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Date: Thu, 1 Dec 2016 11:11:06 -0500
From: Steven Rostedt <rostedt@goodmis.org>
Subject: Re: [PATCH v2 6/6] dax: add tracepoints to dax_pmd_insert_mapping()
Message-ID: <20161201111106.47510605@gandalf.local.home>
In-Reply-To: <20161201154432.GD5160@linux.intel.com>
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	<1480549533-29038-7-git-send-email-ross.zwisler@linux.intel.com>
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To: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: linux-kernel@vger.kernel.org, Alexander Viro <viro@zeniv.linux.org.uk>, Andrew Morton <akpm@linux-foundation.org>, Christoph Hellwig <hch@lst.de>, Dan Williams <dan.j.williams@intel.com>, Dave Chinner <david@fromorbit.com>, Ingo Molnar <mingo@redhat.com>, Jan Kara <jack@suse.cz>, Matthew Wilcox <mawilcox@microsoft.com>, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-nvdimm@lists.01.org

On Thu, 1 Dec 2016 08:44:32 -0700
Ross Zwisler <ross.zwisler@linux.intel.com> wrote:


> Actually I think it may be ideal to stick it as the 2nd entry after 'dev'.
> dev_t is:
> 
> typedef __u32 __kernel_dev_t;
> typedef __kernel_dev_t		dev_t;
> 
> So those two 32 bit values should combine into a single 64 bit space.

Yeah that should work too.

-- Steve

> 
> Thanks for the help, I obviously wasn't considering packing when ordering the
> elements.

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