From: Dan Williams <dan.j.williams@intel.com>
To: Vishal Verma <vishal.l.verma@intel.com>
Cc: linux-nvdimm <linux-nvdimm@lists.01.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
Ben Olson <ben.olson@intel.com>,
Michal Biesek <michal.biesek@intel.com>
Subject: Re: [ndctl PATCH 05/10] libdaxctl: allow memblock_in_dev() to return an error
Date: Fri, 18 Oct 2019 12:15:35 -0700 [thread overview]
Message-ID: <CAPcyv4hLfO=+SfAM7Ww6YVF7K3FgjTxks7bkx+KkmKbwS0Uczg@mail.gmail.com> (raw)
In-Reply-To: <20191002234925.9190-6-vishal.l.verma@intel.com>
On Wed, Oct 2, 2019 at 4:49 PM Vishal Verma <vishal.l.verma@intel.com> wrote:
>
> With the MEM_FIND_ZONE operation, and the expectation that it will be
> called from 'daxctl list' listings, it is possible that memblock_in_dev()
> gets called without sufficient privileges. If this happens, currently,
> the above simply returns a 'false'. This was acceptable when the only
> operations were onlining/offlining (as there would be an actual failure
> later). However, it is not acceptable in the MEM_FIND_ZONE case, as it
> could yeild a different answer based on the privilege level.
>
> Change memblock_in_dev() to return an 'int' instead of a 'bool' so that
> error cases can be distinguished from actual address range test.
>
> Cc: Dan Williams <dan.j.williams@intel.com>
> Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
Looks good:
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
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next prev parent reply other threads:[~2019-10-18 19:15 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-02 23:49 [ndctl PATCH 00/10] fixes and movability for system-ram mode Vishal Verma
2019-10-02 23:49 ` [ndctl PATCH 01/10] libdaxctl: refactor path construction in op_for_one_memblock() Vishal Verma
2019-10-18 18:43 ` Dan Williams
2019-10-02 23:49 ` [ndctl PATCH 02/10] libdaxctl: refactor memblock_is_online() checks Vishal Verma
2019-10-18 18:45 ` Dan Williams
2019-10-02 23:49 ` [ndctl PATCH 03/10] daxctl/device.c: fix json output omission for reconfigure-device Vishal Verma
2019-10-18 18:46 ` Dan Williams
2019-10-02 23:49 ` [ndctl PATCH 04/10] libdaxctl: add an API to determine if memory is movable Vishal Verma
2019-10-18 18:54 ` Dan Williams
2019-10-18 19:57 ` Verma, Vishal L
2019-10-18 20:40 ` Dan Williams
2019-10-02 23:49 ` [ndctl PATCH 05/10] libdaxctl: allow memblock_in_dev() to return an error Vishal Verma
2019-10-18 19:15 ` Dan Williams [this message]
2019-10-02 23:49 ` [ndctl PATCH 06/10] daxctl: show a 'movable' attribute in device listings Vishal Verma
2019-10-18 19:16 ` Dan Williams
2019-10-02 23:49 ` [ndctl PATCH 07/10] daxctl: detect races when onlining memory blocks Vishal Verma
2019-10-18 19:26 ` Dan Williams
2019-10-02 23:49 ` [ndctl PATCH 08/10] Documentation: clarify memory movablity for reconfigure-device Vishal Verma
2019-10-18 20:46 ` Dan Williams
2019-10-18 20:50 ` Verma, Vishal L
2019-10-02 23:49 ` [ndctl PATCH 09/10] libdaxctl: add an API to online memory in a non-movable state Vishal Verma
2019-10-18 20:54 ` Dan Williams
2019-10-02 23:49 ` [ndctl PATCH 10/10] daxctl: add --no-movable option for onlining memory Vishal Verma
2019-10-18 20:58 ` Dan Williams
2019-10-18 21:04 ` Verma, Vishal L
2019-10-18 21:25 ` Dan Williams
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