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>, "David S. Miller" <davem@davemloft.net>, linux-arch@vger.kernel.org Subject: [PATCH 12/19] sparc: get rid of superfluous __GFP_REPEAT Date: Mon, 11 Apr 2016 13:08:05 +0200 [thread overview] Message-ID: <1460372892-8157-13-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. {pud,pmd}_alloc_one is using __GFP_REPEAT but it always allocates from pgtable_cache which is initialzed 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: "David S. Miller" <davem@davemloft.net> Cc: linux-arch@vger.kernel.org Signed-off-by: Michal Hocko <mhocko@suse.com> --- arch/sparc/include/asm/pgalloc_64.h | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/arch/sparc/include/asm/pgalloc_64.h b/arch/sparc/include/asm/pgalloc_64.h index 5e3187185b4a..3529f1378cd8 100644 --- a/arch/sparc/include/asm/pgalloc_64.h +++ b/arch/sparc/include/asm/pgalloc_64.h @@ -41,8 +41,7 @@ static inline void __pud_populate(pud_t *pud, pmd_t *pmd) static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) { - return kmem_cache_alloc(pgtable_cache, - GFP_KERNEL|__GFP_REPEAT); + return kmem_cache_alloc(pgtable_cache, GFP_KERNEL); } static inline void pud_free(struct mm_struct *mm, pud_t *pud) @@ -52,8 +51,7 @@ static inline void pud_free(struct mm_struct *mm, pud_t *pud) static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) { - return kmem_cache_alloc(pgtable_cache, - GFP_KERNEL|__GFP_REPEAT); + return kmem_cache_alloc(pgtable_cache, GFP_KERNEL); } static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) -- 2.8.0.rc3 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
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>, "David S. Miller" <davem@davemloft.net>, linux-arch@vger.kernel.org Subject: [PATCH 12/19] sparc: get rid of superfluous __GFP_REPEAT Date: Mon, 11 Apr 2016 13:08:05 +0200 [thread overview] Message-ID: <1460372892-8157-13-git-send-email-mhocko@kernel.org> (raw) Message-ID: <20160411110805.fUMYStLUqTjrrpuG78VPEWGlJ9ZxruofL2pcdmDNClw@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. {pud,pmd}_alloc_one is using __GFP_REPEAT but it always allocates from pgtable_cache which is initialzed 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: "David S. Miller" <davem@davemloft.net> Cc: linux-arch@vger.kernel.org Signed-off-by: Michal Hocko <mhocko@suse.com> --- arch/sparc/include/asm/pgalloc_64.h | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/arch/sparc/include/asm/pgalloc_64.h b/arch/sparc/include/asm/pgalloc_64.h index 5e3187185b4a..3529f1378cd8 100644 --- a/arch/sparc/include/asm/pgalloc_64.h +++ b/arch/sparc/include/asm/pgalloc_64.h @@ -41,8 +41,7 @@ static inline void __pud_populate(pud_t *pud, pmd_t *pmd) static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) { - return kmem_cache_alloc(pgtable_cache, - GFP_KERNEL|__GFP_REPEAT); + return kmem_cache_alloc(pgtable_cache, GFP_KERNEL); } static inline void pud_free(struct mm_struct *mm, pud_t *pud) @@ -52,8 +51,7 @@ static inline void pud_free(struct mm_struct *mm, pud_t *pud) static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) { - return kmem_cache_alloc(pgtable_cache, - GFP_KERNEL|__GFP_REPEAT); + return kmem_cache_alloc(pgtable_cache, GFP_KERNEL); } static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) -- 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 ` Michal Hocko [this message] 2016-04-11 11:08 ` [PATCH 12/19] sparc: " 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 ` [PATCH 16/19] unicore32: " Michal Hocko 2016-04-11 11:08 ` Michal Hocko
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