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Date:   Thu, 4 Jul 2019 20:01:39 +1000
From:   Stephen Rothwell <>
To:     Andrew Morton <>,
        Jason Gunthorpe <>
Cc:     Linux Next Mailing List <>,
        Linux Kernel Mailing List <>,
        Christoph Hellwig <>,
        Pavel Tatashin <>
Subject: linux-next: manual merge of the akpm-current tree with the hmm tree

Hi all,

Today's linux-next merge of the akpm-current tree got a conflict in:


between commit:

  ea31d5859f58 ("device-dax: use the dev_pagemap internal refcount")

from the hmm tree and commit:

  420a0854e8f2 ("device-dax: "Hotremove" persistent memory that is used like normal RAM")

from the akpm-current tree.

I fixed it up (see below) and can carry the fix as necessary. This
is now fixed as far as linux-next is concerned, but any non trivial
conflicts should be mentioned to your upstream maintainer when your tree
is submitted for merging.  You may also want to consider cooperating
with the maintainer of the conflicting tree to minimise any particularly
complex conflicts.

Stephen Rothwell

diff --cc drivers/dax/dax-private.h
index c915889d1769,9ee659ed5566..000000000000
--- a/drivers/dax/dax-private.h
+++ b/drivers/dax/dax-private.h
@@@ -43,6 -43,9 +43,7 @@@ struct dax_region 
   * @target_node: effective numa node if dev_dax memory range is onlined
   * @dev - device core
   * @pgmap - pgmap for memmap setup / lifetime (driver owned)
 - * @ref: pgmap reference count (driver owned)
 - * @cmp: @ref final put completion (driver owned)
+  * @dax_mem_res: physical address range of hotadded DAX memory
  struct dev_dax {
  	struct dax_region *region;
@@@ -50,6 -53,9 +51,7 @@@
  	int target_node;
  	struct device dev;
  	struct dev_pagemap pgmap;
 -	struct percpu_ref ref;
 -	struct completion cmp;
+ 	struct resource *dax_kmem_res;
  static inline struct dev_dax *to_dev_dax(struct device *dev)

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