From: Vladimir Davydov <vdavydov@parallels.com>
To: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>
Cc: <benh@kernel.crashing.org>, <paulus@samba.org>,
<mpe@ellerman.id.au>, <anton@samba.org>,
<akpm@linux-foundation.org>, <nacc@linux.vnet.ibm.com>,
<gkurz@linux.vnet.ibm.com>, <grant.likely@linaro.org>,
<nikunj@linux.vnet.ibm.com>, <linuxppc-dev@lists.ozlabs.org>,
<linux-kernel@vger.kernel.org>, <linux-mm@kvack.org>
Subject: Re: [PATCH V2 1/2] mm: Replace nr_node_ids for loop with for_each_node in list lru
Date: Tue, 15 Sep 2015 10:59:24 +0300 [thread overview]
Message-ID: <20150915075924.GD16220@esperanza> (raw)
In-Reply-To: <1442282917-16893-2-git-send-email-raghavendra.kt@linux.vnet.ibm.com>
On Tue, Sep 15, 2015 at 07:38:36AM +0530, Raghavendra K T wrote:
> The functions used in the patch are in slowpath, which gets called
> whenever alloc_super is called during mounts.
>
> Though this should not make difference for the architectures with
> sequential numa node ids, for the powerpc which can potentially have
> sparse node ids (for e.g., 4 node system having numa ids, 0,1,16,17
> is common), this patch saves some unnecessary allocations for
> non existing numa nodes.
>
> Even without that saving, perhaps patch makes code more readable.
>
> [ Take memcg_aware check outside for_each loop: Vldimir]
> Signed-off-by: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>
Reviewed-by: Vladimir Davydov <vdavydov@parallels.com>
WARNING: multiple messages have this Message-ID (diff)
From: Vladimir Davydov <vdavydov@parallels.com>
To: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>
Cc: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au,
anton@samba.org, akpm@linux-foundation.org,
nacc@linux.vnet.ibm.com, gkurz@linux.vnet.ibm.com,
grant.likely@linaro.org, nikunj@linux.vnet.ibm.com,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org
Subject: Re: [PATCH V2 1/2] mm: Replace nr_node_ids for loop with for_each_node in list lru
Date: Tue, 15 Sep 2015 10:59:24 +0300 [thread overview]
Message-ID: <20150915075924.GD16220@esperanza> (raw)
In-Reply-To: <1442282917-16893-2-git-send-email-raghavendra.kt@linux.vnet.ibm.com>
On Tue, Sep 15, 2015 at 07:38:36AM +0530, Raghavendra K T wrote:
> The functions used in the patch are in slowpath, which gets called
> whenever alloc_super is called during mounts.
>
> Though this should not make difference for the architectures with
> sequential numa node ids, for the powerpc which can potentially have
> sparse node ids (for e.g., 4 node system having numa ids, 0,1,16,17
> is common), this patch saves some unnecessary allocations for
> non existing numa nodes.
>
> Even without that saving, perhaps patch makes code more readable.
>
> [ Take memcg_aware check outside for_each loop: Vldimir]
> Signed-off-by: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>
Reviewed-by: Vladimir Davydov <vdavydov@parallels.com>
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next prev parent reply other threads:[~2015-09-15 7:59 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-15 2:08 [PATCH V2 0/2] Replace nr_node_ids for loop with for_each_node Raghavendra K T
2015-09-15 2:08 ` Raghavendra K T
2015-09-15 2:08 ` [PATCH V2 1/2] mm: Replace nr_node_ids for loop with for_each_node in list lru Raghavendra K T
2015-09-15 2:08 ` Raghavendra K T
2015-09-15 2:08 ` Raghavendra K T
2015-09-15 2:17 ` Raghavendra K T
2015-09-15 2:17 ` Raghavendra K T
2015-09-15 2:17 ` Raghavendra K T
2015-09-15 7:59 ` Vladimir Davydov [this message]
2015-09-15 7:59 ` Vladimir Davydov
2015-09-15 2:08 ` [PATCH V2 2/2] powerpc:numa Do not allocate bootmem memory for non existing nodes Raghavendra K T
2015-09-15 2:08 ` Raghavendra K T
2015-09-15 2:08 ` Raghavendra K T
2015-09-22 5:29 ` Michael Ellerman
2015-09-22 5:29 ` Michael Ellerman
2015-09-22 10:48 ` Raghavendra K T
2015-09-22 10:48 ` Raghavendra K T
2015-09-22 19:36 ` Raghavendra K T
2015-09-22 19:36 ` Raghavendra K T
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