On Wed, 2015-06-17 at 19:56 -0400, Dan Williams wrote: > Upon detection of a read-only backing device arrange for the btt to > device to be read only. Implement a catch for the BLKROSET ioctl and > only allow a btt-instance to become read-write when the backing-device > becomes read-write. Conversely, if a backing-device becomes read-only > arrange for its parent btt to be marked read-only. Synchronize these > changes under the bus lock. > > Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx> > --- > drivers/nvdimm/blk.c | 4 +++ > drivers/nvdimm/btt.c | 34 ++++++++++++++++++++++++++-- > drivers/nvdimm/btt_devs.c | 42 ++++++++++++++++++++++++++++++++++ > drivers/nvdimm/bus.c | 55 +++++++++++++++++++++++++++++++++++++++++++++ > drivers/nvdimm/nd-core.h | 14 +++++++++++ > drivers/nvdimm/nd.h | 4 +++ > drivers/nvdimm/pmem.c | 4 +++ > 7 files changed, 154 insertions(+), 3 deletions(-) Reviewed-by: Vishal Verma <vishal.l.verma@xxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
