From: Zorro Lang <zorro.lang@gmail.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: wqu@suse.com, anand.jain@oracle.com, fstests@vger.kernel.org,
linux-f2fs-devel@lists.sourceforge.net
Subject: Re: [f2fs-dev] [PATCH] generic/050: handle f2fs as nojournal filesystem
Date: Fri, 17 Apr 2026 00:47:09 +0800 [thread overview]
Message-ID: <aeER8AIJZecuTLIc@zlang-mailbox> (raw)
In-Reply-To: <ad3zThMKaWZ65XE2@infradead.org>
On Tue, Apr 14, 2026 at 12:57:02AM -0700, Christoph Hellwig wrote:
> On Fri, Apr 10, 2026 at 01:18:20PM +0000, Jan Prusakowski wrote:
> > F2FS uses a checkpoint mechanism for metadata consistency rather than a
> > traditional journal. Roll-forward recovery is only needed if there are
> > fsync'd files since the last checkpoint.
> >
> > In this test case, files are created without fsync, so there is no
> > roll-forward data to replay during mount.
> >
> > Therefore, F2FS does not need to write to the device to recover, and
> > successfully mounts on the read-only block device. Thus, it should be
> > treated as nojournal in this case.
>
> This looks ok, but I always wonder if we want an opt-in for this
> "journaling" behavior and/or define it clear in common/.
_has_traditional_journal ? _has_journal_replay ? :-D
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next prev parent reply other threads:[~2026-04-16 16:47 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-10 13:18 [f2fs-dev] [PATCH] generic/050: handle f2fs as nojournal filesystem Jan Prusakowski via Linux-f2fs-devel
2026-04-14 7:57 ` Christoph Hellwig
2026-04-16 16:47 ` Zorro Lang [this message]
2026-04-16 16:44 ` Zorro Lang
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