Displaying 6 results from an estimated 6 matches for "dev_attr_ecc".
2016 Jun 30
1
[PATCH v2 04/12] axonrom: Generate uevent after attribute available
...; @@ -262,6 +262,7 @@ static int axon_ram_probe(struct platform_device *device)
> rc = -EFAULT;
> goto failed;
> }
> + disk_gen_uevents(bank->disk);
I assume you are doing this after:
rc = device_create_file(&device->dev, &dev_attr_ecc);
...so that userspace gets notified of the new attribute, but this
attribute is on the parent device, not the disk itself. Instead I
think this attribute should simply be registered before the call to
add_disk(). Then the KOBJ_ADD event for the disk comes after the
attribute is available. It...
2016 Jun 30
1
[PATCH v2 04/12] axonrom: Generate uevent after attribute available
...; @@ -262,6 +262,7 @@ static int axon_ram_probe(struct platform_device *device)
> rc = -EFAULT;
> goto failed;
> }
> + disk_gen_uevents(bank->disk);
I assume you are doing this after:
rc = device_create_file(&device->dev, &dev_attr_ecc);
...so that userspace gets notified of the new attribute, but this
attribute is on the parent device, not the disk itself. Instead I
think this attribute should simply be registered before the call to
add_disk(). Then the KOBJ_ADD event for the disk comes after the
attribute is available. It...
2016 Jun 30
17
[PATCH v2 00/12] gendisk: Generate uevent after attribute available
The race condition is noticed between disk_add() and disk attributes, on
virtio-blk hotplug.
Userspace listens to the KOBJ_ADD uevent generated in add_disk(). At that
point we haven't created the serial attribute file, therefore depending
on how fast udev reacts, the /dev/disk/by-id/ entry doesn't always get
created.
As pointed out by Christoph Hellwig in the specific fix [1], virtio-blk
2016 Jun 30
17
[PATCH v2 00/12] gendisk: Generate uevent after attribute available
The race condition is noticed between disk_add() and disk attributes, on
virtio-blk hotplug.
Userspace listens to the KOBJ_ADD uevent generated in add_disk(). At that
point we haven't created the serial attribute file, therefore depending
on how fast udev reacts, the /dev/disk/by-id/ entry doesn't always get
created.
As pointed out by Christoph Hellwig in the specific fix [1], virtio-blk
2016 Aug 17
20
[PATCH 00/15] Fix issue with KOBJ_ADD uevent versus disk attributes
This is an attempt to fix the issue that some disks' sysfs attributes are not
ready at the time its KOBJ_ADD event is sent.
The symptom is during device hotplug, udev may fail to find certain attributes,
such as serial or wwn, of the disk. As a result the /dev/disk/by-id entries are
not created.
The cause is device_add_disk emits the uevent before returning, and the callers
have to create
2016 Aug 17
20
[PATCH 00/15] Fix issue with KOBJ_ADD uevent versus disk attributes
This is an attempt to fix the issue that some disks' sysfs attributes are not
ready at the time its KOBJ_ADD event is sent.
The symptom is during device hotplug, udev may fail to find certain attributes,
such as serial or wwn, of the disk. As a result the /dev/disk/by-id entries are
not created.
The cause is device_add_disk emits the uevent before returning, and the callers
have to create