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Re: [PATCH 03/15] nd_btt: atomic sector updates

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On Sun, Jun 21, 2015 at 3:03 AM, Christoph Hellwig <hch@lst.de> wrote:
>> +config ND_MAX_REGIONS
>> +     int "Maximum number of regions supported by the sub-system"
>> +     default 64
>> +     ---help---
>> +       A 'region' corresponds to an individual DIMM or an interleave
>> +       set of DIMMs.  A typical maximally configured system may have
>> +       up to 32 DIMMs.
>> +
>> +       Leave the default of 64 if you are unsure.
>
> Having static limits in Kconfig is a bad idea.  What prevents you
> from handling any (reasonable) number dynamically?

Hmm, yes, this was a bad holdover from before we were using percpu
definitions for the lane locks.  Now that it's converted we can kill
the static definition of nd_percpu_lane and just do an alloc_percpu()
for each region dynamically.  Fixed in v2 and passing the test suite.
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[PATCH 00/15] libnvdimm: ->rw_bytes(), BLK-mode, unit tests,  and misc features Dan Williams <dan.j.williams@intel.com> - 2015-06-18 02:00 +0200
  [PATCH 12/15] libnvdimm: enable iostat Dan Williams <dan.j.williams@intel.com> - 2015-06-18 02:00 +0200
    Re: [PATCH 12/15] libnvdimm: enable iostat Christoph Hellwig <hch@lst.de> - 2015-06-19 10:40 +0200
      Re: [PATCH 12/15] libnvdimm: enable iostat Dan Williams <dan.j.williams@intel.com> - 2015-06-19 11:10 +0200
        Re: [PATCH 12/15] libnvdimm: enable iostat Christoph Hellwig <hch@lst.de> - 2015-06-21 12:20 +0200
  [PATCH 07/15] fs/block_dev.c: skip rw_page if bdev has integrity Dan Williams <dan.j.williams@intel.com> - 2015-06-18 02:00 +0200
  [PATCH 13/15] libnvdimm: flag libnvdimm block devices as  non-rotational Dan Williams <dan.j.williams@intel.com> - 2015-06-18 02:00 +0200
  [PATCH 01/15] block: introduce an ->rw_bytes() block device  operation Dan Williams <dan.j.williams@intel.com> - 2015-06-18 02:00 +0200
    Re: [PATCH 01/15] block: introduce an ->rw_bytes() block device operation Dan Williams <dan.j.williams@intel.com> - 2015-06-18 21:30 +0200
  [PATCH 09/15] libnvdimm, blk: add support for blk integrity Dan Williams <dan.j.williams@intel.com> - 2015-06-18 02:00 +0200
  [PATCH 15/15] libnvdimm, nfit: handle acpi_nfit_memory_map flags Dan Williams <dan.j.williams@intel.com> - 2015-06-18 02:00 +0200
  [PATCH 11/15] libnvdimm: pmem, blk, and btt make_request cleanups Dan Williams <dan.j.williams@intel.com> - 2015-06-18 02:10 +0200
    Re: [PATCH 11/15] libnvdimm: pmem, blk, and btt make_request  cleanups Christoph Hellwig <hch@lst.de> - 2015-06-21 12:20 +0200
  [PATCH 08/15] libnvdimm, btt: add support for blk integrity Dan Williams <dan.j.williams@intel.com> - 2015-06-18 02:10 +0200
  [PATCH 02/15] libnvdimm: infrastructure for btt devices Dan Williams <dan.j.williams@intel.com> - 2015-06-18 02:10 +0200
  [PATCH 10/15] libnvdimm: fix up max_hw_sectors Dan Williams <dan.j.williams@intel.com> - 2015-06-18 02:10 +0200
    Re: [PATCH 10/15] libnvdimm: fix up max_hw_sectors Christoph Hellwig <hch@lst.de> - 2015-06-21 12:10 +0200
  Re: [PATCH 03/15] nd_btt: atomic sector updates Christoph Hellwig <hch@lst.de> - 2015-06-21 12:10 +0200
    Re: [PATCH 03/15] nd_btt: atomic sector updates Dan Williams <dan.j.williams@intel.com> - 2015-06-21 18:40 +0200
  Re: [PATCH 04/15] libnvdimm, nfit, nd_blk: driver for BLK-mode  access persistent memory Christoph Hellwig <hch@lst.de> - 2015-06-21 12:10 +0200
    Re: [PATCH 04/15] libnvdimm, nfit, nd_blk: driver for BLK-mode access  persistent memory Dan Williams <dan.j.williams@intel.com> - 2015-06-21 16:50 +0200

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