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thp: split_huge_page_mm/vma 

split_huge_page_pmd compat code.  Each one of those would need to be
expanded to hundred of lines of complex code without a fully reliable
split_huge_page_pmd design.

Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andrea Arcangeli 2011-01-13 15:46:46 -08:00 committed by Linus Torvalds
parent e7a00c45f2
commit bae9c19bf1
6 changed files with 6 additions and 0 deletions
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1
arch/x86/kernel/vm86_32.c
View File

@ -179,6 +179,7 @@ static void mark_screen_rdonly(struct mm_struct *mm)
if (pud_none_or_clear_bad(pud)) if (pud_none_or_clear_bad(pud))
goto out; goto out;
pmd = pmd_offset(pud, 0xA0000); pmd = pmd_offset(pud, 0xA0000);
split_huge_page_pmd(mm, pmd);
if (pmd_none_or_clear_bad(pmd)) if (pmd_none_or_clear_bad(pmd))
goto out; goto out;
pte = pte_offset_map_lock(mm, pmd, 0xA0000, &ptl); pte = pte_offset_map_lock(mm, pmd, 0xA0000, &ptl);

1
mm/mempolicy.c
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@ -514,6 +514,7 @@ static inline int check_pmd_range(struct vm_area_struct *vma, pud_t *pud,
pmd = pmd_offset(pud, addr); pmd = pmd_offset(pud, addr);
do { do {
next = pmd_addr_end(addr, end); next = pmd_addr_end(addr, end);
split_huge_page_pmd(vma->vm_mm, pmd);
if (pmd_none_or_clear_bad(pmd)) if (pmd_none_or_clear_bad(pmd))
continue; continue;
if (check_pte_range(vma, pmd, addr, next, nodes, if (check_pte_range(vma, pmd, addr, next, nodes,

1
mm/mincore.c
View File

@ -154,6 +154,7 @@ static void mincore_pmd_range(struct vm_area_struct *vma, pud_t *pud,
pmd = pmd_offset(pud, addr); pmd = pmd_offset(pud, addr);
do { do {
next = pmd_addr_end(addr, end); next = pmd_addr_end(addr, end);
split_huge_page_pmd(vma->vm_mm, pmd);
if (pmd_none_or_clear_bad(pmd)) if (pmd_none_or_clear_bad(pmd))
mincore_unmapped_range(vma, addr, next, vec); mincore_unmapped_range(vma, addr, next, vec);
else else

1
mm/mprotect.c
View File

@ -88,6 +88,7 @@ static inline void change_pmd_range(struct mm_struct *mm, pud_t *pud,
pmd = pmd_offset(pud, addr); pmd = pmd_offset(pud, addr);
do { do {
next = pmd_addr_end(addr, end); next = pmd_addr_end(addr, end);
split_huge_page_pmd(mm, pmd);
if (pmd_none_or_clear_bad(pmd)) if (pmd_none_or_clear_bad(pmd))
continue; continue;
change_pte_range(mm, pmd, addr, next, newprot, dirty_accountable); change_pte_range(mm, pmd, addr, next, newprot, dirty_accountable);

1
mm/mremap.c
View File

@ -41,6 +41,7 @@ static pmd_t *get_old_pmd(struct mm_struct *mm, unsigned long addr)
return NULL; return NULL;
pmd = pmd_offset(pud, addr); pmd = pmd_offset(pud, addr);
split_huge_page_pmd(mm, pmd);
if (pmd_none_or_clear_bad(pmd)) if (pmd_none_or_clear_bad(pmd))
return NULL; return NULL;

1
mm/pagewalk.c
View File

@ -34,6 +34,7 @@ static int walk_pmd_range(pud_t *pud, unsigned long addr, unsigned long end,
pmd = pmd_offset(pud, addr); pmd = pmd_offset(pud, addr);
do { do {
next = pmd_addr_end(addr, end); next = pmd_addr_end(addr, end);
split_huge_page_pmd(walk->mm, pmd);
if (pmd_none_or_clear_bad(pmd)) { if (pmd_none_or_clear_bad(pmd)) {
if (walk->pte_hole) if (walk->pte_hole)
err = walk->pte_hole(addr, next, walk); err = walk->pte_hole(addr, next, walk);