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| author | Johannes Weiner <hannes@cmpxchg.org> | 2014-12-10 15:44:58 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-12-10 17:41:09 -0800 |
| commit | 9edad6ea0f1416415f6fe31cc9d1dbc3817803ed (patch) | |
| tree | 0f734696a3f9e66ce5f43f602a78736c0ff66b68 /mm | |
| parent | 5d1ea48bdde67898e87d6d8f511fd097fa64c749 (diff) | |
| download | linux-9edad6ea0f1416415f6fe31cc9d1dbc3817803ed.tar.gz linux-9edad6ea0f1416415f6fe31cc9d1dbc3817803ed.tar.bz2 linux-9edad6ea0f1416415f6fe31cc9d1dbc3817803ed.zip | |
mm: move page->mem_cgroup bad page handling into generic code
Now that the external page_cgroup data structure and its lookup is
gone, let the generic bad_page() check for page->mem_cgroup sanity.
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Vladimir Davydov <vdavydov@parallels.com>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Tejun Heo <tj@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/debug.c | 5 | ||||
| -rw-r--r-- | mm/memcontrol.c | 15 | ||||
| -rw-r--r-- | mm/page_alloc.c | 12 |
3 files changed, 12 insertions, 20 deletions
diff --git a/mm/debug.c b/mm/debug.c index 5ce45c9a29b5..0e58f3211f89 100644 --- a/mm/debug.c +++ b/mm/debug.c @@ -95,7 +95,10 @@ void dump_page_badflags(struct page *page, const char *reason, dump_flags(page->flags & badflags, pageflag_names, ARRAY_SIZE(pageflag_names)); } - mem_cgroup_print_bad_page(page); +#ifdef CONFIG_MEMCG + if (page->mem_cgroup) + pr_alert("page->mem_cgroup:%p\n", page->mem_cgroup); +#endif } void dump_page(struct page *page, const char *reason) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index ab270e34ba3e..1869cb64d089 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -3157,21 +3157,6 @@ static inline int mem_cgroup_move_swap_account(swp_entry_t entry, } #endif -#ifdef CONFIG_DEBUG_VM -bool mem_cgroup_bad_page_check(struct page *page) -{ - if (mem_cgroup_disabled()) - return false; - - return page->mem_cgroup != NULL; -} - -void mem_cgroup_print_bad_page(struct page *page) -{ - pr_alert("page->mem_cgroup:%p\n", page->mem_cgroup); -} -#endif - static DEFINE_MUTEX(memcg_limit_mutex); static int mem_cgroup_resize_limit(struct mem_cgroup *memcg, diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 22cfdeffbf69..a7198c065999 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -640,8 +640,10 @@ static inline int free_pages_check(struct page *page) bad_reason = "PAGE_FLAGS_CHECK_AT_FREE flag(s) set"; bad_flags = PAGE_FLAGS_CHECK_AT_FREE; } - if (unlikely(mem_cgroup_bad_page_check(page))) - bad_reason = "cgroup check failed"; +#ifdef CONFIG_MEMCG + if (unlikely(page->mem_cgroup)) + bad_reason = "page still charged to cgroup"; +#endif if (unlikely(bad_reason)) { bad_page(page, bad_reason, bad_flags); return 1; @@ -900,8 +902,10 @@ static inline int check_new_page(struct page *page) bad_reason = "PAGE_FLAGS_CHECK_AT_PREP flag set"; bad_flags = PAGE_FLAGS_CHECK_AT_PREP; } - if (unlikely(mem_cgroup_bad_page_check(page))) - bad_reason = "cgroup check failed"; +#ifdef CONFIG_MEMCG + if (unlikely(page->mem_cgroup)) + bad_reason = "page still charged to cgroup"; +#endif if (unlikely(bad_reason)) { bad_page(page, bad_reason, bad_flags); return 1; |