linux-kernel - Re: [PATCH] kernfs: Convert idr to xarray

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Message-ID: <2025011629-lilac-prozac-1023@gregkh>
Date: Thu, 16 Jan 2025 10:54:00 +0100
From: Greg KH <gregkh@...uxfoundation.org>
To: Su Hui <suhui@...china.com>
Cc: tj@...nel.org, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] kernfs: Convert idr to xarray

On Thu, Jan 16, 2025 at 04:48:02PM +0800, Su Hui wrote:
> IDR is deprecated. Use xarray instead.

Why?  What helped by doing this?  Is it faster?  Slower?  Less memory?
More memory?  Where did the lock go?

You need to provide so much more information here than you provided in
order for us to be able to even consider reviewing this change.  Please
read the documentation for how to write a good changelog text, that is
very important, ESPECIALLY when dealing with core kernel bits.

thanks,

greg k-h