Re: [PATCH v5 2/2] pipe: use __pipe_{lock,unlock} instead of spinlock

[David Howells <dhowells@xxxxxxxxxx>]

Hongchen Zhang <zhanghongchen@xxxxxxxxxxx> wrote:

> -	spin_lock_irq(&pipe->rd_wait.lock);
> +	__pipe_lock(pipe);

This mustn't sleep.  post_one_notification() needs to be callable with a
spinlock held.

David