The patch titled
Subject: arm: get rid of superfluous __GFP_REPEAT
has been added to the -mm tree. Its filename is
arm-get-rid-of-superfluous-__gfp_repeat.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/arm-get-rid-of-superfluous-__gfp_repeat.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/arm-get-rid-of-superfluous-__gfp_repeat.patch
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------------------------------------------------------
From: Michal Hocko <mhocko@xxxxxxxx>
Subject: arm: 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-2. 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/1464599699-30131-5-git-send-email-mhocko@xxxxxxxxxx
Signed-off-by: Michal Hocko <mhocko@xxxxxxxx>
Cc: Russell King <linux@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/arm/include/asm/pgalloc.h | 2 +-
arch/arm/mm/pgd.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff -puN arch/arm/include/asm/pgalloc.h~arm-get-rid-of-superfluous-__gfp_repeat arch/arm/include/asm/pgalloc.h
--- a/arch/arm/include/asm/pgalloc.h~arm-get-rid-of-superfluous-__gfp_repeat
+++ a/arch/arm/include/asm/pgalloc.h
@@ -57,7 +57,7 @@ static inline void pud_populate(struct m
extern pgd_t *pgd_alloc(struct mm_struct *mm);
extern void pgd_free(struct mm_struct *mm, pgd_t *pgd);
-#define PGALLOC_GFP (GFP_KERNEL | __GFP_NOTRACK | __GFP_REPEAT | __GFP_ZERO)
+#define PGALLOC_GFP (GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO)
static inline void clean_pte_table(pte_t *pte)
{
diff -puN arch/arm/mm/pgd.c~arm-get-rid-of-superfluous-__gfp_repeat arch/arm/mm/pgd.c
--- a/arch/arm/mm/pgd.c~arm-get-rid-of-superfluous-__gfp_repeat
+++ a/arch/arm/mm/pgd.c
@@ -23,7 +23,7 @@
#define __pgd_alloc() kmalloc(PTRS_PER_PGD * sizeof(pgd_t), GFP_KERNEL)
#define __pgd_free(pgd) kfree(pgd)
#else
-#define __pgd_alloc() (pgd_t *)__get_free_pages(GFP_KERNEL | __GFP_REPEAT, 2)
+#define __pgd_alloc() (pgd_t *)__get_free_pages(GFP_KERNEL, 2)
#define __pgd_free(pgd) free_pages((unsigned long)pgd, 2)
#endif
_
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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