| 1 |
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| 2 | #ifndef _TIME_NAMESPACE_INTERNAL_H
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| 3 | #define _TIME_NAMESPACE_INTERNAL_H
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| 4 |
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| 5 | #include <linux/mutex.h>
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| 6 |
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| 7 | struct time_namespace;
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| 8 |
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| 9 | |
| 10 | * Protects possibly multiple offsets writers racing each other
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| 11 | * and tasks entering the namespace.
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| 12 |
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| 13 | extern struct mutex timens_offset_lock;
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| 14 |
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| 15 | #ifdef CONFIG_TIME_NS_VDSO
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| 16 | int timens_vdso_alloc_vvar_page(struct time_namespace *ns);
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| 17 | void timens_vdso_free_vvar_page(struct time_namespace *ns);
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| 18 | #else
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| 19 | static inline int timens_vdso_alloc_vvar_page(struct time_namespace *ns)
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| 20 | {
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| 21 | return 0;
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| 22 | }
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| 23 | static inline void timens_vdso_free_vvar_page(struct time_namespace *ns)
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| 24 | {
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| 25 | }
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| 26 | #endif
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| 27 |
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| 28 | #endif
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