Commit 706874e9 authored by Vladimir Davydov's avatar Vladimir Davydov Committed by Linus Torvalds

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: default avatarVladimir Davydov <vdavydov@virtuozzo.com>
Acked-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: default avatarMichal Hocko <mhocko@suse.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 5d3875a0
...@@ -1606,8 +1606,10 @@ static inline void pgtable_init(void) ...@@ -1606,8 +1606,10 @@ static inline void pgtable_init(void)
static inline bool pgtable_page_ctor(struct page *page) static inline bool pgtable_page_ctor(struct page *page)
{ {
if (!ptlock_init(page))
return false;
inc_zone_page_state(page, NR_PAGETABLE); inc_zone_page_state(page, NR_PAGETABLE);
return ptlock_init(page); return true;
} }
static inline void pgtable_page_dtor(struct page *page) static inline void pgtable_page_dtor(struct page *page)
......
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