From: Eric Biggers <ebiggers@kernel.org>
To: Boris Burkov <boris@bur.io>
Cc: linux-btrfs@vger.kernel.org, linux-fscrypt@vger.kernel.org,
kernel-team@fb.com
Subject: Re: [PATCH v4 1/5] btrfs: add compat_flags to btrfs_inode_item
Date: Tue, 25 May 2021 11:12:21 -0700 [thread overview]
Message-ID: <YK0+BU9twmldQ9Q0@sol.localdomain> (raw)
In-Reply-To: <6ed83a27f88e18f295f7d661e9c87e7ec7d33428.1620241221.git.boris@bur.io>
On Wed, May 05, 2021 at 12:20:39PM -0700, Boris Burkov wrote:
> The tree checker currently rejects unrecognized flags when it reads
> btrfs_inode_item. Practically, this means that adding a new flag makes
> the change backwards incompatible if the flag is ever set on a file.
>
> Take up one of the 4 reserved u64 fields in the btrfs_inode_item as a
> new "compat_flags". These flags are zero on inode creation in btrfs and
> mkfs and are ignored by an older kernel, so it should be safe to use
> them in this way.
>
> Signed-off-by: Boris Burkov <boris@bur.io>
This patchset doesn't have a cover letter anymore for some reason.
Also, please mention where this patchset applies to. I tried mainline and
btrfs/for-next, but neither works.
- Eric
next prev parent reply other threads:[~2021-05-25 18:12 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <cover.1620241221.git.boris@bur.io>
2021-05-05 19:20 ` [PATCH v4 1/5] btrfs: add compat_flags to btrfs_inode_item Boris Burkov
2021-05-11 19:11 ` David Sterba
2021-05-17 21:48 ` David Sterba
2021-05-19 21:45 ` Boris Burkov
2021-06-07 21:43 ` David Sterba
2021-05-25 18:12 ` Eric Biggers [this message]
2021-06-07 21:10 ` David Sterba
2021-05-05 19:20 ` [PATCH v4 2/5] btrfs: initial fsverity support Boris Burkov
2021-05-06 0:09 ` kernel test robot
2021-05-11 19:20 ` David Sterba
2021-05-11 20:31 ` David Sterba
2021-05-11 21:52 ` Boris Burkov
2021-05-12 17:10 ` David Sterba
2021-05-13 19:19 ` Boris Burkov
2021-05-17 21:40 ` David Sterba
2021-05-12 17:34 ` David Sterba
2021-05-05 19:20 ` [PATCH v4 3/5] btrfs: check verity for reads of inline extents and holes Boris Burkov
2021-05-12 17:57 ` David Sterba
2021-05-12 18:25 ` Boris Burkov
2021-05-05 19:20 ` [PATCH v4 4/5] btrfs: fallback to buffered io for verity files Boris Burkov
2021-05-05 19:20 ` [PATCH v4 5/5] btrfs: verity metadata orphan items Boris Burkov
2021-05-12 17:48 ` David Sterba
2021-05-12 18:08 ` Boris Burkov
2021-05-12 23:36 ` David Sterba
2021-05-05 19:20 [PATCH v4 0/5] btrfs: support fsverity Boris Burkov
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