[ndctl PATCH 0/5] ndctl: Optimize label operations

In almost all use cases ndctl was reading more label data than necessary to carry out tasks like "init-labels" and the auto-label capability of "create-namespace". Outside of index-block scoped operations above, there is utility in being able to specify an extent range smaller than the full capacity to "{read,write,zero}-labels". Deploy optimizations to only operate on the index blocks when possible, and allow for custom extents for the generic operations. --- Dan Williams (5): ndctl/dimm: Support small label reads/writes ndctl/dimm: Minimize data-transfer for init-labels ndctl/dimm: Add offset and size options to {read,write,zero}-labels ndctl/dimm: Limit read-labels with --index option ndctl/namespace: Minimize label data transfer for autolabel Documentation/ndctl/labels-options.txt | 9 +++ ndctl/dimm.c | 88 ++++++++++++++++++-------- ndctl/lib/dimm.c | 85 +++++++++++++++++++++++-- ndctl/lib/libndctl.c | 107 ++++++++++++++++++++++++++++---- ndctl/lib/libndctl.sym | 5 + ndctl/lib/private.h | 4 - ndctl/libndctl.h | 9 +++ ndctl/namespace.c | 2 - util/util.h | 4 + 9 files changed, 260 insertions(+), 53 deletions(-)