linux-kernel - Re: [PATCH 1/1] NVMe: Do not take nsid while a passthrough IO command is being issued via a block device file descriptor

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Date:	Thu, 22 Jan 2015 23:57:08 -0800
From:	Christoph Hellwig <hch@...radead.org>
To:	Yan Liu <yan@...estorage.com>
Cc:	Matthew Wilcox <willy@...ux.intel.com>,
	linux-nvme@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] NVMe: Do not take nsid while a passthrough IO
 command is being issued via a block device file descriptor

On Thu, Jan 22, 2015 at 04:02:08PM -0800, Yan Liu wrote:
> When a passthrough IO command is issued with a specific block device file descriptor. It should be applied at
> the namespace which is associated with that block device file descriptor. This patch makes such passthrough
> command ignore nsid in nvme_passthru_cmd structure. Instead it takes the namespace ID asscoiated with the
> block device descriptor.
> 
> Signed-off-by: Yan Liu <yan@...estorage.com>

Please move the code to find the ns into the caller, or even better a
seaprate helper used by the caller. instead of adding another argument to
nvme_user_cmd.
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