Messages in this thread |  | | Date | Fri, 14 Sep 2001 09:15:59 +0000 | From | Pavel Machek <> | Subject | Re: [SMP lock BUG?] Re: Feedback on preemptible kernel patch |
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Hi!
> > #define kmap_atomic(page,idx) ctx_sw_off(); kmap(page); > > #define kunmap_atomic(page,idx) ctx_sw_on(); kunmap(page); > > > No. kmap_atomic is called from interrupt context, and kmap calls > schedule(). > > I thought about the attached patch (completely untested).
is it legal to kmap_atomic(a,b); kmap_atomic(c,d); kunmap_atomic(a,b); ? If so, your patch may need some ounting.... Pavel -- Philips Velo 1: 1"x4"x8", 300gram, 60, 12MB, 40bogomips, linux, mutt, details at http://atrey.karlin.mff.cuni.cz/~pavel/velo/index.html.
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