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#include <typedefs.h>
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#include <typedefs.h>
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#include <mm/page.h>
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#include <mm/page.h>
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#include <synch/spinlock.h>
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#include <synch/spinlock.h>
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#ifdef __SMP__
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#ifdef __SMP__
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#include <arch/atomic.h>
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#include <arch/smp/atomic.h>
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#endif /* __SMP__ */
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#endif /* __SMP__ */
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/*
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/*
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 * NOTE ON ATOMIC READS:
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 * NOTE ON ATOMIC READS:
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 * Some architectures cannot read __u32 atomically.
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 * Some architectures cannot read __u32 atomically.