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 /include/linux/mm_types.h | |
| 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 'include/linux/mm_types.h')
| -rw-r--r-- | include/linux/mm_types.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index e9e561e02d22..e42048020664 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -401,7 +401,9 @@ struct mm_struct { */ atomic_t mm_count; +#ifdef CONFIG_MMU atomic_long_t nr_ptes; /* PTE page table pages */ +#endif #if CONFIG_PGTABLE_LEVELS > 2 atomic_long_t nr_pmds; /* PMD page table pages */ #endif |