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Date: Fri, 15 Jun 2018 00:30:35 -0700
From: Christoph Hellwig <hch@infradead.org>
To: Jens Axboe <axboe@kernel.dk>
Cc: Hannes Reinecke <hare@suse.de>, linux-block@vger.kernel.org,
	Mel Gorman <mgorman@suse.com>, Hannes Reinecke <hare@suse.com>
Subject: Re: [PATCH] brd: Allow ramdisk to be allocated on selected NUMA node
Message-ID: <20180615073035.GA15535@infradead.org>
References: <20180614133832.110947-1-hare@suse.de>
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 <20180614172954.79965d13@pentland.suse.de>
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On Thu, Jun 14, 2018 at 09:33:35AM -0600, Jens Axboe wrote:
> Next question - what does the memory allocator do if we run out of
> memory on the given node? Should we punt to a different node if that
> happens? Slower, but functional, seems preferable to not being able
> to get memory.

When using alloc_pages_node the passed in node id is just a hint, the
allocator will use all avaiable memory if nedeed.