[PATCH 01/25] xor: assert that xor_blocks is not called from interrupt context

[Peter Zijlstra]

On Wed, Mar 04, 2026 at 03:51:34PM +0100, Christoph Hellwig wrote:

> > How about "WARN_ON_ONCE(!preemptible())"?  I think that covers the union
> > of the context restrictions correctly.  (Compared to in_task(), it
> > handles the cases where hardirqs or softirqs are disabled.)
> 
> Good enough I guess.  Peter?

Sure. The only caveat with that is that for PREEMPT_COUNT=n this might
not work, it unconditionally returns 0.