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Date:   Tue, 3 Aug 2021 09:42:40 -0700
From:   "Darrick J. Wong" <djwong@kernel.org>
To:     Eric Biggers <ebiggers@kernel.org>
Cc:     Matthew Wilcox <willy@infradead.org>,
        Christoph Hellwig <hch@infradead.org>,
        Gao Xiang <hsiangkao@linux.alibaba.com>,
        Andreas Gruenbacher <agruenba@redhat.com>,
        linux-fsdevel <linux-fsdevel@vger.kernel.org>,
        xfs <linux-xfs@vger.kernel.org>
Subject: Re: iomap 5.15 branch construction ...
Message-ID: <20210803164240.GC3601405@magnolia>
References: <20210802221114.GG3601466@magnolia>
 <YQhzDPl13/Kl4JdQ@gmail.com>
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On Mon, Aug 02, 2021 at 03:34:52PM -0700, Eric Biggers wrote:
> On Mon, Aug 02, 2021 at 03:11:14PM -0700, Darrick J. Wong wrote:
> > 6. Earlier, Eric Biggers had a patchset that made some iomap changes
> > ahead of porting f2fs to use directio.  I /think/ those changes were
> > dropped in the latest submission because the intended use of those
> > changes (counters of the number of pages undergoing reads or writes,
> > iirc?) has been replaced with something simpler.  IOWs, f2fs doesn't
> > need any iomap changes for 5.15, right?
> 
> Converting f2fs to use iomap for direct I/O doesn't require any iomap changes.
> You might be referring to
> https://lkml.kernel.org/r/20210604210908.2105870-7-satyat@google.com
> ("iomap: support direct I/O with fscrypt using blk-crypto"), which will be
> needed to support direct I/O on encrypted files.  Direct I/O support on
> encrypted files will be a new feature, and it's being held up for other reasons.
> So there's nothing for you to do for 5.15.  (And separately, using iomap for
> direct I/O in f2fs is being held up by existing f2fs direct I/O bugs.)

Ok, thank you for the update!

--D

> 
> - Eric