linux-kernel - Re: [f2fs-dev] [PATCH v3] f2fs: show the list of donation files

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Message-ID: <e7a7d935-a43e-434e-9fd7-ba145255d3f5@kernel.org>
Date: Sat, 16 Aug 2025 15:05:38 +0800
From: Chao Yu <chao@...nel.org>
To: Jaegeuk Kim <jaegeuk@...nel.org>, linux-kernel@...r.kernel.org,
 linux-f2fs-devel@...ts.sourceforge.net
Cc: chao@...nel.org
Subject: Re: [f2fs-dev] [PATCH v3] f2fs: show the list of donation files

On 2025/8/16 00:20, Jaegeuk Kim via Linux-f2fs-devel wrote:
> This patch introduces a proc entry to show the currently enrolled donation
> files.
> 
> - "File path" indicates a file.
> - "Status"
>   a. "Donated" means the file is registed in the donation list by
>      fadvise(offset, length, POSIX_FADV_NOREUSE)
>   b. "Evicted" means the donated pages were reclaimed.
> - "Offset (kb)" and "Length (kb) show the registered donation range.
> - "Cached pages (kb)" shows the amount of cached pages in the inode page cache.
> 
> For example,
> 
> Donation List
>   # of files  : 2
>   File path                                              Status     Offset (kb)     Length (kb)    Cached pages (kb)
> ---
>   /local/tmp/test2                                      Donated               0         1048576              2097152
>   /local/tmp/test                                       Evicted               0         1048576              1048576
> 
> Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>

Reviewed-by: Chao Yu <chao@...nel.org>

Thanks,