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Date: Tue, 13 Feb 2024 07:56:36 +0100
From: Christoph Hellwig <hch@lst.de>
To: John Garry <john.g.garry@oracle.com>
Cc: "Darrick J. Wong" <djwong@kernel.org>, hch@lst.de,
	viro@zeniv.linux.org.uk, brauner@kernel.org, dchinner@redhat.com,
	jack@suse.cz, chandan.babu@oracle.com, martin.petersen@oracle.com,
	linux-kernel@vger.kernel.org, linux-xfs@vger.kernel.org,
	linux-fsdevel@vger.kernel.org, tytso@mit.edu, jbongio@google.com,
	ojaswin@linux.ibm.com
Subject: Re: [PATCH 2/6] fs: Add FS_XFLAG_ATOMICWRITES flag
Message-ID: <20240213065636.GB23539@lst.de>
References: <20240124142645.9334-1-john.g.garry@oracle.com> <20240124142645.9334-3-john.g.garry@oracle.com> <20240202175701.GI6184@frogsfrogsfrogs> <28399201-e99f-4b03-b2c0-b66cc0d21ce6@oracle.com>
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On Mon, Feb 05, 2024 at 12:58:30PM +0000, John Garry wrote:
> To me that sounds like "try to use DAX for IO, and, if not possible, fall 
> back on some other method" - is that reality of what that flag does?

Yes.  Of course for a fallback on XFS we need Darrick's swapext log
item.  Which would be good to have..