linux-kernel - Re: [PATCH] blk-mq: Avoid memoryless numa node encoded in hctx numa

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Date:	Thu, 3 Dec 2015 09:56:54 -0700
From:	Jens Axboe <axboe@...nel.dk>
To:	Raghavendra K T <raghavendra.kt@...ux.vnet.ibm.com>
Cc:	tom.leiming@...il.com, linux-block@...r.kernel.org,
	nacc@...ux.vnet.ibm.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] blk-mq: Avoid memoryless numa node encoded in hctx
 numa_node

On 12/02/2015 04:29 AM, Raghavendra K T wrote:
> In architecture like powerpc, we can have cpus without any local memory
> attached to it (a.k.a memoryless nodes). In such cases cpu to node mapping
> can result in memory allocation hints for block hctx->numa_node populated
> with node values which does not have real memory.
>
> Instead use local_memory_node(), which is guaranteed to have memory.
> local_memory_node is a noop in other architectures that does not support
> memoryless nodes.

Applied for 4.5, thanks.

-- 
Jens Axboe

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