linux-kernel - [PATCH 1/3] mm/percpu.c: remove redundant check

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Message-Id: <20230721131800.20003-2-bhe@redhat.com>
Date:   Fri, 21 Jul 2023 21:17:58 +0800
From:   Baoquan He <bhe@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     linux-mm@...ck.org, akpm@...ux-foundation.org, dennis@...nel.org,
        tj@...nel.org, cl@...ux.com, mawupeng1@...wei.com,
        Baoquan He <bhe@...hat.com>
Subject: [PATCH 1/3] mm/percpu.c: remove redundant check

The conditional check "(ai->dyn_size < PERCPU_DYNAMIC_EARLY_SIZE) has
covered the check '(!ai->dyn_size)'.

Signed-off-by: Baoquan He <bhe@...hat.com>
---
 mm/percpu.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/mm/percpu.c b/mm/percpu.c
index 28e07ede46f6..1480bf283d11 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -2615,7 +2615,6 @@ void __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai,
 	PCPU_SETUP_BUG_ON(ai->unit_size < PCPU_MIN_UNIT_SIZE);
 	PCPU_SETUP_BUG_ON(!IS_ALIGNED(ai->unit_size, PCPU_BITMAP_BLOCK_SIZE));
 	PCPU_SETUP_BUG_ON(ai->dyn_size < PERCPU_DYNAMIC_EARLY_SIZE);
-	PCPU_SETUP_BUG_ON(!ai->dyn_size);
 	PCPU_SETUP_BUG_ON(!IS_ALIGNED(ai->reserved_size, PCPU_MIN_ALLOC_SIZE));
 	PCPU_SETUP_BUG_ON(!(IS_ALIGNED(PCPU_BITMAP_BLOCK_SIZE, PAGE_SIZE) ||
 			    IS_ALIGNED(PAGE_SIZE, PCPU_BITMAP_BLOCK_SIZE)));
-- 
2.34.1