Re: [PATCH bpf-next v3 2/4] libfs: support RENAME_EXCHANGE in simple_rename()

[Daniel Borkmann <daniel@xxxxxxxxxxxxx>]

On 11/2/21 10:25 AM, Miklos Szeredi wrote:
> On Thu, 28 Oct 2021 at 11:48, Lorenz Bauer <lmb@xxxxxxxxxxxxxx> wrote:
> > Allow atomic exchange via RENAME_EXCHANGE when using simple_rename.
> > This affects binderfs, ramfs, hubetlbfs and bpffs.
>
> Ramfs and hugetlbfs are generic enough; those seem safe.
>
> Binderfs: I have no idea what this does; binderfs_rename() should
> probably error out on RENAME_EXCHANGE for now, or an explicit ack from
> the maintainers.

Thanks for the review, Miklos! Adding Christian to Cc wrt binderfs ... full context
for all patches: https://lore.kernel.org/bpf/20211028094724.59043-1-lmb@xxxxxxxxxxxxxx/

> Bpffs is your baby...
>
> Thanks,
> Miklos