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| author | Dan Williams <dan.j.williams@intel.com> | 2015-06-25 04:20:04 -0400 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2015-06-25 04:20:04 -0400 |
| commit | 8c2f7e8658df1d3b7cbfa62706941d14c715823a (patch) | |
| tree | ac93512841113f4d1d7a38d788ec73bb21e2d605 /Documentation/nvdimm | |
| parent | 0ba1c634892b3590779803a701bcb82e8c32cc7a (diff) | |
| download | linux-next-8c2f7e8658df1d3b7cbfa62706941d14c715823a.tar.gz | |
libnvdimm: infrastructure for btt devices
NVDIMM namespaces, in addition to accepting "struct bio" based requests,
also have the capability to perform byte-aligned accesses. By default
only the bio/block interface is used. However, if another driver can
make effective use of the byte-aligned capability it can claim namespace
interface and use the byte-aligned ->rw_bytes() interface.
The BTT driver is the initial first consumer of this mechanism to allow
adding atomic sector update semantics to a pmem or blk namespace. This
patch is the sysfs infrastructure to allow configuring a BTT instance
for a namespace. Enabling that BTT and performing i/o is in a
subsequent patch.
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Neil Brown <neilb@suse.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'Documentation/nvdimm')
0 files changed, 0 insertions, 0 deletions