generic hugetlbfs can handle that condition correctly. With HPAGE_SHIFT = 0
we get
[0.241333] hugetlbfs: disabling because there are no supported hugepage sizes
bash-4.2# echo 30 > /proc/sys/vm/nr_hugepages
bash: echo: write error: Operation not supported
Fixes: "powerpc: get hugetlbpage handling more generic"
Reported-by: Chris Smart <csm...@ozlabs.au.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.ku...@linux.vnet.ibm.com>
---
arch/powerpc/mm/hugetlbpage.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index 289df38fb7e0..e46bbd716832 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -852,9 +852,6 @@ static int __init hugetlbpage_init(void)
else if (mmu_psize_defs[MMU_PAGE_2M].shift)
HPAGE_SHIFT = mmu_psize_defs[MMU_PAGE_2M].shift;
#endif
- else
- panic("%s: Unable to set default huge page size\n", __func__);
-
return 0;
}
--
2.10.2
