Re: [PATCH] sysfs: add filter function to groups

James Bottomley wrote:

visibility and creation are the same thing, aren't they?  An invisible
attribute doesn't appear in the sysfs directory, so it's equivalent to
the file for it not being created.

What about the case where it's visible at creation time, but then needs to be made selectively invisible later on?

That implies either a remove operation or dentry checks on each lookup?

	Jeff


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