From: Gabriel Krisman Bertazi
In blk_mq_map_swqueue, there is a memory optimization that frees the
tags of a queue that has gone unmapped. Later, if that hctx is remapped
after another topology change, the tags need to be reallocated.
If this allocation fails, a simple WARN_ON triggers, but the
On 12/14/2016 01:48 PM, Gabriel Krisman Bertazi wrote:
> From: Gabriel Krisman Bertazi
>
> In blk_mq_map_swqueue, there is a memory optimization that frees the
> tags of a queue that has gone unmapped. Later, if that hctx is remapped
> after another topology change, the tags need to be reallocat
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