From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-oi0-f70.google.com (mail-oi0-f70.google.com [209.85.218.70]) by kanga.kvack.org (Postfix) with ESMTP id 2051D8E0001 for ; Wed, 12 Sep 2018 06:26:04 -0400 (EDT) Received: by mail-oi0-f70.google.com with SMTP id w12-v6so1728467oie.12 for ; Wed, 12 Sep 2018 03:26:04 -0700 (PDT) Received: from foss.arm.com (usa-sjc-mx-foss1.foss.arm.com. [217.140.101.70]) by mx.google.com with ESMTP id b135-v6si452780oii.71.2018.09.12.03.26.02 for ; Wed, 12 Sep 2018 03:26:02 -0700 (PDT) From: Will Deacon Subject: [PATCH 2/5] arm64: mmu: Drop pXd_present() checks from pXd_free_pYd_table() Date: Wed, 12 Sep 2018 11:26:11 +0100 Message-Id: <1536747974-25875-3-git-send-email-will.deacon@arm.com> In-Reply-To: <1536747974-25875-1-git-send-email-will.deacon@arm.com> References: <1536747974-25875-1-git-send-email-will.deacon@arm.com> Sender: owner-linux-mm@kvack.org List-ID: To: linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: cpandya@codeaurora.org, toshi.kani@hpe.com, tglx@linutronix.de, mhocko@suse.com, akpm@linux-foundation.org, Will Deacon Now that the core code checks this for us, we don't need to do it in the backend. Cc: Chintan Pandya Cc: Toshi Kani Cc: Thomas Gleixner Cc: Michal Hocko Cc: Andrew Morton Signed-off-by: Will Deacon --- arch/arm64/mm/mmu.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c index 8080c9f489c3..0dcb3354d6dd 100644 --- a/arch/arm64/mm/mmu.c +++ b/arch/arm64/mm/mmu.c @@ -985,10 +985,8 @@ int pmd_free_pte_page(pmd_t *pmdp, unsigned long addr) pmd = READ_ONCE(*pmdp); - if (!pmd_present(pmd)) - return 1; if (!pmd_table(pmd)) { - VM_WARN_ON(!pmd_table(pmd)); + VM_WARN_ON(1); return 1; } @@ -1008,10 +1006,8 @@ int pud_free_pmd_page(pud_t *pudp, unsigned long addr) pud = READ_ONCE(*pudp); - if (!pud_present(pud)) - return 1; if (!pud_table(pud)) { - VM_WARN_ON(!pud_table(pud)); + VM_WARN_ON(1); return 1; } -- 2.1.4