Re: [PATCH 5.15 v2] gve: Fixes for napi_poll when budget is 0

[Greg KH <gregkh@linuxfoundation.org>]

On Tue, Dec 10, 2024 at 11:59:14PM +0000, Ziwei Xiao wrote:
> Netpoll will explicitly pass the polling call with a budget of 0 to
> indicate it's clearing the Tx path only. For the gve_rx_poll and
> gve_xdp_poll, they were mistakenly taking the 0 budget as the indication
> to do all the work. Add check to avoid the rx path and xdp path being
> called when budget is 0. And also avoid napi_complete_done being called
> when budget is 0 for netpoll.
> 
> The original fix was merged here:
> https://lore.kernel.org/r/20231114004144.2022268-1-ziweixiao@google.com
> Resend it since the original one was not cleanly applied to 5.15 kernel.
> 
> commit 278a370c1766 ("gve: Fixes for napi_poll when budget is 0")
> 
> Fixes: f5cedc84a30d ("gve: Add transmit and receive support")
> Signed-off-by: Ziwei Xiao <ziweixiao@google.com>
> Reviewed-by: Praveen Kaligineedi <pkaligineedi@google.com>
> Signed-off-by: Praveen Kaligineedi <pkaligineedi@google.com>
> ---
>  Changes in v2:
>  * Add the original git commit id

In the future, please add it in a way that we can figure it out (see the
hundreds of examples on the mailing list for how it is done.)

thanks,

greg k-h