Re: [PATCH 0/7] Enable UFS provisioning via Linux

From: Bart Van Assche
Date: Tue Jun 12 2018 - 16:11:29 EST

On Tue, 2018-06-12 at 12:42 -0700, Evan Green wrote:
> What I _want_ to do is basically create N sysfs groups, where each
> group points to the same array of attributes. Then in the show/store
> methods, look up which group I'm in and use that as an index. But the
> show/store functions only pass the attributes themselves, and there
> seems to be no way for me to get the parent node.

The first argument that is passed to sysfs show and store methods is
a kobject pointer. Have you considered to access kobject.parent from
inside the show/store methods? From fs/sysfs/file.c:

if (ops->show) {
count = ops->show(kobj, of->kn->priv, buf);
if (count < 0)
return count;