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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | /* |
| 2 | * include/linux/rmap-locking.h |
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| 3 | * |
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| 4 | * Locking primitives for exclusive access to a page's reverse-mapping |
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| 5 | * pte chain. |
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| 6 | */ |
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| 7 | |||
| 8 | #include <linux/slab.h> |
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| 9 | |||
| 10 | struct pte_chain; |
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| 11 | extern kmem_cache_t *pte_chain_cache; |
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| 12 | |||
| 13 | #define pte_chain_lock(page) bit_spin_lock(PG_chainlock, &page->flags) |
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| 14 | #define pte_chain_unlock(page) bit_spin_unlock(PG_chainlock, &page->flags) |
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| 15 | |||
| 16 | struct pte_chain *pte_chain_alloc(int gfp_flags); |
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| 17 | void __pte_chain_free(struct pte_chain *pte_chain); |
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| 18 | |||
| 19 | static inline void pte_chain_free(struct pte_chain *pte_chain) |
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| 20 | { |
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| 21 | if (pte_chain) |
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| 22 | __pte_chain_free(pte_chain); |
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| 23 | } |