Hi Naoya,
FYI, there are new smatch warnings show up in
tree: git://git.cmpxchg.org/linux-mmotm.git master
head: 0363f94bc1c9b81f23ee7d2446331eb288568ea7
commit: 81272031cc2831a3d1abb3c681f1188aa36a1454 [97/220] pagewalk: remove argument hmask from hugetlb_entry()
fs/proc/task_mmu.c:1042 pagemap_hugetlb() error: we previously assumed 'vma' could be null (see line 1037)
vim +/vma +1042 fs/proc/task_mmu.c
d9104d1c Cyrill Gorcunov 2013-09-11 1031 int flags2;
16fbdce6 Konstantin Khlebnikov 2012-05-10 1032 pagemap_entry_t pme;
81272031 Naoya Horiguchi 2014-02-13 1033 unsigned long hmask;
5dc37642 Naoya Horiguchi 2009-12-14 1034
d9104d1c Cyrill Gorcunov 2013-09-11 1035 WARN_ON_ONCE(!vma);
d9104d1c Cyrill Gorcunov 2013-09-11 1036
d9104d1c Cyrill Gorcunov 2013-09-11 @1037 if (vma && (vma->vm_flags & VM_SOFTDIRTY))
d9104d1c Cyrill Gorcunov 2013-09-11 1038 flags2 = __PM_SOFT_DIRTY;
d9104d1c Cyrill Gorcunov 2013-09-11 1039 else
d9104d1c Cyrill Gorcunov 2013-09-11 1040 flags2 = 0;
d9104d1c Cyrill Gorcunov 2013-09-11 1041
21a2f342 Naoya Horiguchi 2014-02-13 @1042 hmask = huge_page_mask(hstate_vma(vma));
5dc37642 Naoya Horiguchi 2009-12-14 1043 for (; addr != end; addr += PAGE_SIZE) {
116354d1 Naoya Horiguchi 2010-04-06 1044 int offset = (addr & ~hmask) >> PAGE_SHIFT;
d9104d1c Cyrill Gorcunov 2013-09-11 1045 huge_pte_to_pagemap_entry(&pme, pm, *pte, offset, flags2);
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