diff options
| author | Vladimir Davydov <[email protected]> | 2015-11-05 18:49:27 -0800 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2015-11-05 19:34:48 -0800 |
| commit | 706874e9096e9d468eed9c2b03c8374e806535f3 (patch) | |
| tree | faafbd597b50f57df9c4e001e84ac2d13e2eae12 | |
| parent | 5d3875a01eeafef7ef0b73a99462cb9bd55e8485 (diff) | |
mm: do not inc NR_PAGETABLE if ptlock_init failed
If ALLOC_SPLIT_PTLOCKS is defined, ptlock_init may fail, in which case we
shouldn't increment NR_PAGETABLE.
Since small allocations, such as ptlock, normally do not fail (currently
they can fail if kmemcg is used though), this patch does not really fix
anything and should be considered as a code cleanup.
Signed-off-by: Vladimir Davydov <[email protected]>
Acked-by: Kirill A. Shutemov <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | include/linux/mm.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index fa08f3cf0f22..3c258f8eb9ae 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1606,8 +1606,10 @@ static inline void pgtable_init(void) static inline bool pgtable_page_ctor(struct page *page) { + if (!ptlock_init(page)) + return false; inc_zone_page_state(page, NR_PAGETABLE); - return ptlock_init(page); + return true; } static inline void pgtable_page_dtor(struct page *page) |