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Commit bae9c19b authored Jan 13, 2011 by Andrea Arcangeli Committed by Linus Torvalds Jan 13, 2011

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>

parent e7a00c45

arch/x86/kernel/vm86_32.c

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -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);

mm/mempolicy.c

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -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,

mm/mincore.c

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -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

mm/mprotect.c

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -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);

mm/mremap.c

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -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;