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| author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2017-11-16 02:35:37 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-11-16 03:21:04 +0100 |
| commit | c4812909f5d5a9b7f1c85a2d95be388a066cda52 (patch) | |
| tree | 3739e892ee148260e2172d579a1c1d838594fb11 /kernel/fork.c | |
| parent | mm: account pud page tables (diff) | |
| download | linux-c4812909f5d5a9b7f1c85a2d95be388a066cda52.tar.xz linux-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 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index a4eb6f289365..946922a30ede 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -817,7 +817,7 @@ static struct mm_struct *mm_init(struct mm_struct *mm, struct task_struct *p, init_rwsem(&mm->mmap_sem); INIT_LIST_HEAD(&mm->mmlist); mm->core_state = NULL; - atomic_long_set(&mm->nr_ptes, 0); + mm_nr_ptes_init(mm); mm_nr_pmds_init(mm); mm_nr_puds_init(mm); mm->map_count = 0; @@ -873,9 +873,9 @@ static void check_mm(struct mm_struct *mm) "mm:%p idx:%d val:%ld\n", mm, i, x); } - if (atomic_long_read(&mm->nr_ptes)) + if (mm_nr_ptes(mm)) pr_alert("BUG: non-zero nr_ptes on freeing mm: %ld\n", - atomic_long_read(&mm->nr_ptes)); + mm_nr_ptes(mm)); if (mm_nr_pmds(mm)) pr_alert("BUG: non-zero nr_pmds on freeing mm: %ld\n", mm_nr_pmds(mm)); |