linux-ext4 - Re: [PATCH v3 22/24] ext4: support verifying data from large folios with fs-verity

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <29aebfa7-99ed-42e7-b94e-e6c15223aa8c@huaweicloud.com>
Date: Wed, 12 Nov 2025 14:54:18 +0800
From: Zhang Yi <yi.zhang@...weicloud.com>
To: libaokun@...weicloud.com, linux-ext4@...r.kernel.org
Cc: tytso@....edu, adilger.kernel@...ger.ca, jack@...e.cz,
 linux-kernel@...r.kernel.org, kernel@...kajraghav.com, mcgrof@...nel.org,
 ebiggers@...nel.org, willy@...radead.org, yangerkun@...wei.com,
 chengzhihao1@...wei.com, libaokun1@...wei.com
Subject: Re: [PATCH v3 22/24] ext4: support verifying data from large folios
 with fs-verity

On 11/11/2025 10:26 PM, libaokun@...weicloud.com wrote:
> From: Baokun Li <libaokun1@...wei.com>
> 
> Eric Biggers already added support for verifying data from large folios
> several years ago in commit 5d0f0e57ed90 ("fsverity: support verifying
> data from large folios").
> 
> With ext4 now supporting large block sizes, the fs-verity tests
> `kvm-xfstests -c ext4/64k -g verity -x encrypt` pass without issues.
> 
> Therefore, remove the restriction and allow large folios to be enabled
> together with fs-verity.
> 
> Cc: Eric Biggers <ebiggers@...nel.org>
> Signed-off-by: Baokun Li <libaokun1@...wei.com>

Looks good to me.

Reviewed-by: Zhang Yi <yi.zhang@...wei.com>

> ---
>  fs/ext4/inode.c | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
> index 613a989bf750..7b979e64f481 100644
> --- a/fs/ext4/inode.c
> +++ b/fs/ext4/inode.c
> @@ -5152,8 +5152,6 @@ static bool ext4_should_enable_large_folio(struct inode *inode)
>  
>  	if (!S_ISREG(inode->i_mode))
>  		return false;
> -	if (ext4_has_feature_verity(sb))
> -		return false;
>  	if (ext4_has_feature_encrypt(sb))
>  		return false;
>