From: Keith Busch <kbusch@kernel.org>
To: John Garry <john.g.garry@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>,
Christoph Hellwig <hch@infradead.org>,
"Darrick J. Wong" <djwong@kernel.org>,
linux-fsdevel@vger.kernel.org, linux-xfs@vger.kernel.org,
linux-block@vger.kernel.org, linux-nvme@lists.infradead.org
Subject: Re: Do we need an opt-in for file systems use of hw atomic writes?
Date: Thu, 21 Aug 2025 08:01:34 -0600 [thread overview]
Message-ID: <aKcmvfECWdv6CedK@kbusch-mbp> (raw)
In-Reply-To: <bd7b1eea-18bc-431e-bc29-42b780ff3c31@oracle.com>
On Tue, Aug 19, 2025 at 12:42:01PM +0100, John Garry wrote:
>
> If we always ignore AWUPF, I fear that lots of sound NVMe implementations
> will be excluded from HW atomics.
It's not that they're excluded from HW atomics. They're just excluded
from the block layer's attributes and guard rails. People were using
NVMe atomics long before those block layer features, at least.
next prev parent reply other threads:[~2025-08-21 14:01 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-14 13:17 Do we need an opt-in for file systems use of hw atomic writes? Christoph Hellwig
2025-07-14 13:24 ` Theodore Ts'o
2025-07-14 13:30 ` Christoph Hellwig
2025-07-14 16:04 ` Darrick J. Wong
2025-07-15 6:00 ` Christoph Hellwig
2025-07-15 3:22 ` Martin K. Petersen
2025-07-15 6:00 ` Christoph Hellwig
2025-07-15 12:45 ` Martin K. Petersen
2025-07-14 13:39 ` John Garry
2025-07-14 13:50 ` Christoph Hellwig
2025-07-14 15:53 ` John Garry
2025-07-15 6:02 ` Christoph Hellwig
2025-07-15 8:42 ` John Garry
2025-07-15 9:03 ` Christoph Hellwig
2025-08-19 11:42 ` John Garry
2025-08-19 13:39 ` Christoph Hellwig
2025-08-19 14:36 ` John Garry
2025-08-19 14:43 ` Darrick J. Wong
2025-08-19 14:45 ` Christoph Hellwig
2025-08-21 14:01 ` Keith Busch [this message]
2025-07-15 10:02 ` Christian Brauner
2025-07-15 11:29 ` Christoph Hellwig
2025-07-15 12:20 ` Christian Brauner
2025-07-15 11:58 ` Theodore Ts'o
2025-07-14 20:53 ` Dave Chinner
2025-07-15 6:05 ` Christoph Hellwig
2025-07-15 20:56 ` Keith Busch
2025-07-16 5:50 ` Nilay Shroff
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