Messages in this thread | | | Date | Thu, 9 Aug 2007 10:55:46 -0700 (PDT) | From | Linus Torvalds <> | Subject | Re: [PATCH] make atomic_t volatile on all architectures |
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On Thu, 9 Aug 2007, Chuck Ebbert wrote: > > You can use this forget() macro to make the compiler reread a variable: > > #define forget(var) asm volatile ("" : "=m"(var))
No. That will also make the compiler "forget" any previous writes to it, so it changes behaviour.
You'd have to use "+m".
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