[PATCH v4 4/9] um: export signals_enabled directly

[Johannes Berg]

On Thu, 2021-06-17 at 21:21 +0200, Richard Weinberger wrote:
> On Fri, Mar 5, 2021 at 1:20 PM Johannes Berg <johannes at sipsolutions.net> wrote:
> > +#define UML_SETJMP(buf) ({                             \
> > +       int n, enable;                                  \
> > +       enable = *(volatile int *)&signals_enabled;     \
> 
> Isn't this a case for READ_ONCE()?

I guess, but it's in shared code, so must compile without kernel-space
headers.

johannes