Linux Kernel  3.7.1
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mmu.h
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1 #ifndef __MMU_H
2 #define __MMU_H
3 
4 /*
5  * Type for a context number. We declare it volatile to ensure proper
6  * ordering when it's accessed outside of spinlock'd critical sections
7  * (e.g., as done in activate_mm() and init_new_context()).
8  */
9 typedef volatile unsigned long mm_context_t;
10 
11 typedef unsigned long nv_mm_context_t;
12 
13 #endif