Re: [patch 3/3] mm: move page->mem_cgroup bad page handling into generic code
(2014/11/02 12:15), Johannes Weiner wrote: > 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 Acked-by: KAMEZAWA Hiroyuki -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [patch 3/3] mm: move page-mem_cgroup bad page handling into generic code
(2014/11/02 12:15), Johannes Weiner wrote: 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 han...@cmpxchg.org Acked-by: KAMEZAWA Hiroyuki kamezawa.hir...@jp.fujitsu.com -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [patch 3/3] mm: move page->mem_cgroup bad page handling into generic code
On Sat, Nov 01, 2014 at 11:15:56PM -0400, Johannes Weiner wrote: > 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 Acked-by: Vladimir Davydov -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [patch 3/3] mm: move page->mem_cgroup bad page handling into generic code
On Sat 01-11-14 23:15:56, Johannes Weiner wrote:
> 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
Acked-by: Michal Hocko
> ---
> include/linux/memcontrol.h | 4
> mm/debug.c | 5 -
> mm/memcontrol.c| 15 ---
> mm/page_alloc.c| 12
> 4 files changed, 12 insertions(+), 24 deletions(-)
>
> diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
> index dafba59b31b4..e789551d4db0 100644
> --- a/include/linux/memcontrol.h
> +++ b/include/linux/memcontrol.h
> @@ -173,10 +173,6 @@ static inline void mem_cgroup_count_vm_event(struct
> mm_struct *mm,
> void mem_cgroup_split_huge_fixup(struct page *head);
> #endif
>
> -#ifdef CONFIG_DEBUG_VM
> -bool mem_cgroup_bad_page_check(struct page *page);
> -void mem_cgroup_print_bad_page(struct page *page);
> -#endif
> #else /* CONFIG_MEMCG */
> struct mem_cgroup;
>
> 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 fbb41a170eae..3645641513a1 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 6a952237a677..161da09fcda2 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -653,8 +653,10 @@ 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;
> @@ -920,8 +922,10 @@ 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;
> --
> 2.1.3
>
--
Michal Hocko
SUSE Labs
--
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Re: [patch 3/3] mm: move page-mem_cgroup bad page handling into generic code
On Sat 01-11-14 23:15:56, Johannes Weiner wrote:
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 han...@cmpxchg.org
Acked-by: Michal Hocko mho...@suse.cz
---
include/linux/memcontrol.h | 4
mm/debug.c | 5 -
mm/memcontrol.c| 15 ---
mm/page_alloc.c| 12
4 files changed, 12 insertions(+), 24 deletions(-)
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index dafba59b31b4..e789551d4db0 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -173,10 +173,6 @@ static inline void mem_cgroup_count_vm_event(struct
mm_struct *mm,
void mem_cgroup_split_huge_fixup(struct page *head);
#endif
-#ifdef CONFIG_DEBUG_VM
-bool mem_cgroup_bad_page_check(struct page *page);
-void mem_cgroup_print_bad_page(struct page *page);
-#endif
#else /* CONFIG_MEMCG */
struct mem_cgroup;
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 fbb41a170eae..3645641513a1 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 6a952237a677..161da09fcda2 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -653,8 +653,10 @@ 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;
@@ -920,8 +922,10 @@ 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;
--
2.1.3
--
Michal Hocko
SUSE Labs
--
To unsubscribe from this list: send the line unsubscribe linux-kernel in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Re: [patch 3/3] mm: move page-mem_cgroup bad page handling into generic code
On Sat, Nov 01, 2014 at 11:15:56PM -0400, Johannes Weiner wrote: 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 han...@cmpxchg.org Acked-by: Vladimir Davydov vdavy...@parallels.com -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [patch 3/3] mm: move page->mem_cgroup bad page handling into generic code
From: Johannes Weiner Date: Sat, 1 Nov 2014 23:15:56 -0400 > 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 Acked-by: David S. Miller -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [patch 3/3] mm: move page-mem_cgroup bad page handling into generic code
From: Johannes Weiner han...@cmpxchg.org Date: Sat, 1 Nov 2014 23:15:56 -0400 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 han...@cmpxchg.org Acked-by: David S. Miller da...@davemloft.net -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[patch 3/3] 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
---
include/linux/memcontrol.h | 4
mm/debug.c | 5 -
mm/memcontrol.c| 15 ---
mm/page_alloc.c| 12
4 files changed, 12 insertions(+), 24 deletions(-)
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index dafba59b31b4..e789551d4db0 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -173,10 +173,6 @@ static inline void mem_cgroup_count_vm_event(struct
mm_struct *mm,
void mem_cgroup_split_huge_fixup(struct page *head);
#endif
-#ifdef CONFIG_DEBUG_VM
-bool mem_cgroup_bad_page_check(struct page *page);
-void mem_cgroup_print_bad_page(struct page *page);
-#endif
#else /* CONFIG_MEMCG */
struct mem_cgroup;
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 fbb41a170eae..3645641513a1 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 6a952237a677..161da09fcda2 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -653,8 +653,10 @@ 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;
@@ -920,8 +922,10 @@ 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;
--
2.1.3
--
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[patch 3/3] 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 han...@cmpxchg.org
---
include/linux/memcontrol.h | 4
mm/debug.c | 5 -
mm/memcontrol.c| 15 ---
mm/page_alloc.c| 12
4 files changed, 12 insertions(+), 24 deletions(-)
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index dafba59b31b4..e789551d4db0 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -173,10 +173,6 @@ static inline void mem_cgroup_count_vm_event(struct
mm_struct *mm,
void mem_cgroup_split_huge_fixup(struct page *head);
#endif
-#ifdef CONFIG_DEBUG_VM
-bool mem_cgroup_bad_page_check(struct page *page);
-void mem_cgroup_print_bad_page(struct page *page);
-#endif
#else /* CONFIG_MEMCG */
struct mem_cgroup;
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 fbb41a170eae..3645641513a1 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 6a952237a677..161da09fcda2 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -653,8 +653,10 @@ 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;
@@ -920,8 +922,10 @@ 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;
--
2.1.3
--
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the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
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