From: Christoph Hellwig <hch@lst.de>
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 2/7] mm, devm_memremap_pages: Kill mapping "System RAM" support
Date: Fri, 14 Sep 2018 15:14:20 +0200 [thread overview]
Message-ID: <20180914131420.GC27141@lst.de> (raw)
In-Reply-To: <153680533172.453305.5701902165148172434.stgit@dwillia2-desk3.amr.corp.intel.com>
On Wed, Sep 12, 2018 at 07:22:11PM -0700, Dan Williams wrote:
> Given the fact that devm_memremap_pages() requires a percpu_ref that is
> torn down by devm_memremap_pages_release() the current support for
> mapping RAM is broken.
I agree. Do you remember why we even added it in the first place?
Signed-off-by: Christoph Hellwig <hch@lst.de>
next prev parent reply other threads:[~2018-09-14 13:14 UTC|newest]
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 [this message]
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
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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