linux-kernel - [PATCH v6 22/33] mm, slub: discard slabs in unfreeze

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Message-Id: <20210904105003.11688-23-vbabka@suse.cz>
Date:   Sat,  4 Sep 2021 12:49:52 +0200
From:   Vlastimil Babka <vbabka@...e.cz>
To:     linux-mm@...ck.org, Christoph Lameter <cl@...ux.com>,
        David Rientjes <rientjes@...gle.com>,
        Pekka Enberg <penberg@...nel.org>,
        Joonsoo Kim <iamjoonsoo.kim@....com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        linux-kernel@...r.kernel.org, Mike Galbraith <efault@....de>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Vlastimil Babka <vbabka@...e.cz>
Subject: [PATCH v6 22/33] mm, slub: discard slabs in unfreeze_partials() without irqs disabled

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

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

diff --git a/mm/slub.c b/mm/slub.c
index 1c4bd45d66a1..0a1e048d0db7 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -2406,6 +2406,8 @@ 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;
@@ -2415,7 +2417,6 @@ static void unfreeze_partials(struct kmem_cache *s,
 		stat(s, FREE_SLAB);
 	}
 
-	local_irq_restore(flags);
 #endif	/* CONFIG_SLUB_CPU_PARTIAL */
 }
 
-- 
2.33.0