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From: Eric Dumazet <eric.dumazet@gmail.com>
To: David Rientjes <rientjes@google.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Linux 4.9-rc6
Date: Mon, 21 Nov 2016 08:49:31 -0800	[thread overview]
Message-ID: <1479746971.8455.416.camel@edumazet-glaptop3.roam.corp.google.com> (raw)
In-Reply-To: <1479736297.8455.405.camel@edumazet-glaptop3.roam.corp.google.com>

On Mon, 2016-11-21 at 05:51 -0800, Eric Dumazet wrote:

> +		while (chunk_order) {
> +			if (node == NUMA_NO_NODE)
> +				page = alloc_pages(multi_alloc_mask, chunk_order);
> +			else
> +				page = alloc_pages_node(node, multi_alloc_mask, chunk_order);
> +			if (page) {
> +				split_page(page, chunk_order);
> +				break;
> +			}
> +			chunk_order--;
> +		}


We also could remember the page order with set_page_private() and
speedup show_numa_info()

I wonder if we could avoid the split_page() and speedup vfree().

  reply	other threads:[~2016-11-21 16:49 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-11-20 22:05 Linus Torvalds
2016-11-20 22:27 ` Eric Dumazet
2016-11-20 23:27   ` Linus Torvalds
2016-11-21  1:35     ` Al Viro
2016-11-21  4:59       ` Eric Dumazet
2016-11-21  8:34         ` David Rientjes
2016-11-21 13:32           ` Eric Dumazet
2016-11-21 13:51             ` Eric Dumazet
2016-11-21 16:49               ` Eric Dumazet [this message]
2016-12-04 10:43               ` Thorsten Leemhuis
     [not found]                 ` <CA+55aFzPiZW4FfWbvM-+AFraa0fkUHv4C1Y9SCzHdXEcUSPqdg@mail.gmail.com>
2016-12-04 17:17                   ` Eric Dumazet
2016-12-21 15:30                     ` Eric Dumazet

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