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From: Miaohe Lin <linmiaohe@huawei.com>
To: <akpm@linux-foundation.org>
Cc: <linux-mm@kvack.org>, <linux-kernel@vger.kernel.org>,
	<linmiaohe@huawei.com>
Subject: [PATCH] z3fold: Simplify the zhdr initialization code in init_z3fold_page()
Date: Wed, 20 Jan 2021 03:58:51 -0500	[thread overview]
Message-ID: <20210120085851.16159-1-linmiaohe@huawei.com> (raw)

We can simplify the zhdr initialization by memset() the zhdr first instead
of set struct member to zero one by one. This would also make code more
compact and clear.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
---
 mm/z3fold.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/mm/z3fold.c b/mm/z3fold.c
index 8e53cdf4d190..c1ccf6bb0ffb 100644
--- a/mm/z3fold.c
+++ b/mm/z3fold.c
@@ -413,16 +413,10 @@ static struct z3fold_header *init_z3fold_page(struct page *page, bool headless,
 	if (!slots)
 		return NULL;
 
+	memset(zhdr, 0, sizeof(*zhdr));
 	spin_lock_init(&zhdr->page_lock);
 	kref_init(&zhdr->refcount);
-	zhdr->first_chunks = 0;
-	zhdr->middle_chunks = 0;
-	zhdr->last_chunks = 0;
-	zhdr->first_num = 0;
-	zhdr->start_middle = 0;
 	zhdr->cpu = -1;
-	zhdr->foreign_handles = 0;
-	zhdr->mapped_count = 0;
 	zhdr->slots = slots;
 	zhdr->pool = pool;
 	INIT_LIST_HEAD(&zhdr->buddy);
-- 
2.19.1


                 reply	other threads:[~2021-01-20  9:00 UTC|newest]

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