[nvdimm PATCH 0/6] Label initialization time optimizations

Alexander Duyck
2018-10-10T23:36:23Z

This patch set is intended to improve NVDIMM label read times by first
increasing the upper limit on the label read/write size, and then
reducing the number of reads by making use of the free label bitmap in
the index to determine what labels are actually populated and only read
those labels. In my testing on a system populated with 24 NVDIMM modules
I see the total label init time drop from about 24 seconds down to 2 to
3 seconds.

In the process of coding this up I came across a few minor issues that
I felt should be addressed so I have added a few patches for those fixes
along the way.

---

Alexander Duyck (5):
nvdimm: Sanity check labeloff
nvdimm: Clarify comment in sizeof_namespace_index
nvdimm: Remove empty if statement
nvdimm: Split label init out from the logic for getting config data
nvdimm: Use namespace index data to reduce number of label reads needed

Dan Williams (1):
libnvdimm, dimm: Maximize label transfer size

drivers/nvdimm/dimm.c | 6 --
drivers/nvdimm/dimm_devs.c | 60 +++++++------------
drivers/nvdimm/label.c | 142 ++++++++++++++++++++++++++++++++++++++++++--
drivers/nvdimm/label.h | 4 -
drivers/nvdimm/nd.h | 2 +
5 files changed, 163 insertions(+), 51 deletions(-)

--