From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9D07DC43381 for ; Wed, 20 Mar 2019 10:54:28 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0FFE22175B for ; Wed, 20 Mar 2019 10:54:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=c-s.fr header.i=@c-s.fr header.b="wBCCXFLl" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0FFE22175B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=c-s.fr Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 44PRcw6NVdzDq8W for ; Wed, 20 Mar 2019 21:54:24 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=c-s.fr (client-ip=93.17.236.30; helo=pegase1.c-s.fr; envelope-from=christophe.leroy@c-s.fr; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=c-s.fr Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=c-s.fr header.i=@c-s.fr header.b="wBCCXFLl"; dkim-atps=neutral Received: from pegase1.c-s.fr (pegase1.c-s.fr [93.17.236.30]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 44PQZM4ffszDqBH for ; Wed, 20 Mar 2019 21:07:07 +1100 (AEDT) Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 44PQZH2WJrz9vC0F; Wed, 20 Mar 2019 11:07:03 +0100 (CET) Authentication-Results: localhost; dkim=pass reason="1024-bit key; insecure key" header.d=c-s.fr header.i=@c-s.fr header.b=wBCCXFLl; dkim-adsp=pass; dkim-atps=neutral X-Virus-Scanned: Debian amavisd-new at c-s.fr Received: from pegase1.c-s.fr ([192.168.12.234]) by localhost (pegase1.c-s.fr [192.168.12.234]) (amavisd-new, port 10024) with ESMTP id Qc30ovKrnmWj; Wed, 20 Mar 2019 11:07:03 +0100 (CET) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase1.c-s.fr (Postfix) with ESMTP id 44PQZH1Mjtz9vByx; Wed, 20 Mar 2019 11:07:03 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=c-s.fr; s=mail; t=1553076423; bh=CdZAWtK1Toi2PIHVI6vPbGzH/nxkdPNYtkmYkbl6Eek=; h=In-Reply-To:References:From:Subject:To:Cc:Date:From; b=wBCCXFLl8+LLINJAcT6HLC9Ob0NbFJOPG0MDHrkuU2O0ItJXcHLrLcoJdTMjLN+SJ G5SFQqNtZV/2YhKBIIVn1tblcwUWYjpNh4R7XNmrZZ4e0jpYe3O8/joQHPZ1k5fkT6 MG+CdDLcBabThEMeBZAANsdrp90c8c5gvuA/5oEE= Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 4FBDE8B918; Wed, 20 Mar 2019 11:07:04 +0100 (CET) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id RyJ_qZ2MplYv; Wed, 20 Mar 2019 11:07:04 +0100 (CET) Received: from po16846vm.idsi0.si.c-s.fr (unknown [172.25.231.2]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 2AFD38B911; Wed, 20 Mar 2019 11:07:04 +0100 (CET) Received: by po16846vm.idsi0.si.c-s.fr (Postfix, from userid 0) id E7E5163AEF; Wed, 20 Mar 2019 10:07:03 +0000 (UTC) Message-Id: In-Reply-To: References: From: Christophe Leroy Subject: [PATCH v1 27/27] powerpc/mm: flatten function __find_linux_pte() step 3 To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , aneesh.kumar@linux.ibm.com Date: Wed, 20 Mar 2019 10:07:03 +0000 (UTC) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" __find_linux_pte() is full of if/else which is hard to follow allthough the handling is pretty simple. Previous patches left a { } block. This patch removes it. Signed-off-by: Christophe Leroy --- arch/powerpc/mm/pgtable.c | 98 +++++++++++++++++++++++------------------------ 1 file changed, 49 insertions(+), 49 deletions(-) diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c index c1c6d0b79baa..db4a6253df92 100644 --- a/arch/powerpc/mm/pgtable.c +++ b/arch/powerpc/mm/pgtable.c @@ -348,59 +348,59 @@ pte_t *__find_linux_pte(pgd_t *pgdir, unsigned long ea, hpdp = (hugepd_t *)&pgd; goto out_huge; } - { - /* - * Even if we end up with an unmap, the pgtable will not - * be freed, because we do an rcu free and here we are - * irq disabled - */ - pdshift = PUD_SHIFT; - pudp = pud_offset(&pgd, ea); - pud = READ_ONCE(*pudp); - if (pud_none(pud)) - return NULL; + /* + * Even if we end up with an unmap, the pgtable will not + * be freed, because we do an rcu free and here we are + * irq disabled + */ + pdshift = PUD_SHIFT; + pudp = pud_offset(&pgd, ea); + pud = READ_ONCE(*pudp); - if (pud_huge(pud)) { - ret_pte = (pte_t *) pudp; - goto out; - } - if (is_hugepd(__hugepd(pud_val(pud)))) { - hpdp = (hugepd_t *)&pud; - goto out_huge; - } - pdshift = PMD_SHIFT; - pmdp = pmd_offset(&pud, ea); - pmd = READ_ONCE(*pmdp); - /* - * A hugepage collapse is captured by pmd_none, because - * it mark the pmd none and do a hpte invalidate. - */ - if (pmd_none(pmd)) - return NULL; - - if (pmd_trans_huge(pmd) || pmd_devmap(pmd)) { - if (is_thp) - *is_thp = true; - ret_pte = (pte_t *)pmdp; - goto out; - } - /* - * pmd_large check below will handle the swap pmd pte - * we need to do both the check because they are config - * dependent. - */ - if (pmd_huge(pmd) || pmd_large(pmd)) { - ret_pte = (pte_t *)pmdp; - goto out; - } - if (is_hugepd(__hugepd(pmd_val(pmd)))) { - hpdp = (hugepd_t *)&pmd; - goto out_huge; - } + if (pud_none(pud)) + return NULL; - return pte_offset_kernel(&pmd, ea); + if (pud_huge(pud)) { + ret_pte = (pte_t *)pudp; + goto out; } + if (is_hugepd(__hugepd(pud_val(pud)))) { + hpdp = (hugepd_t *)&pud; + goto out_huge; + } + pdshift = PMD_SHIFT; + pmdp = pmd_offset(&pud, ea); + pmd = READ_ONCE(*pmdp); + /* + * A hugepage collapse is captured by pmd_none, because + * it mark the pmd none and do a hpte invalidate. + */ + if (pmd_none(pmd)) + return NULL; + + if (pmd_trans_huge(pmd) || pmd_devmap(pmd)) { + if (is_thp) + *is_thp = true; + ret_pte = (pte_t *)pmdp; + goto out; + } + /* + * pmd_large check below will handle the swap pmd pte + * we need to do both the check because they are config + * dependent. + */ + if (pmd_huge(pmd) || pmd_large(pmd)) { + ret_pte = (pte_t *)pmdp; + goto out; + } + if (is_hugepd(__hugepd(pmd_val(pmd)))) { + hpdp = (hugepd_t *)&pmd; + goto out_huge; + } + + return pte_offset_kernel(&pmd, ea); + out_huge: if (!hpdp) return NULL; -- 2.13.3