From: Michal Hocko <mhocko@kernel.org>
To: linux-mm@kvack.org
Cc: Andrew Morton <akpm@linux-foundation.org>,
LKML <linux-kernel@vger.kernel.org>,
Michal Hocko <mhocko@suse.com>, Guan Xuetao <gxt@mprc.pku.edu.cn>,
linux-arch@vger.kernel.org
Subject: [PATCH 16/19] unicore32: get rid of superfluous __GFP_REPEAT
Date: Mon, 11 Apr 2016 13:08:09 +0200 [thread overview]
Message-ID: <1460372892-8157-17-git-send-email-mhocko@kernel.org> (raw)
In-Reply-To: <1460372892-8157-1-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 it is only used in pte_alloc_one,
pte_alloc_one_kernel which does order-0 request. This means that this
flag has never been actually useful here because it has always been used
only for PAGE_ALLOC_COSTLY requests.
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: linux-arch@vger.kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
---
arch/unicore32/include/asm/pgalloc.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/unicore32/include/asm/pgalloc.h b/arch/unicore32/include/asm/pgalloc.h
index 2e02d1356fdf..26775793c204 100644
--- a/arch/unicore32/include/asm/pgalloc.h
+++ b/arch/unicore32/include/asm/pgalloc.h
@@ -28,7 +28,7 @@ extern void free_pgd_slow(struct mm_struct *mm, pgd_t *pgd);
#define pgd_alloc(mm) get_pgd_slow(mm)
#define pgd_free(mm, pgd) free_pgd_slow(mm, pgd)
-#define PGALLOC_GFP (GFP_KERNEL | __GFP_NOTRACK | __GFP_REPEAT | __GFP_ZERO)
+#define PGALLOC_GFP (GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO)
/*
* Allocate one PTE table.
--
2.8.0.rc3
--
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WARNING: multiple messages have this Message-ID (diff)
From: Michal Hocko <mhocko@kernel.org>
To: linux-mm@kvack.org
Cc: Andrew Morton <akpm@linux-foundation.org>,
LKML <linux-kernel@vger.kernel.org>,
Michal Hocko <mhocko@suse.com>, Guan Xuetao <gxt@mprc.pku.edu.cn>,
linux-arch@vger.kernel.org
Subject: [PATCH 16/19] unicore32: get rid of superfluous __GFP_REPEAT
Date: Mon, 11 Apr 2016 13:08:09 +0200 [thread overview]
Message-ID: <1460372892-8157-17-git-send-email-mhocko@kernel.org> (raw)
Message-ID: <20160411110809.-DSF-k31SS_1f9G2YdZ8gCln1kCNtICpFU9Y4zhNy28@z> (raw)
In-Reply-To: <1460372892-8157-1-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 it is only used in pte_alloc_one,
pte_alloc_one_kernel which does order-0 request. This means that this
flag has never been actually useful here because it has always been used
only for PAGE_ALLOC_COSTLY requests.
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: linux-arch@vger.kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
---
arch/unicore32/include/asm/pgalloc.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/unicore32/include/asm/pgalloc.h b/arch/unicore32/include/asm/pgalloc.h
index 2e02d1356fdf..26775793c204 100644
--- a/arch/unicore32/include/asm/pgalloc.h
+++ b/arch/unicore32/include/asm/pgalloc.h
@@ -28,7 +28,7 @@ extern void free_pgd_slow(struct mm_struct *mm, pgd_t *pgd);
#define pgd_alloc(mm) get_pgd_slow(mm)
#define pgd_free(mm, pgd) free_pgd_slow(mm, pgd)
-#define PGALLOC_GFP (GFP_KERNEL | __GFP_NOTRACK | __GFP_REPEAT | __GFP_ZERO)
+#define PGALLOC_GFP (GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO)
/*
* Allocate one PTE table.
--
2.8.0.rc3
next prev parent reply other threads:[~2016-04-11 11:08 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1460372892-8157-1-git-send-email-mhocko@kernel.org>
2016-04-11 11:07 ` [PATCH 01/19] tree wide: get rid of __GFP_REPEAT for order-0 allocations part I Michal Hocko
2016-04-11 11:07 ` Michal Hocko
2016-04-14 19:56 ` David Rientjes
2016-04-15 7:44 ` Michal Hocko
2016-04-15 7:44 ` Michal Hocko
2016-04-11 11:07 ` [PATCH 02/19] x86: get rid of superfluous __GFP_REPEAT Michal Hocko
2016-04-11 11:07 ` Michal Hocko
2016-04-11 11:07 ` [PATCH 03/19] x86/efi: " Michal Hocko
2016-04-11 11:07 ` Michal Hocko
2016-04-12 15:53 ` Matt Fleming
2016-04-12 15:53 ` Matt Fleming
2016-04-11 11:07 ` [PATCH 04/19] arm: " Michal Hocko
2016-04-11 11:07 ` Michal Hocko
2016-04-11 11:07 ` [PATCH 05/19] arm64: " Michal Hocko
2016-04-11 11:07 ` Michal Hocko
2016-04-11 15:49 ` Will Deacon
2016-04-11 11:07 ` [PATCH 06/19] arc: " Michal Hocko
2016-04-11 11:07 ` Michal Hocko
2016-04-11 14:23 ` Vineet Gupta
2016-04-11 11:08 ` [PATCH 07/19] mips: " Michal Hocko
2016-04-11 11:08 ` Michal Hocko
2016-04-11 11:08 ` [PATCH 08/19] nios2: " Michal Hocko
2016-04-11 11:08 ` Michal Hocko
2016-04-11 11:08 ` [PATCH 09/19] parisc: " Michal Hocko
2016-04-11 11:08 ` Michal Hocko
2016-04-11 11:08 ` [PATCH 10/19] score: " Michal Hocko
2016-04-11 11:08 ` Michal Hocko
2016-04-11 11:08 ` [PATCH 11/19] powerpc: " Michal Hocko
2016-04-11 11:08 ` Michal Hocko
2016-04-11 11:08 ` [PATCH 12/19] sparc: " Michal Hocko
2016-04-11 11:08 ` Michal Hocko
2016-04-11 11:08 ` [PATCH 13/19] s390: " Michal Hocko
2016-04-11 11:08 ` Michal Hocko
2016-04-11 11:28 ` Cornelia Huck
2016-04-11 11:28 ` Cornelia Huck
2016-04-11 12:47 ` Heiko Carstens
2016-04-11 12:47 ` Heiko Carstens
2016-04-11 11:08 ` [PATCH 14/19] sh: " Michal Hocko
2016-04-11 11:08 ` Michal Hocko
2016-04-11 11:08 ` [PATCH 15/19] tile: " Michal Hocko
2016-04-11 11:08 ` Michal Hocko
2016-04-11 11:08 ` Michal Hocko [this message]
2016-04-11 11:08 ` [PATCH 16/19] unicore32: " Michal Hocko
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