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remove anon mmap allocation flag MAP_HUGETLB

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dallas marlow 2014-05-08 11:45:44 -04:00
parent b5616dafd1
commit f41cde3105
1 changed files with 7 additions and 1 deletions
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8
util/arena.cc
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@ -83,8 +83,14 @@ char* Arena::AllocateAligned(size_t bytes, size_t huge_page_tlb_size,
size_t reserved_size =
((bytes - 1U) / huge_page_tlb_size + 1U) * huge_page_tlb_size;
assert(reserved_size >= bytes);
void* addr = mmap(nullptr, reserved_size, (PROT_READ | PROT_WRITE),
(MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB), 0, 0);
(MAP_PRIVATE | MAP_ANONYMOUS), 0, 0);
// only supported in kernel's 2.6.34 and above
// void* addr = mmap(nullptr, reserved_size, (PROT_READ | PROT_WRITE),
// (MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB), 0, 0);
if (addr == MAP_FAILED) {
Warn(logger, "AllocateAligned fail to allocate huge TLB pages: %s",
strerror(errno));