linux-kernel - Re: [PATCH 11/13] libnvdimm, pmem, pfn: make pmem_rw

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Message-ID: <5983443.ftVyGZcjEZ@c203>
Date:	Thu, 24 Mar 2016 14:50:44 +0100
From:	Johannes Thumshirn <jthumshirn@...e.de>
To:	linux-nvdimm@...ts.01.org
Cc:	Dan Williams <dan.j.williams@...el.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 11/13] libnvdimm, pmem, pfn: make pmem_rw_bytes generic and refactor pfn setup

On Mittwoch, 23. März 2016 18:26:18 CET Dan Williams wrote:
> In preparation for providing an alternative (to block device) access
> mechanism to persistent memory, convert pmem_rw_bytes() to
> nsio_rw_bytes().  This allows ->rw_bytes() functionality without
> requiring a 'struct pmem_device' to be instantiated.
> 
> In other words, when ->rw_bytes() is in use i/o is driven through
> 'struct nd_namespace_io', otherwise it is driven through 'struct
> pmem_device' and the block layer.  This consolidates the disjoint calls
> to devm_exit_badblocks() and devm_memunmap() into a common
> devm_nsio_disable() and cleans up the init path to use a unified
> pmem_attach_disk() implementation.
> 
> Signed-off-by: Dan Williams <dan.j.williams@...el.com>

Reviewed-by: Johannes Thumshirn <jthumshirn@...e.de>

-- 
Johannes Thumshirn                                          Storage
jthumshirn@...e.de                                +49 911 74053 689
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