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sparc64: Fix mapping of 64k pages with MAP_FIXED 

An incorrect huge page alignment check caused
mmap failure for 64K pages when MAP_FIXED is used
with address not aligned to HPAGE_SIZE.

Orabug: 25885991

Fixes: dcd1912d21 ("sparc64: Add 64K page size support")
Signed-off-by: Nitin Gupta <nitin.m.gupta@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nitin Gupta 2017-05-15 16:28:17 -07:00 committed by David S. Miller
parent b23afd3848
commit b6c41cb050
1 changed files with 4 additions and 2 deletions
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6
arch/sparc/include/asm/hugetlb.h
View File

@ -24,9 +24,11 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
static inline int prepare_hugepage_range(struct file *file,
unsigned long addr, unsigned long len)
{
if (len & ~HPAGE_MASK)
struct hstate *h = hstate_file(file);
if (len & ~huge_page_mask(h))
return -EINVAL;
if (addr & ~HPAGE_MASK)
if (addr & ~huge_page_mask(h))
return -EINVAL;
return 0;
}