1VZALLOC(9) Memory Management in Linux VZALLOC(9)
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6 vzalloc - allocate virtually contiguous memory with zero fill
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9 void * vzalloc(unsigned long size);
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12 size
13 allocation size Allocate enough pages to cover size from the page
14 level allocator and map them into contiguous kernel virtual space.
15 The memory allocated is set to zero.
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18 For tight control over page level allocator and protection flags use
19 __vmalloc instead.
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22Kernel Hackers Manual 2.6. November 2011 VZALLOC(9)