linux-kernel - Re: [RFC RFT PATCH] ocfs2: Mark inode bad upon validation failure during read

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Message-ID: <aQS_oUDXGt_nF__d@arch-box>
Date: Fri, 31 Oct 2025 09:54:41 -0400
From: Albin Babu Varghese <albinbabuvarghese20@...il.com>
To: Heming Zhao <heming.zhao@...e.com>
Cc: Ahmet Eray Karadag <eraykrdg1@...il.com>, mark@...heh.com,
	jlbec@...lplan.org, joseph.qi@...ux.alibaba.com,
	ocfs2-devel@...ts.linux.dev, linux-kernel@...r.kernel.org,
	david.hunter.linux@...il.com, skhan@...uxfoundation.org,
	syzbot+b93b65ee321c97861072@...kaller.appspotmail.com
Subject: Re: [RFC RFT PATCH] ocfs2: Mark inode bad upon validation failure
 during read

Hi Heming,

> I support adding make_bad_inode() in ocfs2_read_inode_block_full().
> ocfs2_read_locked_inode() calls ocfs2_read_inode_block[_full] to read the inode
> from disk. However, ocfs2_read_inode_block[_full] have many callers, and in
> current code, only ocfs2_read_locked_inode() marks the inode as bad. All others
> forget to set the bad_inode.
> 
> The 'forbid' write operations when read-only mode is worth another patch, and
> I plan to create this patch. This patch adds a similar ext4_emergency_state()
> function for ocfs2.

We're working on this as part of the Linux Kernel Mentorship Program, and we'd
love to take on implementing the read-only check if it's not overly
complicated. We're just beginners, but we thought it would be a great learning
experience to work on this following the ext4 pattern you mentioned - if you
haven't already started working on it by the time you see this reply.

> Therefore, your original patch looks good to me. I will provide my Reivewed-by
> for it.

Thank you so much for your review and the Reviewed-by tag

Cheers,
	Albin