diff options
| author |   Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2017-11-15 17:35:37 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2017-11-15 18:21:04 -0800 |
| commit | c4812909f5d5a9b7f1c85a2d95be388a066cda52 (patch) | |
| tree | 3739e892ee148260e2172d579a1c1d838594fb11 /mm/khugepaged.c | |
| parent | mm: account pud page tables (diff) | |
| download | linux-dev-c4812909f5d5a9b7f1c85a2d95be388a066cda52.tar.xz linux-dev-c4812909f5d5a9b7f1c85a2d95be388a066cda52.zip | |
mm: introduce wrappers to access mm->nr_ptes
Let's add wrappers for ->nr_ptes with the same interface as for nr_pmd
and nr_pud.
The patch also makes nr_ptes accounting dependent onto CONFIG_MMU. Page
table accounting doesn't make sense if you don't have page tables.
It's preparation for consolidation of page-table counters in mm_struct.
Link: http://lkml.kernel.org/r/20171006100651.44742-1-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/khugepaged.c')
| -rw-r--r-- | mm/khugepaged.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 43cb3043311b..ea4ff259b671 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -1270,7 +1270,7 @@ static void retract_page_tables(struct address_space *mapping, pgoff_t pgoff) _pmd = pmdp_collapse_flush(vma, addr, pmd); spin_unlock(ptl); up_write(&vma->vm_mm->mmap_sem); - atomic_long_dec(&vma->vm_mm->nr_ptes); + mm_dec_nr_ptes(vma->vm_mm); pte_free(vma->vm_mm, pmd_pgtable(_pmd)); } } |