Commit 97ad2be1 authored by Sasha Levin's avatar Sasha Levin Committed by Linus Torvalds
Browse files

mm, hugetlb: correct bit shift in hstate_sizelog()

hstate_sizelog() would shift left an int rather than long, triggering
undefined behaviour and passing an incorrect value when the requested
page size was more than 4GB, thus breaking >4GB pages.

Signed-off-by: default avatarSasha Levin <>
Cc: Andrea Arcangeli <>
Cc: Mel Gorman <>
Cc: Andrey Ryabinin <>
Signed-off-by: default avatarAndrew Morton <>
Signed-off-by: default avatarLinus Torvalds <>
parent 247b1447
......@@ -311,7 +311,8 @@ static inline struct hstate *hstate_sizelog(int page_size_log)
if (!page_size_log)
return &default_hstate;
return size_to_hstate(1 << page_size_log);
return size_to_hstate(1UL << page_size_log);
static inline struct hstate *hstate_vma(struct vm_area_struct *vma)
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