[PATCH 1/3] um: Monitor error events in IRQ controller

[Johannes Berg]

On Mon, 2020-12-07 at 17:19 +0000, anton.ivanov at cambridgegreys.com
wrote:
> From: Anton Ivanov <anton.ivanov at cambridgegreys.com>
> 
> Ensure that file closes, connection closes, etc are propagated
> as interrupts in the interrupt controller.
> 
> Fixes: ff6a17989c08 ("Epoll based IRQ controller")
> Signed-off-by: Anton Ivanov <anton.ivanov at cambridgegreys.com>
> ---
>  arch/um/os-Linux/irq.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/um/os-Linux/irq.c b/arch/um/os-Linux/irq.c
> index d508310ee5e1..f1732c308c61 100644
> --- a/arch/um/os-Linux/irq.c
> +++ b/arch/um/os-Linux/irq.c
> @@ -48,7 +48,7 @@ int os_epoll_triggered(int index, int events)
>  int os_event_mask(int irq_type)
>  {
>  	if (irq_type == IRQ_READ)
> -		return EPOLLIN | EPOLLPRI;
> +		return EPOLLIN | EPOLLPRI | EPOLLERR | EPOLLHUP | EPOLLRDHUP;
>  	if (irq_type == IRQ_WRITE)
>  		return EPOLLOUT;

Why not monitor it also for write?

johannes