Commit e346489f authored by Nitin Gupta's avatar Nitin Gupta Committed by Greg Kroah-Hartman

sparc64: Fix mapping of 64k pages with MAP_FIXED


[ Upstream commit b6c41cb0 ]

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: dcd1912d ("sparc64: Add 64K page size support")
Signed-off-by: default avatarNitin Gupta <nitin.m.gupta@oracle.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 21dccb0f
...@@ -24,9 +24,11 @@ static inline int is_hugepage_only_range(struct mm_struct *mm, ...@@ -24,9 +24,11 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
static inline int prepare_hugepage_range(struct file *file, static inline int prepare_hugepage_range(struct file *file,
unsigned long addr, unsigned long len) unsigned long addr, unsigned long len)
{ {
if (len & ~HPAGE_MASK) struct hstate *h = hstate_file(file);
if (len & ~huge_page_mask(h))
return -EINVAL; return -EINVAL;
if (addr & ~HPAGE_MASK) if (addr & ~huge_page_mask(h))
return -EINVAL; return -EINVAL;
return 0; return 0;
} }
......
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