Re: [PATCH 04/17] mm: pass the vmem_altmap to arch_add_memory and __add_pages

revamp vmem_altmap / dev_pagemap handling V2 · Christoph Hellwig <hch@lst.de> · 2017-12-15
[PATCH 01/17] memremap: provide stubs for vmem_altmap_offset and vmem_altmap_free · Christoph Hellwig <hch@lst.de> · 2017-12-15
Re: [PATCH 01/17] memremap: provide stubs for vmem_altmap_offset and vmem_altmap_free · Dan Williams <hidden> · 2017-12-16
[PATCH 02/17] mm: don't export arch_add_memory · Christoph Hellwig <hch@lst.de> · 2017-12-15
Re: [PATCH 02/17] mm: don't export arch_add_memory · Dan Williams <hidden> · 2017-12-16
[PATCH 05/17] mm: pass the vmem_altmap to vmemmap_populate · Christoph Hellwig <hch@lst.de> · 2017-12-15
Re: [PATCH 05/17] mm: pass the vmem_altmap to vmemmap_populate · Dan Williams <hidden> · 2017-12-16
[PATCH 07/17] mm: pass the vmem_altmap to vmemmap_free · Christoph Hellwig <hch@lst.de> · 2017-12-15
Re: [PATCH 07/17] mm: pass the vmem_altmap to vmemmap_free · Dan Williams <hidden> · 2017-12-16
[PATCH 08/17] mm: pass the vmem_altmap to memmap_init_zone · Christoph Hellwig <hch@lst.de> · 2017-12-15
Re: [PATCH 08/17] mm: pass the vmem_altmap to memmap_init_zone · Dan Williams <hidden> · 2017-12-16
[PATCH 09/17] mm: split altmap memory map allocation from normal case · Christoph Hellwig <hch@lst.de> · 2017-12-15
Re: [PATCH 09/17] mm: split altmap memory map allocation from normal case · Dan Williams <hidden> · 2017-12-16
[PATCH 10/17] mm: merge vmem_altmap_alloc into altmap_alloc_block_buf · Christoph Hellwig <hch@lst.de> · 2017-12-15
Re: [PATCH 10/17] mm: merge vmem_altmap_alloc into altmap_alloc_block_buf · Dan Williams <hidden> · 2017-12-16
[PATCH 12/17] mm: optimize dev_pagemap reference counting around get_dev_pagemap · Christoph Hellwig <hch@lst.de> · 2017-12-15
Re: [PATCH 12/17] mm: optimize dev_pagemap reference counting around get_dev_pagemap · Dan Williams <hidden> · 2017-12-17
[PATCH 13/17] memremap: remove to_vmem_altmap · Christoph Hellwig <hch@lst.de> · 2017-12-15
Re: [PATCH 13/17] memremap: remove to_vmem_altmap · Dan Williams <hidden> · 2017-12-17
[PATCH 14/17] memremap: simplify duplicate region handling in devm_memremap_pages · Christoph Hellwig <hch@lst.de> · 2017-12-15
Re: [PATCH 14/17] memremap: simplify duplicate region handling in devm_memremap_pages · Dan Williams <hidden> · 2017-12-17
Re: [PATCH 14/17] memremap: simplify duplicate region handling in devm_memremap_pages · Christoph Hellwig <hch@lst.de> · 2017-12-19
[PATCH 15/17] memremap: drop private struct page_map · Christoph Hellwig <hch@lst.de> · 2017-12-15
Re: [PATCH 15/17] memremap: drop private struct page_map · Dan Williams <hidden> · 2017-12-17
[PATCH 17/17] memremap: merge find_dev_pagemap into get_dev_pagemap · Christoph Hellwig <hch@lst.de> · 2017-12-15
Re: [PATCH 17/17] memremap: merge find_dev_pagemap into get_dev_pagemap · Dan Williams <hidden> · 2017-12-17
[PATCH 16/17] memremap: change devm_memremap_pages interface to use struct dev_pagemap · Christoph Hellwig <hch@lst.de> · 2017-12-15
Re: [PATCH 16/17] memremap: change devm_memremap_pages interface to use struct dev_pagemap · Dan Williams <hidden> · 2017-12-17
Re: [PATCH 16/17] memremap: change devm_memremap_pages interface to use struct dev_pagemap · Christoph Hellwig <hch@lst.de> · 2017-12-19
[PATCH 11/17] mm: move get_dev_pagemap out of line · Christoph Hellwig <hch@lst.de> · 2017-12-15
Re: [PATCH 11/17] mm: move get_dev_pagemap out of line · Dan Williams <hidden> · 2017-12-17
[PATCH 06/17] mm: pass the vmem_altmap to arch_remove_memory and __remove_pages · Christoph Hellwig <hch@lst.de> · 2017-12-15
Re: [PATCH 06/17] mm: pass the vmem_altmap to arch_remove_memory and __remove_pages · Dan Williams <hidden> · 2017-12-16
Re: [PATCH 06/17] mm: pass the vmem_altmap to arch_remove_memory and __remove_pages · Christoph Hellwig <hch@lst.de> · 2017-12-19
[PATCH 04/17] mm: pass the vmem_altmap to arch_add_memory and __add_pages · Christoph Hellwig <hch@lst.de> · 2017-12-15
Re: [PATCH 04/17] mm: pass the vmem_altmap to arch_add_memory and __add_pages · Dan Williams <hidden> · 2017-12-16
Re: [PATCH 04/17] mm: pass the vmem_altmap to arch_add_memory and __add_pages · Dan Williams <hidden> · 2017-12-17
Re: [PATCH 04/17] mm: pass the vmem_altmap to arch_add_memory and __add_pages · Dan Williams <hidden> · 2017-12-23
Re: [PATCH 04/17] mm: pass the vmem_altmap to arch_add_memory and __add_pages · Dan Williams <hidden> · 2017-12-23
[PATCH 03/17] mm: don't export __add_pages · Christoph Hellwig <hch@lst.de> · 2017-12-15
Re: [PATCH 03/17] mm: don't export __add_pages · Dan Williams <hidden> · 2017-12-16
Re: revamp vmem_altmap / dev_pagemap handling V2 · Dan Williams <hidden> · 2017-12-19

From: Dan Williams <hidden>
Date: 2017-12-16 01:48:23
Also in: linux-mm, lkml, nvdimm

On Fri, Dec 15, 2017 at 6:09 AM, Christoph Hellwig [off-list ref] wrote:

We can just pass this on instead of having to do a radix tree lookup
without proper locking 2 levels into the callchain.

Signed-off-by: Christoph Hellwig <hch@lst.de>

Yeah, the lookup of vmem_altmap is too magical and surprising this is better.

Reviewed-by: Dan Williams <redacted>

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