linux-kernel - Re: [PATCH] erofs: correct FSDAX detection

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Message-ID: <b8b27003-2366-41c9-871f-6e04ea74c309@kernel.org>
Date: Mon, 24 Nov 2025 08:44:18 +0800
From: Chao Yu <chao@...nel.org>
To: Gao Xiang <hsiangkao@...ux.alibaba.com>, linux-erofs@...ts.ozlabs.org
Cc: chao@...nel.org, LKML <linux-kernel@...r.kernel.org>,
 linux-fsdevel@...r.kernel.org,
 syzbot+31b8fb02cb8a25bd5e78@...kaller.appspotmail.com,
 Yuezhang Mo <Yuezhang.Mo@...y.com>
Subject: Re: [PATCH] erofs: correct FSDAX detection

On 11/17/2025 7:57 PM, Gao Xiang wrote:
> The detection of the primary device is skipped incorrectly
> if the multiple or flattened feature is enabled.
> 
> It also fixes the FSDAX misdetection for non-block extra blobs.
> 
> Fixes: c6993c4cb918 ("erofs: Fallback to normal access if DAX is not supported on extra device")
> Reported-by: syzbot+31b8fb02cb8a25bd5e78@...kaller.appspotmail.com
> Closes: https://lore.kernel.org/r/691af9f6.a70a0220.3124cb.0097.GAE@google.com
> Cc: Yuezhang Mo <Yuezhang.Mo@...y.com>
> Signed-off-by: Gao Xiang <hsiangkao@...ux.alibaba.com>

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

Thanks,