Re: [PATCH bpf-next V4] xsk: allow remap of fill and/or completion rings

Hello:

This patch was applied to bpf/bpf-next.git (master)
by Alexei Starovoitov [off-list ref]:

On Fri, 24 Mar 2023 10:02:22 +0000 you wrote:

The remap of fill and completion rings was frowned upon as they
control the usage of UMEM which does not support concurrent use.
At the same time this would disallow the remap of these rings
into another process.

A possible use case is that the user wants to transfer the socket/
UMEM ownership to another process (via SYS_pidfd_getfd) and so
would need to also remap these rings.

[...]

Here is the summary with links:
  - [bpf-next,V4] xsk: allow remap of fill and/or completion rings
    https://git.kernel.org/bpf/bpf-next/c/5f5a7d8d8bd4

You are awesome, thank you!
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