Commit bae9c19b authored by Andrea Arcangeli's avatar Andrea Arcangeli Committed by Linus Torvalds

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: default avatarAndrea Arcangeli <aarcange@redhat.com>
Acked-by: default avatarRik van Riel <riel@redhat.com>
Acked-by: default avatarMel Gorman <mel@csn.ul.ie>
Signed-off-by: default avatarJohannes Weiner <hannes@cmpxchg.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent e7a00c45
...@@ -179,6 +179,7 @@ static void mark_screen_rdonly(struct mm_struct *mm) ...@@ -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);
......
...@@ -514,6 +514,7 @@ static inline int check_pmd_range(struct vm_area_struct *vma, pud_t *pud, ...@@ -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,
......
...@@ -154,6 +154,7 @@ static void mincore_pmd_range(struct vm_area_struct *vma, pud_t *pud, ...@@ -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
......
...@@ -88,6 +88,7 @@ static inline void change_pmd_range(struct mm_struct *mm, pud_t *pud, ...@@ -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);
......
...@@ -41,6 +41,7 @@ static pmd_t *get_old_pmd(struct mm_struct *mm, unsigned long addr) ...@@ -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;
......
...@@ -34,6 +34,7 @@ static int walk_pmd_range(pud_t *pud, unsigned long addr, unsigned long end, ...@@ -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);
......
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