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Date: Tue, 23 Nov 2021 18:49:06 -0800 From: Dan Williams <dan.j.williams@...el.com> To: Christoph Hellwig <hch@....de> Cc: Mike Snitzer <snitzer@...hat.com>, Ira Weiny <ira.weiny@...el.com>, device-mapper development <dm-devel@...hat.com>, linux-xfs <linux-xfs@...r.kernel.org>, Linux NVDIMM <nvdimm@...ts.linux.dev>, linux-s390 <linux-s390@...r.kernel.org>, linux-fsdevel <linux-fsdevel@...r.kernel.org>, linux-erofs@...ts.ozlabs.org, linux-ext4 <linux-ext4@...r.kernel.org>, virtualization@...ts.linux-foundation.org Subject: Re: [PATCH 23/29] xfs: use IOMAP_DAX to check for DAX mappings On Tue, Nov 9, 2021 at 12:34 AM Christoph Hellwig <hch@....de> wrote: > > Use the explicit DAX flag instead of checking the inode flag in the > iomap code. It's not immediately clear to me why this is a net benefit, are you anticipating inode-less operations? With reflink and multi-inode operations a single iomap flag seems insufficient, no?
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