Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Vlastimil Babka <vbabka@suse.cz>
To:     Andrew Morton <akpm@linux-foundation.org>,
        Christoph Lameter <cl@linux.com>,
        David Rientjes <rientjes@google.com>,
        Pekka Enberg <penberg@kernel.org>,
        Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc:     linux-mm@kvack.org, linux-kernel@vger.kernel.org,
        Mike Galbraith <efault@gmx.de>,
        Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
        Thomas Gleixner <tglx@linutronix.de>,
        Mel Gorman <mgorman@techsingularity.net>,
        Jesper Dangaard Brouer <brouer@redhat.com>,
        Jann Horn <jannh@google.com>, Vlastimil Babka <vbabka@suse.cz>
Subject: [PATCH v4 23/35] mm, slub: discard slabs in unfreeze_partials() without irqs disabled
Date:   Thu,  5 Aug 2021 17:19:48 +0200
Message-Id: <20210805152000.12817-24-vbabka@suse.cz>
In-Reply-To: <20210805152000.12817-1-vbabka@suse.cz>
References: <20210805152000.12817-1-vbabka@suse.cz>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

No need for disabled irqs when discarding slabs, so restore them before
discarding.

Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
---
 mm/slub.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mm/slub.c b/mm/slub.c
index 51f8d83d3ea8..4d60bf482735 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -2389,6 +2389,8 @@ static void unfreeze_partials(struct kmem_cache *s,
 	if (n)
 		spin_unlock(&n->list_lock);
 
+	local_irq_restore(flags);
+
 	while (discard_page) {
 		page = discard_page;
 		discard_page = discard_page->next;
@@ -2398,7 +2400,6 @@ static void unfreeze_partials(struct kmem_cache *s,
 		stat(s, FREE_SLAB);
 	}
 
-	local_irq_restore(flags);
 #endif	/* CONFIG_SLUB_CPU_PARTIAL */
 }
 
-- 
2.32.0