[dm-devel] [PATCH] libmultipath/discovery: read sysfs files uncached

Kay Sievers kay at vrfy.org
Thu Apr 4 11:59:37 UTC 2013


On Thu, Apr 4, 2013 at 12:20 PM, Hannes Reinecke <hare at suse.de> wrote:
> On 04/04/2013 12:00 PM, Kay Sievers wrote:
>> On Thu, Apr 4, 2013 at 8:43 AM, Hannes Reinecke <hare at suse.de> wrote:
>>>>> Unfortunately, libudev doesn't provide an uncached variant. This
>>>>> is why we have to reimplement the functionality and some libudev
>>>>> internal functions here.
>>
>> Hannes,
>>
>> didn't you intend to use udev_device_set_sysattr_value(..., attribute,
>> NULL); to clear the cached value?
>>
>
> Yes, it should. Question remains, though, what happens to the actual
> sysfs attribute.
> Does it remain unchained? Will it be set to '0'?

Hey, you wrote that function. :) It writes 0 bytes, so it should not
do anything. It should probably skip all that, or did you do that for
a reason?

Kay




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