Re: [PATCH bpf-next 1/4] xsk: avoid store-tearing when assigning queues

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On 22 Aug 2019, at 2:13, Björn Töpel wrote:

> From: Björn Töpel <bjorn.topel@xxxxxxxxx>
>
> Use WRITE_ONCE when doing the store of tx, rx, fq, and cq, to avoid
> potential store-tearing. These members are read outside of the control
> mutex in the mmap implementation.
>
> Fixes: 37b076933a8e ("xsk: add missing write- and data-dependency barrier")
> Signed-off-by: Björn Töpel <bjorn.topel@xxxxxxxxx>

Acked-by: Jonathan Lemon <jonathan.lemon@xxxxxxxxx>



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