)
return -ENOMEM;
-
err = cpuhp_state_add_instance(CPUHP_MD_RAID5_PREPARE, &conf->node);
if (!err) {
conf->scribble_disks = max(conf->raid_disks,
--
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