Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1634045

Re: [PATCH] libnvdimm: rework region badblocks clearing

Show all headers | View raw

On Mon, May 1, 2017 at 2:26 PM, Kani, Toshimitsu <toshi.kani@hpe.com> wrote:
> On Sun, 2017-04-30 at 05:39 -0700, Dan Williams wrote:
>> Toshi noticed that the new support for a region-level badblocks
>> missed the case where errors are cleared due to BTT I/O.
>>
>> An initial attempt to fix this ran into a "sleeping while atomic"
>> warning due to taking the nvdimm_bus_lock() in the BTT I/O path to
>> satisfy the locking requirements of __nvdimm_bus_badblocks_clear().
>> However, that lock is not needed since we are not acting any data
>> that is subject to change due to a change of state of the bus /
>> region. The badblocks instance has its own internal lock to handle
>> mutations of the error list.
>>
>> So, to make it clear that we are just acting on region devices and
>> don't need the lock rename __nvdimm_bus_badblocks_clear() to
>> nvdimm_clear_badblocks_regions(). Eliminate the lock and consolidate
>> all routines in drivers/nvdimm/bus.c. Also, make some cleanups to
>> remove unnecessary casts, make the calling convention of
>> nvdimm_clear_badblocks_regions() clearer by replacing struct resource
>> with the minimal struct clear_badblocks_context, and use the
>> DEVICE_ATTR macro.
>>
>> Cc: Dave Jiang <dave.jiang@intel.com>
>> Cc: Vishal Verma <vishal.l.verma@intel.com>
>> Reported-by: Toshi Kani <toshi.kani@hpe.com>
>> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
>
> Confirmed that the clear path to the region-level badblocks works with
> the btt workaround and ndctl fix.
>
> Tested-by: Toshi Kani <toshi.kani@hpe.com>

Thanks Toshi!

Back to linux.kernel | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

[PATCH] libnvdimm: rework region badblocks clearing Dan Williams <dan.j.williams@intel.com> - 2017-04-30 14:50 +0200
  Re: [PATCH] libnvdimm: rework region badblocks clearing Dan Williams <dan.j.williams@intel.com> - 2017-05-01 17:50 +0200
    Re: [PATCH] libnvdimm: rework region badblocks clearing Dan Williams <dan.j.williams@intel.com> - 2017-05-01 18:00 +0200
      Re: [PATCH] libnvdimm: rework region badblocks clearing Dan Williams <dan.j.williams@intel.com> - 2017-05-01 18:20 +0200
        Re: [PATCH] libnvdimm: rework region badblocks clearing "Kani, Toshimitsu" <toshi.kani@hpe.com> - 2017-05-01 18:30 +0200
          Re: [PATCH] libnvdimm: rework region badblocks clearing Dan Williams <dan.j.williams@intel.com> - 2017-05-01 18:40 +0200
            Re: [PATCH] libnvdimm: rework region badblocks clearing "Verma, Vishal L" <vishal.l.verma@intel.com> - 2017-05-01 18:50 +0200
              Re: [PATCH] libnvdimm: rework region badblocks clearing "Kani, Toshimitsu" <toshi.kani@hpe.com> - 2017-05-01 19:00 +0200
      Re: [PATCH] libnvdimm: rework region badblocks clearing "Kani, Toshimitsu" <toshi.kani@hpe.com> - 2017-05-01 18:20 +0200
  Re: [PATCH] libnvdimm: rework region badblocks clearing "Kani, Toshimitsu" <toshi.kani@hpe.com> - 2017-05-01 17:50 +0200
  Re: [PATCH] libnvdimm: rework region badblocks clearing "Kani, Toshimitsu" <toshi.kani@hpe.com> - 2017-05-01 23:30 +0200
    Re: [PATCH] libnvdimm: rework region badblocks clearing Dan Williams <dan.j.williams@intel.com> - 2017-05-02 01:10 +0200

csiph-web