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@ -69,13 +69,16 @@ argument need not be a multiple of the page size,
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but since residency information is returned for whole pages,
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.I length
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is effectively rounded up to the next multiple of the page size.
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One may obtain the page size (PAGE_SIZE) using
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One may obtain the page size
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.RB ( PAGE_SIZE )
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using
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.IR sysconf(_SC_PAGESIZE) .
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The
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.I vec
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argument must point to an array containing at least
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(length+PAGE_SIZE-1) / PAGE_SIZE bytes.
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.I "(length+PAGE_SIZE-1) / PAGE_SIZE"
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bytes.
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On return,
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the least significant bit of each byte will be set if
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the corresponding page is currently resident in memory,
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