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

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Message-ID: <f0c1aa0f-1b2d-7237-5ee4-de5961364cec@nfschina.com>
Date: Thu, 16 Jan 2025 18:12:02 +0800
From: Su Hui <suhui@...china.com>
To: Greg KH <gregkh@...uxfoundation.org>
Cc: tj@...nel.org, linux-kernel@...r.kernel.org,
 kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] kernfs: Convert idr to xarray


On 2025/1/16 17:54, Greg KH wrote:
> 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.
Sorry for the poor information, I will collect more information and data 
later.
Thanks for your suggestion.

Su Hui