Re: [PATCH v6 0/4] OPENAT2_REGULAR flag support for openat2

[Dorjoy Chowdhury]

On Thu, Apr 16, 2026 at 7:07 PM Christian Brauner <brauner@xxxxxxxxxx> wrote:
>
> On Sat, 28 Mar 2026 23:22:21 +0600, Dorjoy Chowdhury wrote:
> > I came upon this "Ability to only open regular files" uapi feature suggestion
> > from https://uapi-group.org/kernel-features/#ability-to-only-open-regular-files
> > and thought it would be something I could do as a first patch and get to
> > know the kernel code a bit better.
> >
> > The following filesystems have been tested by building and booting the kernel
> > x86 bzImage in a Fedora 43 VM in QEMU. I have tested with OPENAT2_REGULAR that
> > regular files can be successfully opened and non-regular files (directory, fifo etc)
> > return -EFTYPE.
> > - btrfs
> > - NFS (loopback)
> > - SMB (loopback)
> >
> > [...]
>
> - I've added an explanation why OPENAT2_REGULAR is only needed for some
>   ->atomic_open() implementers but not others. What I don't like is that
>   we need all that custom handling in there but it's managable.
>
> - I dropped the topmost style conversions. They really don't belong
>   there and if we switch to something better we should use (1 << <nr>).
>
> - I split the EFTYPE errno introduction into a separate patch.
>
> ---

Thanks for fixing up and picking this one up!

>
> Applied to the vfs-7.2.openat.regular branch of the vfs/vfs.git tree.
> Patches in the vfs-7.2.openat.regular branch should appear in linux-next soon.
>

I don't see a vfs-7.2.openat.regular branch in vfs/vfs.git tree in
git.kernel.org.  Maybe this hasn't been pushed yet?

> Please report any outstanding bugs that were missed during review in a
> new review to the original patch series allowing us to drop it.
>
> It's encouraged to provide Acked-bys and Reviewed-bys even though the
> patch has now been applied. If possible patch trailers will be updated.
>
> Note that commit hashes shown below are subject to change due to rebase,
> trailer updates or similar. If in doubt, please check the listed branch.
>
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git
> branch: master
>

I guess you wanted to mean vfs-7.2.openat.regular here?

Regards,
Dorjoy