From: Eric Biggers <ebiggers@kernel.org>
To: Andrey Albershteyn <aalbersh@redhat.com>
Cc: linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: Re: [RFC PATCH 00/11] fs-verity support for XFS
Date: Tue, 13 Dec 2022 12:50:28 -0800 [thread overview]
Message-ID: <Y5jllLwXlfB7BzTz@sol.localdomain> (raw)
In-Reply-To: <20221213172935.680971-1-aalbersh@redhat.com>
On Tue, Dec 13, 2022 at 06:29:24PM +0100, Andrey Albershteyn wrote:
> Not yet implemented:
> - No pre-fetching of Merkle tree pages in the
> read_merkle_tree_page()
This would be helpful, but not essential.
> - No marking of already verified Merkle tree pages (each read, the
> whole tree is verified).
This is essential to have, IMO.
You *could* do what btrfs does, where it caches the Merkle tree pages in the
inode's page cache past i_size, even though btrfs stores the Merkle tree
separately from the file data on-disk.
However, I'd guess that the other XFS developers would have an adversion to that
approach, even though it would not affect the on-disk storage.
The alternatives would be to create a separate in-memory-only inode for the
cache, or to build a custom cache with its own shrinker.
- Eric
next prev parent reply other threads:[~2022-12-13 20:50 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-13 17:29 [RFC PATCH 00/11] fs-verity support for XFS Andrey Albershteyn
2022-12-13 17:29 ` [RFC PATCH 01/11] xfs: enable large folios in xfs_setup_inode() Andrey Albershteyn
2022-12-14 0:53 ` Dave Chinner
2022-12-13 17:29 ` [RFC PATCH 02/11] pagemap: add mapping_clear_large_folios() wrapper Andrey Albershteyn
2022-12-13 17:55 ` Matthew Wilcox
2022-12-13 19:33 ` Eric Biggers
2022-12-13 21:10 ` Dave Chinner
2022-12-14 6:52 ` Eric Biggers
2022-12-14 8:12 ` Dave Chinner
2022-12-13 21:08 ` Dave Chinner
2023-01-09 16:34 ` Andrey Albershteyn
2022-12-13 17:29 ` [RFC PATCH 03/11] xfs: add attribute type for fs-verity Andrey Albershteyn
2022-12-13 17:43 ` Eric Sandeen
2022-12-14 1:03 ` Dave Chinner
2023-01-09 16:37 ` Andrey Albershteyn
2022-12-13 17:29 ` [RFC PATCH 04/11] xfs: add fs-verity ro-compat flag Andrey Albershteyn
2022-12-14 1:06 ` Dave Chinner
2022-12-13 17:29 ` [RFC PATCH 05/11] xfs: add inode on-disk VERITY flag Andrey Albershteyn
2022-12-14 1:29 ` Dave Chinner
2023-01-09 16:51 ` Andrey Albershteyn
2022-12-13 17:29 ` [RFC PATCH 06/11] xfs: initialize fs-verity on file open and cleanup on inode destruction Andrey Albershteyn
2022-12-14 1:35 ` Dave Chinner
2022-12-14 5:25 ` Eric Biggers
2022-12-14 8:18 ` Dave Chinner
2022-12-13 17:29 ` [RFC PATCH 07/11] xfs: disable direct read path for fs-verity sealed files Andrey Albershteyn
2022-12-14 2:07 ` Dave Chinner
2022-12-14 5:44 ` Eric Biggers
2022-12-23 16:18 ` Christoph Hellwig
2023-01-09 17:23 ` Andrey Albershteyn
2022-12-13 17:29 ` [RFC PATCH 08/11] xfs: don't enable large folios on fs-verity sealed inode Andrey Albershteyn
2022-12-14 2:07 ` Dave Chinner
2022-12-13 17:29 ` [RFC PATCH 09/11] iomap: fs-verity verification on page read Andrey Albershteyn
2022-12-13 19:02 ` Eric Biggers
2023-01-09 16:58 ` Andrey Albershteyn
2022-12-14 5:43 ` Dave Chinner
2022-12-13 17:29 ` [RFC PATCH 10/11] xfs: add fs-verity support Andrey Albershteyn
2022-12-13 19:08 ` Eric Biggers
2022-12-13 19:22 ` Darrick J. Wong
2022-12-13 20:13 ` Eric Biggers
2022-12-13 20:33 ` Dave Chinner
2022-12-13 20:39 ` Eric Biggers
2022-12-13 21:40 ` Dave Chinner
2022-12-14 7:58 ` Dave Chinner
2022-12-13 17:29 ` [RFC PATCH 11/11] xfs: add fs-verity ioctls Andrey Albershteyn
2022-12-13 20:50 ` Eric Biggers [this message]
2022-12-13 22:11 ` [RFC PATCH 00/11] fs-verity support for XFS Dave Chinner
2022-12-14 6:31 ` Eric Biggers
2022-12-14 23:06 ` Dave Chinner
2022-12-15 6:47 ` Eric Biggers
2022-12-15 20:57 ` Dave Chinner
2022-12-16 5:04 ` Eric Biggers
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