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authorDan Williams <dan.j.williams@intel.com>2016-03-11 21:15:36 +0300
committerDan Williams <dan.j.williams@intel.com>2016-05-10 01:35:42 +0300
commitcd03412a51ac4cb3001a8cdfae4560c9602f3387 (patch)
treec2d501759d7d96fab9a0f70eefba139876bb12de /drivers/nvdimm/claim.c
parent0bfb8dd3edd6e423b5053c86e10c97e92cf205ea (diff)
downloadlinux-cd03412a51ac4cb3001a8cdfae4560c9602f3387.tar.xz
libnvdimm, dax: introduce device-dax infrastructure
Device DAX is the device-centric analogue of Filesystem DAX (CONFIG_FS_DAX). It allows persistent memory ranges to be allocated and mapped without need of an intervening file system. This initial infrastructure arranges for a libnvdimm pfn-device to be represented as a different device-type so that it can be attached to a driver other than the pmem driver. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm/claim.c')
-rw-r--r--drivers/nvdimm/claim.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/nvdimm/claim.c b/drivers/nvdimm/claim.c
index 6bbd0a36994a..5f53db59a058 100644
--- a/drivers/nvdimm/claim.c
+++ b/drivers/nvdimm/claim.c
@@ -85,6 +85,8 @@ static bool is_idle(struct device *dev, struct nd_namespace_common *ndns)
seed = nd_region->btt_seed;
else if (is_nd_pfn(dev))
seed = nd_region->pfn_seed;
+ else if (is_nd_dax(dev))
+ seed = nd_region->dax_seed;
if (seed == dev || ndns || dev->driver)
return false;