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From: Heiko Carstens <heiko.carstens@de.ibm.com>
To: Michal Hocko <mhocko@kernel.org>
Cc: linux-mm@kvack.org, Vlastimil Babka <vbabka@suse.cz>,
	Johannes Weiner <hannes@cmpxchg.org>,
	Mel Gorman <mgorman@suse.de>,
	Andrew Morton <akpm@linux-foundation.org>,
	LKML <linux-kernel@vger.kernel.org>,
	Michal Hocko <mhocko@suse.com>
Subject: Re: [PATCH 1/4] s390: get rid of superfluous __GFP_REPEAT
Date: Wed, 8 Mar 2017 09:23:40 +0100	[thread overview]
Message-ID: <20170308082340.GB12158@osiris> (raw)
In-Reply-To: <20170307154843.32516-2-mhocko@kernel.org>

On Tue, Mar 07, 2017 at 04:48:40PM +0100, Michal Hocko wrote:
> 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.
> 
> page_table_alloc then uses the flag for a single page allocation. This
> means that this flag has never been actually useful here because it has
> always been used only for PAGE_ALLOC_COSTLY requests.
> 
> An earlier attempt to remove the flag 10d58bf297e2 ("s390: get rid of
> superfluous __GFP_REPEAT") has missed this one but the situation is very
> same here.
> 
> Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
> Signed-off-by: Michal Hocko <mhocko@suse.com>
> ---
>  arch/s390/mm/pgalloc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

FWIW:
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>

If you want, this can be routed via the s390 tree, whatever you prefer.

WARNING: multiple messages have this Message-ID (diff)
From: Heiko Carstens <heiko.carstens@de.ibm.com>
To: Michal Hocko <mhocko@kernel.org>
Cc: linux-mm@kvack.org, Vlastimil Babka <vbabka@suse.cz>,
	Johannes Weiner <hannes@cmpxchg.org>,
	Mel Gorman <mgorman@suse.de>,
	Andrew Morton <akpm@linux-foundation.org>,
	LKML <linux-kernel@vger.kernel.org>,
	Michal Hocko <mhocko@suse.com>
Subject: Re: [PATCH 1/4] s390: get rid of superfluous __GFP_REPEAT
Date: Wed, 8 Mar 2017 09:23:40 +0100	[thread overview]
Message-ID: <20170308082340.GB12158@osiris> (raw)
In-Reply-To: <20170307154843.32516-2-mhocko@kernel.org>

On Tue, Mar 07, 2017 at 04:48:40PM +0100, Michal Hocko wrote:
> 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.
> 
> page_table_alloc then uses the flag for a single page allocation. This
> means that this flag has never been actually useful here because it has
> always been used only for PAGE_ALLOC_COSTLY requests.
> 
> An earlier attempt to remove the flag 10d58bf297e2 ("s390: get rid of
> superfluous __GFP_REPEAT") has missed this one but the situation is very
> same here.
> 
> Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
> Signed-off-by: Michal Hocko <mhocko@suse.com>
> ---
>  arch/s390/mm/pgalloc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

FWIW:
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>

If you want, this can be routed via the s390 tree, whatever you prefer.

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  reply	other threads:[~2017-03-08 10:00 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-03-07 15:48 [RFC PATCH 0/4 v2] mm: give __GFP_REPEAT a better semantic Michal Hocko
2017-03-07 15:48 ` Michal Hocko
2017-03-07 15:48 ` [PATCH 1/4] s390: get rid of superfluous __GFP_REPEAT Michal Hocko
2017-03-07 15:48   ` Michal Hocko
2017-03-08  8:23   ` Heiko Carstens [this message]
2017-03-08  8:23     ` Heiko Carstens
2017-03-08 14:11     ` Michal Hocko
2017-03-08 14:11       ` Michal Hocko
2017-03-09  8:27       ` Heiko Carstens
2017-03-09  8:27         ` Heiko Carstens
2017-03-07 15:48 ` [RFC PATCH 2/4] mm, tree wide: replace __GFP_REPEAT by __GFP_RETRY_MAYFAIL with more useful semantic Michal Hocko
2017-03-07 15:48   ` Michal Hocko
2017-05-25  1:21   ` NeilBrown
2017-05-31 11:42     ` Michal Hocko
2017-05-31 11:42       ` Michal Hocko
2017-06-03  2:24   ` Wei Yang
2017-06-05  6:43     ` Michal Hocko
2017-06-05  6:43       ` Michal Hocko
2017-06-06  3:04       ` Wei Yang
2017-06-06 12:03         ` Michal Hocko
2017-06-06 12:03           ` Michal Hocko
2017-06-07  2:10           ` Wei Yang
2017-06-09  7:32             ` Michal Hocko
2017-06-09  7:32               ` Michal Hocko
2017-03-07 15:48 ` [RFC PATCH 3/4] xfs: map KM_MAYFAIL to __GFP_RETRY_MAYFAIL Michal Hocko
2017-03-07 15:48   ` Michal Hocko
2017-03-07 17:05   ` Darrick J. Wong
2017-03-07 17:05     ` Darrick J. Wong
2017-03-08  9:35     ` Michal Hocko
2017-03-08  9:35       ` Michal Hocko
2017-03-08 11:23   ` Tetsuo Handa
2017-03-08 11:23     ` Tetsuo Handa
2017-03-08 12:54     ` Michal Hocko
2017-03-08 12:54       ` Michal Hocko
2017-03-08 15:06   ` Christoph Hellwig
2017-03-08 15:06     ` Christoph Hellwig
2017-03-09  9:16     ` Michal Hocko
2017-03-09  9:16       ` Michal Hocko
2017-03-07 15:48 ` [RFC PATCH 4/4] mm: kvmalloc support __GFP_RETRY_MAYFAIL for all sizes Michal Hocko
2017-03-07 15:48   ` Michal Hocko
2017-05-16  9:10 ` [RFC PATCH 0/4 v2] mm: give __GFP_REPEAT a better semantic Michal Hocko
2017-05-16  9:10   ` Michal Hocko
2017-05-23  8:12   ` Vlastimil Babka
2017-05-23  8:12     ` Vlastimil Babka
2017-05-24  1:06     ` NeilBrown
2017-05-24  7:34       ` Michal Hocko
2017-05-24  7:34         ` Michal Hocko

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