From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752919AbcD1NY3 (ORCPT ); Thu, 28 Apr 2016 09:24:29 -0400 Received: from mail-wm0-f48.google.com ([74.125.82.48]:37763 "EHLO mail-wm0-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752832AbcD1NYX (ORCPT ); Thu, 28 Apr 2016 09:24:23 -0400 From: Michal Hocko To: Andrew Morton Cc: , LKML , Michal Hocko , "David S. Miller" , linux-arch@vger.kernel.org Subject: [PATCH 12/20] sparc: get rid of superfluous __GFP_REPEAT Date: Thu, 28 Apr 2016 15:23:58 +0200 Message-Id: <1461849846-27209-13-git-send-email-mhocko@kernel.org> X-Mailer: git-send-email 2.8.0.rc3 In-Reply-To: <1461849846-27209-1-git-send-email-mhocko@kernel.org> References: <1461849846-27209-1-git-send-email-mhocko@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Michal Hocko __GFP_REPEAT has a rather weak semantic but since it has been introduced around 2.6.12 it has been ignored for low order allocations. {pud,pmd}_alloc_one is using __GFP_REPEAT but it always allocates from pgtable_cache which is initialzed to PAGE_SIZE objects. This means that this flag has never been actually useful here because it has always been used only for PAGE_ALLOC_COSTLY requests. Cc: "David S. Miller" Cc: linux-arch@vger.kernel.org Signed-off-by: Michal Hocko --- arch/sparc/include/asm/pgalloc_64.h | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/arch/sparc/include/asm/pgalloc_64.h b/arch/sparc/include/asm/pgalloc_64.h index 5e3187185b4a..3529f1378cd8 100644 --- a/arch/sparc/include/asm/pgalloc_64.h +++ b/arch/sparc/include/asm/pgalloc_64.h @@ -41,8 +41,7 @@ static inline void __pud_populate(pud_t *pud, pmd_t *pmd) static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) { - return kmem_cache_alloc(pgtable_cache, - GFP_KERNEL|__GFP_REPEAT); + return kmem_cache_alloc(pgtable_cache, GFP_KERNEL); } static inline void pud_free(struct mm_struct *mm, pud_t *pud) @@ -52,8 +51,7 @@ static inline void pud_free(struct mm_struct *mm, pud_t *pud) static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) { - return kmem_cache_alloc(pgtable_cache, - GFP_KERNEL|__GFP_REPEAT); + return kmem_cache_alloc(pgtable_cache, GFP_KERNEL); } static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) -- 2.8.0.rc3 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michal Hocko Subject: [PATCH 12/20] sparc: get rid of superfluous __GFP_REPEAT Date: Thu, 28 Apr 2016 15:23:58 +0200 Message-ID: <1461849846-27209-13-git-send-email-mhocko@kernel.org> References: <1461849846-27209-1-git-send-email-mhocko@kernel.org> Return-path: In-Reply-To: <1461849846-27209-1-git-send-email-mhocko@kernel.org> Sender: linux-kernel-owner@vger.kernel.org To: Andrew Morton Cc: linux-mm@kvack.org, LKML , Michal Hocko , "David S. Miller" , linux-arch@vger.kernel.org List-Id: linux-arch.vger.kernel.org From: Michal Hocko __GFP_REPEAT has a rather weak semantic but since it has been introduced around 2.6.12 it has been ignored for low order allocations. {pud,pmd}_alloc_one is using __GFP_REPEAT but it always allocates from pgtable_cache which is initialzed to PAGE_SIZE objects. This means that this flag has never been actually useful here because it has always been used only for PAGE_ALLOC_COSTLY requests. Cc: "David S. Miller" Cc: linux-arch@vger.kernel.org Signed-off-by: Michal Hocko --- arch/sparc/include/asm/pgalloc_64.h | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/arch/sparc/include/asm/pgalloc_64.h b/arch/sparc/include/asm/pgalloc_64.h index 5e3187185b4a..3529f1378cd8 100644 --- a/arch/sparc/include/asm/pgalloc_64.h +++ b/arch/sparc/include/asm/pgalloc_64.h @@ -41,8 +41,7 @@ static inline void __pud_populate(pud_t *pud, pmd_t *pmd) static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) { - return kmem_cache_alloc(pgtable_cache, - GFP_KERNEL|__GFP_REPEAT); + return kmem_cache_alloc(pgtable_cache, GFP_KERNEL); } static inline void pud_free(struct mm_struct *mm, pud_t *pud) @@ -52,8 +51,7 @@ static inline void pud_free(struct mm_struct *mm, pud_t *pud) static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) { - return kmem_cache_alloc(pgtable_cache, - GFP_KERNEL|__GFP_REPEAT); + return kmem_cache_alloc(pgtable_cache, GFP_KERNEL); } static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) -- 2.8.0.rc3 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lf0-f69.google.com (mail-lf0-f69.google.com [209.85.215.69]) by kanga.kvack.org (Postfix) with ESMTP id 122956B026E for ; Thu, 28 Apr 2016 09:24:40 -0400 (EDT) Received: by mail-lf0-f69.google.com with SMTP id y84so65093706lfc.3 for ; Thu, 28 Apr 2016 06:24:40 -0700 (PDT) Received: from mail-wm0-f52.google.com (mail-wm0-f52.google.com. [74.125.82.52]) by mx.google.com with ESMTPS id op7si10885894wjc.120.2016.04.28.06.24.21 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 28 Apr 2016 06:24:21 -0700 (PDT) Received: by mail-wm0-f52.google.com with SMTP id e201so76635327wme.0 for ; Thu, 28 Apr 2016 06:24:21 -0700 (PDT) From: Michal Hocko Subject: [PATCH 12/20] sparc: get rid of superfluous __GFP_REPEAT Date: Thu, 28 Apr 2016 15:23:58 +0200 Message-Id: <1461849846-27209-13-git-send-email-mhocko@kernel.org> In-Reply-To: <1461849846-27209-1-git-send-email-mhocko@kernel.org> References: <1461849846-27209-1-git-send-email-mhocko@kernel.org> Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: linux-mm@kvack.org, LKML , Michal Hocko , "David S. Miller" , linux-arch@vger.kernel.org From: Michal Hocko __GFP_REPEAT has a rather weak semantic but since it has been introduced around 2.6.12 it has been ignored for low order allocations. {pud,pmd}_alloc_one is using __GFP_REPEAT but it always allocates from pgtable_cache which is initialzed to PAGE_SIZE objects. This means that this flag has never been actually useful here because it has always been used only for PAGE_ALLOC_COSTLY requests. Cc: "David S. Miller" Cc: linux-arch@vger.kernel.org Signed-off-by: Michal Hocko --- arch/sparc/include/asm/pgalloc_64.h | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/arch/sparc/include/asm/pgalloc_64.h b/arch/sparc/include/asm/pgalloc_64.h index 5e3187185b4a..3529f1378cd8 100644 --- a/arch/sparc/include/asm/pgalloc_64.h +++ b/arch/sparc/include/asm/pgalloc_64.h @@ -41,8 +41,7 @@ static inline void __pud_populate(pud_t *pud, pmd_t *pmd) static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) { - return kmem_cache_alloc(pgtable_cache, - GFP_KERNEL|__GFP_REPEAT); + return kmem_cache_alloc(pgtable_cache, GFP_KERNEL); } static inline void pud_free(struct mm_struct *mm, pud_t *pud) @@ -52,8 +51,7 @@ static inline void pud_free(struct mm_struct *mm, pud_t *pud) static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) { - return kmem_cache_alloc(pgtable_cache, - GFP_KERNEL|__GFP_REPEAT); + return kmem_cache_alloc(pgtable_cache, GFP_KERNEL); } static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) -- 2.8.0.rc3 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org