From: Christoph Hellwig <hch@infradead.org>
To: Heinz Mauelshagen <heinzm@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>,
Mikulas Patocka <mpatocka@redhat.com>,
Jens Axboe <axboe@kernel.dk>, Jooyung Han <jooyung@google.com>,
Alasdair Kergon <agk@redhat.com>,
Mike Snitzer <snitzer@kernel.org>,
zkabelac@redhat.com, dm-devel@lists.linux.dev,
linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH] the dm-loop target
Date: Tue, 4 Mar 2025 08:04:27 -0800 [thread overview]
Message-ID: <Z8cki-inrku8QIhB@infradead.org> (raw)
In-Reply-To: <CAM23Vxr=fKy-0L1R5P-5h6A95acKT_d=CC1E+TAzAs8v6q9gHw@mail.gmail.com>
On Tue, Mar 04, 2025 at 03:50:36PM +0100, Heinz Mauelshagen wrote:
> Seems to have a loop target to add respective mapped device semantics, the
> way to go is to design it using VFS API to get it upstream.
>
> Won't help the Android use case requested by Google thus they'll have to
> stick to their multi-segment linear mapped approach to achieve their
> performance goals unless they want to support dm-loop OOT to make their
> life easier on immutable file backings.
What are "the performance goals" and what is in the way of achieving
them? This thread has massively blown up but no one has even tried to
explain what the thing tries to address.
next prev parent reply other threads:[~2025-03-04 16:04 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <7d6ae2c9-df8e-50d0-7ad6-b787cb3cfab4@redhat.com>
2025-03-03 13:59 ` [PATCH] the dm-loop target Christoph Hellwig
[not found] ` <CAM23VxprhJgOPfhxQf6QNWzHd6+-ZwbjSo-oMHCD2WDQiKntMg@mail.gmail.com>
2025-03-03 15:13 ` Christoph Hellwig
2025-03-03 15:22 ` Matthew Wilcox
2025-03-03 15:31 ` Christoph Hellwig
[not found] ` <CAM23VxprSduDDK8qvLVkUt9WWmLMPFjhqKB8X4e6gw7Wv-6R2w@mail.gmail.com>
2025-03-03 17:24 ` Christoph Hellwig
[not found] ` <CAM23Vxoxyrf9nwJd1Xe8uncAPiyK8yaNZNsugwX8p=qo1n6yVg@mail.gmail.com>
2025-03-04 13:52 ` Christoph Hellwig
2025-03-03 16:16 ` Mikulas Patocka
2025-03-03 17:24 ` Christoph Hellwig
2025-03-03 21:03 ` Mikulas Patocka
2025-03-04 2:13 ` Dave Chinner
2025-03-04 11:18 ` Mikulas Patocka
2025-03-04 13:50 ` Christoph Hellwig
2025-03-05 0:01 ` Dave Chinner
2025-03-07 15:21 ` Mikulas Patocka
2025-03-08 3:49 ` Darrick J. Wong
2025-03-08 20:45 ` Mikulas Patocka
2025-03-09 0:05 ` Ming Lei
2025-03-10 11:18 ` Mikulas Patocka
2025-03-11 1:27 ` Dave Chinner
2025-03-11 10:43 ` Ming Lei
2025-03-12 2:34 ` Dave Chinner
2025-03-12 6:24 ` Christoph Hellwig
2025-03-12 8:26 ` Ming Lei
2025-03-13 1:36 ` Ming Lei
2025-03-13 16:36 ` Mikulas Patocka
2025-03-18 4:27 ` Dave Chinner
2025-03-18 7:57 ` Christoph Hellwig
2025-03-18 9:34 ` Ming Lei
2025-03-20 7:08 ` Christoph Hellwig
2025-03-20 7:41 ` Ming Lei
2025-03-20 14:22 ` Christoph Hellwig
2025-03-20 14:36 ` Ming Lei
2025-03-25 10:15 ` Dave Chinner
2025-03-25 12:23 ` Ming Lei
2025-03-09 0:16 ` Ming Lei
2025-03-10 11:20 ` Mikulas Patocka
2025-03-04 13:49 ` Christoph Hellwig
[not found] ` <CAM23Vxr=fKy-0L1R5P-5h6A95acKT_d=CC1E+TAzAs8v6q9gHw@mail.gmail.com>
2025-03-04 16:04 ` Christoph Hellwig [this message]
[not found] ` <CAM23VxqJX46DCpCiH5qxPpDLtMVg87Ba8sx55aQ4hvt-XaHzuQ@mail.gmail.com>
2025-03-04 17:17 ` Christoph Hellwig
2025-03-12 13:26 ` Kent Overstreet
2025-03-12 14:20 ` Christoph Hellwig
2025-03-12 16:09 ` Kent Overstreet
2025-03-13 12:44 ` Christoph Hellwig
2025-03-13 16:21 ` Mikulas Patocka
2025-03-13 16:33 ` Kent Overstreet
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