Re: [PATCH 0/5] samples/kernfs: Add a pseudo-filesystem to demonstrate kernfs usage

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On Tue, Jan 28, 2025 at 06:29:57PM -0500, Steven Rostedt wrote:
> What I did for eventfs, and what I believe kernfs does, is to create a
> small descriptor to represent the control data and reference them like what
> you would have on disk. That is, the control elements (like an trace event
> descriptor) is really what is on "disk". When someone does an "ls" to the
> pseudo file system, there needs to be a way for the VFS layer to query the
> control structures like how a normal file system would query that data
> stored on disk, and then let the VFS layer create the dentry and inodes
> when referenced, and more importantly, free them when they are no longer
> referenced and there's memory pressure.

Yeap, that's exactly what kernfs does.

Thanks.

-- 
tejun




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