From: Matthew Wilcox <willy@infradead.org>
To: Vlastimil Babka <vbabka@suse.cz>
Cc: Matt Fleming <matt@readmodwrite.com>,
adilger.kernel@dilger.ca, akpm@linux-foundation.org,
linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
luka.2016.cs@gmail.com, tytso@mit.edu,
Barry Song <baohua@kernel.org>,
kernel-team@cloudflare.com, Miklos Szeredi <miklos@szeredi.hu>,
Amir Goldstein <amir73il@gmail.com>,
Dave Chinner <david@fromorbit.com>,
Qi Zheng <zhengqi.arch@bytedance.com>,
Roman Gushchin <roman.gushchin@linux.dev>,
Muchun Song <muchun.song@linux.dev>,
"James E.J. Bottomley" <James.Bottomley@hansenpartnership.com>
Subject: Re: Potential Linux Crash: WARNING in ext4_dirty_folio in Linux kernel v6.13-rc5
Date: Fri, 4 Apr 2025 14:50:57 +0100 [thread overview]
Message-ID: <Z-_jwWm5hsEp51h1@casper.infradead.org> (raw)
In-Reply-To: <aadb65f3-7656-4051-99a4-909fc1f61fc7@suse.cz>
On Fri, Apr 04, 2025 at 11:09:37AM +0200, Vlastimil Babka wrote:
> On 4/3/25 19:12, Matthew Wilcox wrote:
> > Ideas still on the table:
> >
> > - Convert all filesystems to use the XFS inode management scheme.
> > Nobody is thrilled by this large amount of work.
> > - Find a simpler version of the XFS scheme to implement for other
> > filesystems.
>
> I don't know the XFS scheme, but this situation seems like a match for the
> mempool semantics? (I assume it's also a lot of work to implement)
Ah; no. evicting an inode may consume an arbitrary amount of memory,
run transactions, wait for I/O, etc, etc. We really shouldn't be doing
it as part of memory reclaim. I should probably have said that as part
of this writeup, so thanks for bringing it up.
next prev parent reply other threads:[~2025-04-04 13:51 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CALm_T+2cEDUJvjh6Lv+6Mg9QJxGBVAHu-CY+okQgh-emWa7-1A@mail.gmail.com>
2025-03-06 5:13 ` Potential Linux Crash: WARNING in ext4_dirty_folio in Linux kernel v6.13-rc5 Matthew Wilcox
2025-03-26 10:59 ` Matt Fleming
2025-04-03 12:29 ` Matt Fleming
2025-04-03 12:58 ` Vlastimil Babka
2025-04-03 14:33 ` Michal Hocko
2025-04-03 17:12 ` Matthew Wilcox
2025-04-03 19:32 ` James Bottomley
2025-04-04 9:09 ` Vlastimil Babka
2025-04-04 13:50 ` Matthew Wilcox [this message]
2025-04-07 23:00 ` Dave Chinner
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