linux-kernel - Re: [PATCH v2 4.19 0/4] ext4: improve delalloc buffer write performance

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Message-ID: <2024072316-thirty-cytoplasm-2b81@gregkh>
Date: Tue, 23 Jul 2024 19:58:16 +0200
From: Greg KH <gregkh@...uxfoundation.org>
To: WangYuli <wangyuli@...ontech.com>
Cc: stable@...r.kernel.org, sashal@...nel.org, yi.zhang@...wei.com,
	jack@...e.cz, tytso@....edu, adilger.kernel@...ger.ca,
	linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org,
	yukuai3@...wei.com, niecheng1@...ontech.com,
	zhangdandan@...ontech.com, guanwentao@...ontech.com
Subject: Re: [PATCH v2 4.19 0/4] ext4: improve delalloc buffer write
 performance

On Sun, Jul 21, 2024 at 12:04:06AM +0800, WangYuli wrote:
> Changes since v1:
>   Fixed some formatting errors to make the patchset less confusing.
> 
> A patchset from linux-5.15 should be backported to 4.19 that can
> significantly improve ext4 fs read and write performance. Unixbench test
> results for linux-4.19.318 on Phytium D2000 CPU are shown below.

Also, this looks like a performance issue, why not just use a newer
kernel (i.e. 5.15.y) to get the benefit of this, and many other,
increased performance fixes?  4.19.y is only going to be alive for a few
more months, if you haven't already planned to move off of it yet, you
need to do so now.

thanks,

greg k-h