From: Christoph Hellwig <hch@infradead.org>
To: Vyacheslav Kovalevsky <slava.kovalevskiy.2014@gmail.com>
Cc: viro@zeniv.linux.org.uk, brauner@kernel.org,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-btrfs@vger.kernel.org, linux-ext4@vger.kernel.org
Subject: Re: File name is not persisted if opened with O_SYNC and O_TRUNC flags
Date: Thu, 12 Feb 2026 23:33:40 -0800 [thread overview]
Message-ID: <aY7T1LS5vnZI-ZxE@infradead.org> (raw)
In-Reply-To: <4b207a36-5789-41d2-ac17-df86d4cde6da@gmail.com>
On Thu, Feb 12, 2026 at 02:51:47PM +0300, Vyacheslav Kovalevsky wrote:
> Detailed description
> ====================
>
> Hello, there seems to be an issue with O_SYNC flag when used together with
> O_TRUNC on various file systems.
> Opening a file with O_SYNC (or using fsync(fd)) should persist directory
> entry.
No, it should not. I'm not sure who hallucinated, but O_SYNC has always
always applied to persistency semantics after writes and nothing else.
next prev parent reply other threads:[~2026-02-13 7:33 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-12 11:51 File name is not persisted if opened with O_SYNC and O_TRUNC flags Vyacheslav Kovalevsky
2026-02-13 7:33 ` Christoph Hellwig [this message]
2026-02-13 10:25 ` Vyacheslav Kovalevsky
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