From: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
To: Oscar Salvador <osalvador@suse.de>
Cc: "akpm@linux-foundation.org" <akpm@linux-foundation.org>,
"mike.kravetz@oracle.com" <mike.kravetz@oracle.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] mm/hugetlb: Get rid of NODEMASK_ALLOC
Date: Wed, 3 Apr 2019 05:44:35 +0000 [thread overview]
Message-ID: <20190403054436.GA20228@hori.linux.bs1.fc.nec.co.jp> (raw)
In-Reply-To: <20190402133415.21983-1-osalvador@suse.de>
On Tue, Apr 02, 2019 at 03:34:15PM +0200, Oscar Salvador wrote:
> NODEMASK_ALLOC is used to allocate a nodemask bitmap, ant it does it by
> first determining whether it should be allocated in the stack or dinamically
> depending on NODES_SHIFT.
> Right now, it goes the dynamic path whenever the nodemask_t is above 32
> bytes.
>
> Although we could bump it to a reasonable value, the largest a nodemask_t
> can get is 128 bytes, so since __nr_hugepages_store_common is called from
> a rather shore stack we can just get rid of the NODEMASK_ALLOC call here.
>
> This reduces some code churn and complexity.
>
> Signed-off-by: Oscar Salvador <osalvador@suse.de>
nice cleanup.
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
next prev parent reply other threads:[~2019-04-03 5:46 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-02 13:34 [PATCH] mm/hugetlb: Get rid of NODEMASK_ALLOC Oscar Salvador
2019-04-02 18:37 ` Mike Kravetz
2019-04-02 20:01 ` Andrew Morton
2019-04-02 20:09 ` Mike Kravetz
2019-04-02 20:16 ` Oscar Salvador
2019-04-02 20:16 ` Oscar Salvador
2019-04-03 5:44 ` Naoya Horiguchi [this message]
2019-04-03 7:52 ` Baoquan He
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