Messages in this thread | | | Subject | Re: [PATCH -rt] update kmap_atomic on !HIGHMEM | From | Daniel Walker <> | Date | Wed, 27 Dec 2006 13:54:15 -0800 |
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On Wed, 2006-12-27 at 22:25 +0100, Ingo Molnar wrote: > > +void pagefault_disable(void) > +{ > + current->pagefault_disabled++; > + /* > + * make sure to have issued the store before a pagefault > + * can hit. > + */ > + barrier(); > +} > + > +void pagefault_enable(void) > +{ > + /* > + * make sure to issue those last loads/stores before enabling > + * the pagefault handler again. > + */ > + barrier(); > + current->pagefault_disabled--; > +} > +
I'll test it, but clearly I'm not going to get the same scheduling while atomic using this change.. So may as well just put it in -rt and see if something crashes ..
Daniel
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