The patch titled
Subject: x86: get rid of superfluous __GFP_REPEAT
has been added to the -mm tree. Its filename is
x86-get-rid-of-superfluous-__gfp_repeat.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/x86-get-rid-of-superfluous-__gfp_repeat.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/x86-get-rid-of-superfluous-__gfp_repeat.patch
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------------------------------------------------------
From: Michal Hocko <mhocko@xxxxxxxx>
Subject: x86: get rid of superfluous __GFP_REPEAT
__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.
Link: http://lkml.kernel.org/r/1464599699-30131-3-git-send-email-mhocko@xxxxxxxxxx
Signed-off-by: Michal Hocko <mhocko@xxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/kernel/espfix_64.c | 2 +-
arch/x86/mm/pgtable.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff -puN arch/x86/kernel/espfix_64.c~x86-get-rid-of-superfluous-__gfp_repeat arch/x86/kernel/espfix_64.c
--- a/arch/x86/kernel/espfix_64.c~x86-get-rid-of-superfluous-__gfp_repeat
+++ a/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 -puN arch/x86/mm/pgtable.c~x86-get-rid-of-superfluous-__gfp_repeat arch/x86/mm/pgtable.c
--- a/arch/x86/mm/pgtable.c~x86-get-rid-of-superfluous-__gfp_repeat
+++ a/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
_
Patches currently in -mm which might be from mhocko@xxxxxxxx are
mm-oom_reaper-do-not-use-siglock-in-try_oom_reaper.patch
tree-wide-get-rid-of-__gfp_repeat-for-order-0-allocations-part-i.patch
x86-get-rid-of-superfluous-__gfp_repeat.patch
x86-efi-get-rid-of-superfluous-__gfp_repeat.patch
arm-get-rid-of-superfluous-__gfp_repeat.patch
arm64-get-rid-of-superfluous-__gfp_repeat.patch
arc-get-rid-of-superfluous-__gfp_repeat.patch
mips-get-rid-of-superfluous-__gfp_repeat.patch
nios2-get-rid-of-superfluous-__gfp_repeat.patch
parisc-get-rid-of-superfluous-__gfp_repeat.patch
score-get-rid-of-superfluous-__gfp_repeat.patch
powerpc-get-rid-of-superfluous-__gfp_repeat.patch
sparc-get-rid-of-superfluous-__gfp_repeat.patch
s390-get-rid-of-superfluous-__gfp_repeat.patch
sh-get-rid-of-superfluous-__gfp_repeat.patch
tile-get-rid-of-superfluous-__gfp_repeat.patch
unicore32-get-rid-of-superfluous-__gfp_repeat.patch
jbd2-get-rid-of-superfluous-__gfp_repeat.patch
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