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authorVishal Verma <vishal.l.verma@intel.com>2016-01-09 08:36:51 -0800
committerDan Williams <dan.j.williams@intel.com>2016-01-09 08:36:51 -0800
commit99e6608c9e7414ae4f2168df8bf8fae3eb49e41f (patch)
tree20ab40762557164e1358a960782410c33bd4f423 /drivers/md/md.h
parent9e0e252a048b0ba5066f0dc15c3b2468ffe5c422 (diff)
block: Add badblock management for gendisks
NVDIMM devices, which can behave more like DRAM rather than block devices, may develop bad cache lines, or 'poison'. A block device exposed by the pmem driver can then consume poison via a read (or write), and cause a machine check. On platforms without machine check recovery features, this would mean a crash. The block device maintaining a runtime list of all known sectors that have poison can directly avoid this, and also provide a path forward to enable proper handling/recovery for DAX faults on such a device. Use the new badblock management interfaces to add a badblocks list to gendisks. Signed-off-by: Vishal Verma <vishal.l.verma@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/md/md.h')
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