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mmap()/shmget(): use Linux huge page size when not specified

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Fixes: 089b443 "mmap()/shmget(): use Linux default huge page size when not specified"
Change-Id: If8043a0993d1131ea0344aa6d500b35c7a291884
This commit is contained in:
Balazs Gerofi
2019-06-05 16:07:34 +09:00
committed by Masamichi Takagi
parent d5aafca1ae
commit 51fe77cdae
1 changed files with 6 additions and 0 deletions
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6
kernel/syscall.c
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@ -1689,6 +1689,9 @@ do_mmap(const uintptr_t addr0, const size_t len0, const int prot,
if (flags & MAP_HUGETLB) {
pgshift = (flags >> MAP_HUGE_SHIFT) & 0x3F;
if (!pgshift) {
pgshift = ihk_mc_get_linux_default_huge_page_shift();
}
p2align = pgshift - PAGE_SHIFT;
}
else if ((((flags & MAP_PRIVATE) && (flags & MAP_ANONYMOUS))
@ -5709,6 +5712,9 @@ int do_shmget(const key_t key, const size_t size, const int shmflg)
if (shmflg & SHM_HUGETLB) {
pgshift = (shmflg >> SHM_HUGE_SHIFT) & 0x3F;
if (!pgshift) {
pgshift = ihk_mc_get_linux_default_huge_page_shift();
}
} else if (proc->thp_disable) {
pgshift = PAGE_SHIFT;
} else {