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From: Balbir Singh <bsingharora@gmail.com>
To: Dan Williams <dan.j.williams@intel.com>
Cc: akpm@linux-foundation.org, "Christoph Hellwig" <hch@lst.de>,
	"Jérôme Glisse" <jglisse@redhat.com>,
	"Logan Gunthorpe" <logang@deltatee.com>,
	alexander.h.duyck@intel.com, linux-mm@kvack.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v5 6/7] mm, hmm: Replace hmm_devmem_pages_create() with devm_memremap_pages()
Date: Wed, 19 Sep 2018 11:24:15 +1000
Message-ID: <20180919012415.GE8537@350D> (raw)
In-Reply-To: <153680535314.453305.11205770267271657025.stgit@dwillia2-desk3.amr.corp.intel.com>

On Wed, Sep 12, 2018 at 07:22:33PM -0700, Dan Williams wrote:
> Commit e8d513483300 "memremap: change devm_memremap_pages interface to
> use struct dev_pagemap" refactored devm_memremap_pages() to allow a
> dev_pagemap instance to be supplied. Passing in a dev_pagemap interface
> simplifies the design of pgmap type drivers in that they can rely on
> container_of() to lookup any private data associated with the given
> dev_pagemap instance.
> 
> In addition to the cleanups this also gives hmm users multi-order-radix
> improvements that arrived with commit ab1b597ee0e4 "mm,
> devm_memremap_pages: use multi-order radix for ZONE_DEVICE lookups"
> 
> As part of the conversion to the devm_memremap_pages() method of
> handling the percpu_ref relative to when pages are put, the percpu_ref
> completion needs to move to hmm_devmem_ref_exit(). See commit
> 71389703839e ("mm, zone_device: Replace {get, put}_zone_device_page...")
> for details.
> 
> Reviewed-by: Christoph Hellwig <hch@lst.de>
> Cc: "Jérôme Glisse" <jglisse@redhat.com>
> Cc: Logan Gunthorpe <logang@deltatee.com>
> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
> ---

Looks like a good cleanup

Acked-by: Balbir Singh <bsingharora@gmail.com>

  parent reply index

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-13  2:22 [PATCH v5 0/7] mm: Merge hmm into devm_memremap_pages, mark GPL-only Dan Williams
2018-09-13  2:22 ` [PATCH v5 1/7] mm, devm_memremap_pages: Mark devm_memremap_pages() EXPORT_SYMBOL_GPL Dan Williams
2018-09-13 16:25   ` Logan Gunthorpe
2018-09-13  2:22 ` [PATCH v5 2/7] mm, devm_memremap_pages: Kill mapping "System RAM" support Dan Williams
2018-09-13 16:10   ` Logan Gunthorpe
2018-09-14 13:14   ` Christoph Hellwig
2018-09-14 17:40     ` Dan Williams
2018-09-18 20:28   ` Jerome Glisse
2018-09-13  2:22 ` [PATCH v5 3/7] mm, devm_memremap_pages: Fix shutdown handling Dan Williams
2018-09-14 13:16   ` Christoph Hellwig
2018-09-14 17:25     ` Dan Williams
2018-09-18 20:28   ` Jerome Glisse
2018-09-13  2:22 ` [PATCH v5 4/7] mm, devm_memremap_pages: Add MEMORY_DEVICE_PRIVATE support Dan Williams
2018-09-14 13:18   ` Christoph Hellwig
2018-09-18 20:34   ` Jerome Glisse
2018-09-13  2:22 ` [PATCH v5 5/7] mm, hmm: Use devm semantics for hmm_devmem_{add, remove} Dan Williams
2018-09-14 13:18   ` Christoph Hellwig
2018-09-14 14:16     ` Jerome Glisse
2018-09-18 20:34   ` Jerome Glisse
2018-09-13  2:22 ` [PATCH v5 6/7] mm, hmm: Replace hmm_devmem_pages_create() with devm_memremap_pages() Dan Williams
2018-09-18 20:35   ` Jerome Glisse
2018-09-19  1:24   ` Balbir Singh [this message]
2018-09-13  2:22 ` [PATCH v5 7/7] mm, hmm: Mark hmm_devmem_{add, add_resource} EXPORT_SYMBOL_GPL Dan Williams

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