From: Michal Hocko <mhocko@kernel.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mm@kvack.org, LKML <linux-kernel@vger.kernel.org>,
Michal Hocko <mhocko@suse.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
Andy Lutomirski <luto@kernel.org>,
linux-arch@vger.kernel.org
Subject: [PATCH 02/17] x86: get rid of superfluous __GFP_REPEAT
Date: Mon, 30 May 2016 11:14:44 +0200 [thread overview]
Message-ID: <1464599699-30131-3-git-send-email-mhocko@kernel.org> (raw)
Message-ID: <20160530091444.OYlyDh5NWaNNbA4wQLwRTv3jnUVKikZuK2WwU4dcImI@z> (raw)
In-Reply-To: <1464599699-30131-1-git-send-email-mhocko@kernel.org>
From: Michal Hocko <mhocko@suse.com>
__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.
PGALLOC_GFP uses __GFP_REPEAT but none of the allocation which uses this
flag is for more than order-0. This means that this flag has never
been actually useful here because it has always been used only for
PAGE_ALLOC_COSTLY requests.
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: linux-arch@vger.kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
---
arch/x86/kernel/espfix_64.c | 2 +-
arch/x86/mm/pgtable.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kernel/espfix_64.c b/arch/x86/kernel/espfix_64.c
index 4d38416e2a7f..04f89caef9c4 100644
--- a/arch/x86/kernel/espfix_64.c
+++ b/arch/x86/kernel/espfix_64.c
@@ -57,7 +57,7 @@
# error "Need more than one PGD for the ESPFIX hack"
#endif
-#define PGALLOC_GFP (GFP_KERNEL | __GFP_NOTRACK | __GFP_REPEAT | __GFP_ZERO)
+#define PGALLOC_GFP (GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO)
/* This contains the *bottom* address of the espfix stack */
DEFINE_PER_CPU_READ_MOSTLY(unsigned long, espfix_stack);
diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c
index 4eb287e25043..aa0ff4b02a96 100644
--- a/arch/x86/mm/pgtable.c
+++ b/arch/x86/mm/pgtable.c
@@ -6,7 +6,7 @@
#include <asm/fixmap.h>
#include <asm/mtrr.h>
-#define PGALLOC_GFP GFP_KERNEL | __GFP_NOTRACK | __GFP_REPEAT | __GFP_ZERO
+#define PGALLOC_GFP GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO
#ifdef CONFIG_HIGHPTE
#define PGALLOC_USER_GFP __GFP_HIGHMEM
--
2.8.1
next prev parent reply other threads:[~2016-05-30 9:15 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1464599699-30131-1-git-send-email-mhocko@kernel.org>
2016-05-30 9:14 ` [PATCH 01/17] tree wide: get rid of __GFP_REPEAT for order-0 allocations part I Michal Hocko
2016-05-30 9:14 ` Michal Hocko
2016-05-30 9:14 ` Michal Hocko [this message]
2016-05-30 9:14 ` [PATCH 02/17] x86: get rid of superfluous __GFP_REPEAT Michal Hocko
2016-05-30 9:14 ` [PATCH 03/17] x86/efi: " Michal Hocko
2016-05-30 9:14 ` Michal Hocko
2016-05-30 9:14 ` [PATCH 04/17] arm: " Michal Hocko
2016-05-30 9:14 ` Michal Hocko
2016-06-01 16:24 ` Russell King - ARM Linux
2016-06-01 16:24 ` Russell King - ARM Linux
2016-06-02 6:32 ` Michal Hocko
2016-06-02 6:32 ` Michal Hocko
2016-07-20 20:59 ` Andrew Morton
2016-05-30 9:14 ` [PATCH 05/17] arm64: " Michal Hocko
2016-05-30 9:14 ` Michal Hocko
2016-05-30 9:14 ` [PATCH 06/17] arc: " Michal Hocko
2016-05-30 9:14 ` Michal Hocko
2016-05-30 9:14 ` [PATCH 07/17] mips: " Michal Hocko
2016-05-30 9:14 ` Michal Hocko
2016-05-30 9:14 ` [PATCH 08/17] nios2: " Michal Hocko
2016-05-30 9:14 ` Michal Hocko
2016-05-30 9:14 ` [PATCH 09/17] parisc: " Michal Hocko
2016-05-30 9:14 ` Michal Hocko
2016-05-30 9:14 ` [PATCH 10/17] score: " Michal Hocko
2016-05-30 9:14 ` Michal Hocko
2016-05-30 9:14 ` [PATCH 11/17] powerpc: " Michal Hocko
2016-05-30 9:14 ` Michal Hocko
2016-05-30 9:14 ` [PATCH 12/17] sparc: " Michal Hocko
2016-05-30 9:14 ` Michal Hocko
2016-05-30 18:23 ` David Miller
2016-05-30 18:23 ` David Miller
2016-05-30 9:14 ` [PATCH 13/17] s390: " Michal Hocko
2016-05-30 9:14 ` Michal Hocko
2016-05-30 9:14 ` [PATCH 14/17] sh: " Michal Hocko
2016-05-30 9:14 ` Michal Hocko
2016-05-30 9:14 ` [PATCH 15/17] tile: " Michal Hocko
2016-05-30 9:14 ` Michal Hocko
2016-05-30 9:14 ` [PATCH 16/17] unicore32: " Michal Hocko
2016-05-30 9:14 ` Michal Hocko
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