Messages in this thread |  | | Subject | Re: [SMP lock BUG?] Re: Feedback on preemptible kernel patch | From | Robert Love <> | Date | 17 Sep 2001 18:41:46 -0400 |
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On Fri, 2001-09-14 at 05:15, Pavel Machek wrote: > is it legal to kmap_atomic(a,b); kmap_atomic(c,d); kunmap_atomic(a,b); ? > If so, your patch may need some ounting....
ctx_sw_on and ctx_sw_off use a recursive spinlock, so the calls to kunmap_atomic won't drop the slock until the last call.
-- Robert M. Love rml at ufl.edu rml at tech9.net
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