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111
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1 typedef struct
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2 {
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3 unsigned long long pte;
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4 } pte_t;
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5 pte_t mk_swap_pte (unsigned long offset)
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6 {
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7 pte_t pte;
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8 pte.pte = (offset << 40);
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9 return pte;
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10 }
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11 int pte_file (pte_t pte)
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12 {
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13 return pte.pte & (1 << 4);
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14 }
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15 typedef struct
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16 {
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17 unsigned long val;
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18 } swp_entry_t;
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19 pte_t swp_entry_to_pte (swp_entry_t entry)
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20 {
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21 swp_entry_t arch_entry;
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22 arch_entry = (swp_entry_t){mk_swap_pte (swp_offset (entry)).pte};
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23 __BUG_ON ((unsigned long) pte_file ((pte_t) {arch_entry.val}));
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24 return (pte_t) {arch_entry.val};
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25 }
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