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Groups > linux.kernel > #1408926

[PATCH 14/17] sh: get rid of superfluous __GFP_REPEAT

From Michal Hocko <mhocko@kernel.org>
Newsgroups linux.kernel
Subject [PATCH 14/17] sh: get rid of superfluous __GFP_REPEAT
Date 2016-05-30 11:20 +0200
Message-ID <rErwD-2fk-45@gated-at.bofh.it> (permalink)
References <rErwC-2fk-9@gated-at.bofh.it>
Organization linux.* mail to news gateway

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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 {pgd,pmd}_alloc allocate from
{pgd,pmd}_cache but both caches are allocating up 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: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: linux-arch@vger.kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
---
 arch/sh/mm/pgtable.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/sh/mm/pgtable.c b/arch/sh/mm/pgtable.c
index 26e03a1f7ca4..a62bd8696779 100644
--- a/arch/sh/mm/pgtable.c
+++ b/arch/sh/mm/pgtable.c
@@ -1,7 +1,7 @@
 #include <linux/mm.h>
 #include <linux/slab.h>
 
-#define PGALLOC_GFP GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO
+#define PGALLOC_GFP GFP_KERNEL | __GFP_ZERO
 
 static struct kmem_cache *pgd_cachep;
 #if PAGETABLE_LEVELS > 2
-- 
2.8.1

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Thread

[PATCH 0/19] get rid of superfluous __GFP_REPEAT Michal Hocko <mhocko@kernel.org> - 2016-05-30 11:20 +0200
  [PATCH 12/17] sparc: get rid of superfluous __GFP_REPEAT Michal Hocko <mhocko@kernel.org> - 2016-05-30 11:20 +0200
    Re: [PATCH 12/17] sparc: get rid of superfluous __GFP_REPEAT David Miller <davem@davemloft.net> - 2016-05-30 20:30 +0200
  [PATCH 14/17] sh: get rid of superfluous __GFP_REPEAT Michal Hocko <mhocko@kernel.org> - 2016-05-30 11:20 +0200
  [PATCH 17/17] jbd2: get rid of superfluous __GFP_REPEAT Michal Hocko <mhocko@kernel.org> - 2016-05-30 11:20 +0200
    Re: [PATCH 17/17] jbd2: get rid of superfluous __GFP_REPEAT Jan Kara <jack@suse.cz> - 2016-05-30 15:10 +0200
  [PATCH 07/17] mips: get rid of superfluous __GFP_REPEAT Michal Hocko <mhocko@kernel.org> - 2016-05-30 11:20 +0200
  [PATCH 10/17] score: get rid of superfluous __GFP_REPEAT Michal Hocko <mhocko@kernel.org> - 2016-05-30 11:20 +0200
  [PATCH 01/17] tree wide: get rid of __GFP_REPEAT for order-0 allocations part I Michal Hocko <mhocko@kernel.org> - 2016-05-30 11:20 +0200
  [PATCH 06/17] arc: get rid of superfluous __GFP_REPEAT Michal Hocko <mhocko@kernel.org> - 2016-05-30 11:20 +0200

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