linux-ext4 - Re: [PATCH v4 3/3] ext4: add check pending tree when evict inode

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Message-ID: <Y5LQCPyJyg/pY2PJ@mit.edu>
Date:   Fri, 9 Dec 2022 01:04:56 -0500
From:   "Theodore Ts'o" <tytso@....edu>
To:     Ye Bin <yebin@...weicloud.com>
Cc:     adilger.kernel@...ger.ca, linux-ext4@...r.kernel.org,
        linux-kernel@...r.kernel.org, jack@...e.cz,
        Ye Bin <yebin10@...wei.com>,
        syzbot+05a0f0ccab4a25626e38@...kaller.appspotmail.com
Subject: Re: [PATCH v4 3/3] ext4: add check pending tree when evict inode

On Thu, Dec 08, 2022 at 11:34:26AM +0800, Ye Bin wrote:
> 
> Above issue fixed by
> commit 1b8f787ef547 ("ext4: fix warning in 'ext4_da_release_space'")
> in this scene. To make things better add check pending tree when evict
> inode.
> According to Eric Whitney's suggestion, bigalloc + inline is still in
> development so we just add test for this situation, there isn't need to
> add code to free pending tree entry.

The i_pending_tree is an in-memory data structure, and so it's not
appropriate to call ext4_error(), because there will be nothing for
fsck to fix.

If you really want to a bug to be noticed, you could use a ext4_msg
plus a WARN_ON(); but an ext4_error() is really not appropriate.

Cheers,

					- Ted