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authorChristoph Hellwig <hch@lst.de>2017-12-29 10:54:05 +0300
committerDan Williams <dan.j.williams@intel.com>2018-01-08 22:46:23 +0300
commite8d5134833006a46fcbefc5f4a84d0b62bd520e7 (patch)
treedbd532f4ef91828e251a291c967ee3afe71fd475 /drivers/nvdimm/pmem.h
parente7744aa25cffe26d3767c9ffcf4e130cca1dff00 (diff)
downloadlinux-e8d5134833006a46fcbefc5f4a84d0b62bd520e7.tar.xz
memremap: change devm_memremap_pages interface to use struct dev_pagemap
This new interface is similar to how struct device (and many others) work. The caller initializes a 'struct dev_pagemap' as required and calls 'devm_memremap_pages'. This allows the pagemap structure to be embedded in another structure and thus container_of can be used. In this way application specific members can be stored in a containing struct. This will be used by the P2P infrastructure and HMM could probably be cleaned up to use it as well (instead of having it's own, similar 'hmm_devmem_pages_create' function). Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm/pmem.h')
-rw-r--r--drivers/nvdimm/pmem.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/nvdimm/pmem.h b/drivers/nvdimm/pmem.h
index 6a3cd2a10db6..a64ebc78b5df 100644
--- a/drivers/nvdimm/pmem.h
+++ b/drivers/nvdimm/pmem.h
@@ -22,6 +22,7 @@ struct pmem_device {
struct badblocks bb;
struct dax_device *dax_dev;
struct gendisk *disk;
+ struct dev_pagemap pgmap;
};
long __pmem_direct_access(struct pmem_device *pmem, pgoff_t pgoff,