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mm: use updated pmdp_invalidate() interface to track dirty/accessed bits

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Use the modifed pmdp_invalidate() that returns the previous value of pmd
to transfer dirty and accessed bits.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Kirill A. Shutemov <[email protected]>
Cc: Andrea Arcangeli <[email protected]>
Cc: Aneesh Kumar K.V <[email protected]>
Cc: Catalin Marinas <[email protected]>
Cc: David Daney <[email protected]>
Cc: David Miller <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Martin Schwidefsky <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Nitin Gupta <[email protected]>
Cc: Ralf Baechle <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Vineet Gupta <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Kirill A. Shutemov 2018-01-31 16:18:20 -08:00 • committed by Linus Torvalds
commit a3cf988fcb
2 changed files with 16 additions and 21 deletions
Download patch file Download diff file Expand all files Collapse all files

8
fs/proc/task_mmu.c
View file

@ -982,14 +982,14 @@ static inline void clear_soft_dirty(struct vm_area_struct *vma,
static inline void clear_soft_dirty_pmd(struct vm_area_struct *vma,
unsigned long addr, pmd_t *pmdp)
{
pmd_t pmd = *pmdp;
pmd_t old, pmd = *pmdp;
if (pmd_present(pmd)) {
/* See comment in change_huge_pmd() */
pmdp_invalidate(vma, addr, pmdp);
if (pmd_dirty(*pmdp))
old = pmdp_invalidate(vma, addr, pmdp);
if (pmd_dirty(old))
pmd = pmd_mkdirty(pmd);
if (pmd_young(*pmdp))
if (pmd_young(old))
pmd = pmd_mkyoung(pmd);
pmd = pmd_wrprotect(pmd);