Re: [PATCH v4] slab: Ignore internal flags in cache creation
On 10/16/2012 04:47 AM, David Rientjes wrote: > On Mon, 8 Oct 2012, David Rientjes wrote: > >>> diff --git a/mm/slab.h b/mm/slab.h >>> index 7deeb44..4c35c17 100644 >>> --- a/mm/slab.h >>> +++ b/mm/slab.h >>> @@ -45,6 +45,31 @@ static inline struct kmem_cache >>> *__kmem_cache_alias(const char *name, size_t siz >>> #endif >>> >>> >>> +/* Legal flag mask for kmem_cache_create(), for various configurations */ >>> +#define SLAB_CORE_FLAGS (SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA | SLAB_PANIC >>> | \ >>> +SLAB_DESTROY_BY_RCU | SLAB_DEBUG_OBJECTS ) >>> + >>> +#if defined(CONFIG_DEBUG_SLAB) >>> +#define SLAB_DEBUG_FLAGS (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER) >>> +#elif defined(CONFIG_SLUB_DEBUG) >>> +#define SLAB_DEBUG_FLAGS (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER | \ >>> + SLAB_TRACE | SLAB_DEBUG_FREE) >>> +#else >>> +#define SLAB_DEBUG_FLAGS (0) >>> +#endif >>> + >>> +#if defined(CONFIG_SLAB) >>> +#define SLAB_CACHE_FLAGS (SLAB_MEMSPREAD | SLAB_NOLEAKTRACE | \ >> >> s/SLAB_MEMSPREAD/SLAB_MEM_SPREAD/ >> > > Did you have a v5 of this patch with the above fix? > Yes, I sent it bundled in my kmemcg-slab series. I can send it separately as well, no problem. (Or we can merge the series!!! =p ) -- 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 v4] slab: Ignore internal flags in cache creation
On 10/16/2012 04:47 AM, David Rientjes wrote: On Mon, 8 Oct 2012, David Rientjes wrote: diff --git a/mm/slab.h b/mm/slab.h index 7deeb44..4c35c17 100644 --- a/mm/slab.h +++ b/mm/slab.h @@ -45,6 +45,31 @@ static inline struct kmem_cache *__kmem_cache_alias(const char *name, size_t siz #endif +/* Legal flag mask for kmem_cache_create(), for various configurations */ +#define SLAB_CORE_FLAGS (SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA | SLAB_PANIC | \ +SLAB_DESTROY_BY_RCU | SLAB_DEBUG_OBJECTS ) + +#if defined(CONFIG_DEBUG_SLAB) +#define SLAB_DEBUG_FLAGS (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER) +#elif defined(CONFIG_SLUB_DEBUG) +#define SLAB_DEBUG_FLAGS (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER | \ + SLAB_TRACE | SLAB_DEBUG_FREE) +#else +#define SLAB_DEBUG_FLAGS (0) +#endif + +#if defined(CONFIG_SLAB) +#define SLAB_CACHE_FLAGS (SLAB_MEMSPREAD | SLAB_NOLEAKTRACE | \ s/SLAB_MEMSPREAD/SLAB_MEM_SPREAD/ Did you have a v5 of this patch with the above fix? Yes, I sent it bundled in my kmemcg-slab series. I can send it separately as well, no problem. (Or we can merge the series!!! =p ) -- 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 v4] slab: Ignore internal flags in cache creation
On Mon, 8 Oct 2012, David Rientjes wrote: > > diff --git a/mm/slab.h b/mm/slab.h > > index 7deeb44..4c35c17 100644 > > --- a/mm/slab.h > > +++ b/mm/slab.h > > @@ -45,6 +45,31 @@ static inline struct kmem_cache > > *__kmem_cache_alias(const char *name, size_t siz > > #endif > > > > > > +/* Legal flag mask for kmem_cache_create(), for various configurations */ > > +#define SLAB_CORE_FLAGS (SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA | SLAB_PANIC > > | \ > > +SLAB_DESTROY_BY_RCU | SLAB_DEBUG_OBJECTS ) > > + > > +#if defined(CONFIG_DEBUG_SLAB) > > +#define SLAB_DEBUG_FLAGS (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER) > > +#elif defined(CONFIG_SLUB_DEBUG) > > +#define SLAB_DEBUG_FLAGS (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER | \ > > + SLAB_TRACE | SLAB_DEBUG_FREE) > > +#else > > +#define SLAB_DEBUG_FLAGS (0) > > +#endif > > + > > +#if defined(CONFIG_SLAB) > > +#define SLAB_CACHE_FLAGS (SLAB_MEMSPREAD | SLAB_NOLEAKTRACE | \ > > s/SLAB_MEMSPREAD/SLAB_MEM_SPREAD/ > Did you have a v5 of this patch with the above fix? -- 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 v4] slab: Ignore internal flags in cache creation
On Mon, 8 Oct 2012, David Rientjes wrote: diff --git a/mm/slab.h b/mm/slab.h index 7deeb44..4c35c17 100644 --- a/mm/slab.h +++ b/mm/slab.h @@ -45,6 +45,31 @@ static inline struct kmem_cache *__kmem_cache_alias(const char *name, size_t siz #endif +/* Legal flag mask for kmem_cache_create(), for various configurations */ +#define SLAB_CORE_FLAGS (SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA | SLAB_PANIC | \ +SLAB_DESTROY_BY_RCU | SLAB_DEBUG_OBJECTS ) + +#if defined(CONFIG_DEBUG_SLAB) +#define SLAB_DEBUG_FLAGS (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER) +#elif defined(CONFIG_SLUB_DEBUG) +#define SLAB_DEBUG_FLAGS (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER | \ + SLAB_TRACE | SLAB_DEBUG_FREE) +#else +#define SLAB_DEBUG_FLAGS (0) +#endif + +#if defined(CONFIG_SLAB) +#define SLAB_CACHE_FLAGS (SLAB_MEMSPREAD | SLAB_NOLEAKTRACE | \ s/SLAB_MEMSPREAD/SLAB_MEM_SPREAD/ Did you have a v5 of this patch with the above fix? -- 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 v4] slab: Ignore internal flags in cache creation
On Fri, 5 Oct 2012, Glauber Costa wrote: > diff --git a/mm/slab.h b/mm/slab.h > index 7deeb44..4c35c17 100644 > --- a/mm/slab.h > +++ b/mm/slab.h > @@ -45,6 +45,31 @@ static inline struct kmem_cache *__kmem_cache_alias(const > char *name, size_t siz > #endif > > > +/* Legal flag mask for kmem_cache_create(), for various configurations */ > +#define SLAB_CORE_FLAGS (SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA | SLAB_PANIC | \ > + SLAB_DESTROY_BY_RCU | SLAB_DEBUG_OBJECTS ) > + > +#if defined(CONFIG_DEBUG_SLAB) > +#define SLAB_DEBUG_FLAGS (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER) > +#elif defined(CONFIG_SLUB_DEBUG) > +#define SLAB_DEBUG_FLAGS (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER | \ > + SLAB_TRACE | SLAB_DEBUG_FREE) > +#else > +#define SLAB_DEBUG_FLAGS (0) > +#endif > + > +#if defined(CONFIG_SLAB) > +#define SLAB_CACHE_FLAGS (SLAB_MEMSPREAD | SLAB_NOLEAKTRACE | \ s/SLAB_MEMSPREAD/SLAB_MEM_SPREAD/ > + SLAB_RECLAIM_ACCOUNT | SLAB_TEMPORARY | SLAB_NOTRACK) > +#elif defined(CONFIG_SLUB) > +#define SLAB_CACHE_FLAGS (SLAB_NOLEAKTRACE | SLAB_RECLAIM_ACCOUNT | \ > + SLAB_TEMPORARY | SLAB_NOTRACK) > +#else > +#define SLAB_CACHE_FLAGS (0) > +#endif > + > +#define CACHE_CREATE_MASK (SLAB_CORE_FLAGS | SLAB_DEBUG_FLAGS | > SLAB_CACHE_FLAGS) > + > int __kmem_cache_shutdown(struct kmem_cache *); > > #endif -- 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 v4] slab: Ignore internal flags in cache creation
On Fri, 5 Oct 2012, Glauber Costa wrote: diff --git a/mm/slab.h b/mm/slab.h index 7deeb44..4c35c17 100644 --- a/mm/slab.h +++ b/mm/slab.h @@ -45,6 +45,31 @@ static inline struct kmem_cache *__kmem_cache_alias(const char *name, size_t siz #endif +/* Legal flag mask for kmem_cache_create(), for various configurations */ +#define SLAB_CORE_FLAGS (SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA | SLAB_PANIC | \ + SLAB_DESTROY_BY_RCU | SLAB_DEBUG_OBJECTS ) + +#if defined(CONFIG_DEBUG_SLAB) +#define SLAB_DEBUG_FLAGS (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER) +#elif defined(CONFIG_SLUB_DEBUG) +#define SLAB_DEBUG_FLAGS (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER | \ + SLAB_TRACE | SLAB_DEBUG_FREE) +#else +#define SLAB_DEBUG_FLAGS (0) +#endif + +#if defined(CONFIG_SLAB) +#define SLAB_CACHE_FLAGS (SLAB_MEMSPREAD | SLAB_NOLEAKTRACE | \ s/SLAB_MEMSPREAD/SLAB_MEM_SPREAD/ + SLAB_RECLAIM_ACCOUNT | SLAB_TEMPORARY | SLAB_NOTRACK) +#elif defined(CONFIG_SLUB) +#define SLAB_CACHE_FLAGS (SLAB_NOLEAKTRACE | SLAB_RECLAIM_ACCOUNT | \ + SLAB_TEMPORARY | SLAB_NOTRACK) +#else +#define SLAB_CACHE_FLAGS (0) +#endif + +#define CACHE_CREATE_MASK (SLAB_CORE_FLAGS | SLAB_DEBUG_FLAGS | SLAB_CACHE_FLAGS) + int __kmem_cache_shutdown(struct kmem_cache *); #endif -- 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 v4] slab: Ignore internal flags in cache creation
On Fri, 5 Oct 2012, Glauber Costa wrote: > Common code will mask out all flags not belonging to that set. Acked-by: Christoph Lameter -- 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 v4] slab: Ignore internal flags in cache creation
Some flags are used internally by the allocators for management
purposes. One example of that is the CFLGS_OFF_SLAB flag that slab uses
to mark that the metadata for that cache is stored outside of the slab.
No cache should ever pass those as a creation flags. We can just ignore
this bit if it happens to be passed (such as when duplicating a cache in
the kmem memcg patches).
Because such flags can vary from allocator to allocator, we allow them
to make their own decisions on that, defining SLAB_AVAILABLE_FLAGS with
all flags that are valid at creation time. Allocators that doesn't have
any specific flag requirement should define that to mean all flags.
Common code will mask out all flags not belonging to that set.
[ v2: leave the mask out decision up to the allocators ]
[ v3: define flags for all allocators ]
[ v4: move all definitions to slab.h ]
Signed-off-by: Glauber Costa
CC: Christoph Lameter
CC: David Rientjes
CC: Pekka Enberg
---
mm/slab.c| 22 --
mm/slab.h| 25 +
mm/slab_common.c | 7 +++
mm/slub.c| 3 ---
4 files changed, 32 insertions(+), 25 deletions(-)
diff --git a/mm/slab.c b/mm/slab.c
index 87569af..eafef58 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -162,23 +162,6 @@
*/
static bool pfmemalloc_active __read_mostly;
-/* Legal flag mask for kmem_cache_create(). */
-#if DEBUG
-# define CREATE_MASK (SLAB_RED_ZONE | \
-SLAB_POISON | SLAB_HWCACHE_ALIGN | \
-SLAB_CACHE_DMA | \
-SLAB_STORE_USER | \
-SLAB_RECLAIM_ACCOUNT | SLAB_PANIC | \
-SLAB_DESTROY_BY_RCU | SLAB_MEM_SPREAD | \
-SLAB_DEBUG_OBJECTS | SLAB_NOLEAKTRACE | SLAB_NOTRACK)
-#else
-# define CREATE_MASK (SLAB_HWCACHE_ALIGN | \
-SLAB_CACHE_DMA | \
-SLAB_RECLAIM_ACCOUNT | SLAB_PANIC | \
-SLAB_DESTROY_BY_RCU | SLAB_MEM_SPREAD | \
-SLAB_DEBUG_OBJECTS | SLAB_NOLEAKTRACE | SLAB_NOTRACK)
-#endif
-
/*
* kmem_bufctl_t:
*
@@ -2385,11 +2368,6 @@ __kmem_cache_create (struct kmem_cache *cachep, unsigned
long flags)
if (flags & SLAB_DESTROY_BY_RCU)
BUG_ON(flags & SLAB_POISON);
#endif
- /*
-* Always checks flags, a caller might be expecting debug support which
-* isn't available.
-*/
- BUG_ON(flags & ~CREATE_MASK);
/*
* Check that size is in terms of words. This is needed to avoid
diff --git a/mm/slab.h b/mm/slab.h
index 7deeb44..4c35c17 100644
--- a/mm/slab.h
+++ b/mm/slab.h
@@ -45,6 +45,31 @@ static inline struct kmem_cache *__kmem_cache_alias(const
char *name, size_t siz
#endif
+/* Legal flag mask for kmem_cache_create(), for various configurations */
+#define SLAB_CORE_FLAGS (SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA | SLAB_PANIC | \
+SLAB_DESTROY_BY_RCU | SLAB_DEBUG_OBJECTS )
+
+#if defined(CONFIG_DEBUG_SLAB)
+#define SLAB_DEBUG_FLAGS (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER)
+#elif defined(CONFIG_SLUB_DEBUG)
+#define SLAB_DEBUG_FLAGS (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER | \
+ SLAB_TRACE | SLAB_DEBUG_FREE)
+#else
+#define SLAB_DEBUG_FLAGS (0)
+#endif
+
+#if defined(CONFIG_SLAB)
+#define SLAB_CACHE_FLAGS (SLAB_MEMSPREAD | SLAB_NOLEAKTRACE | \
+ SLAB_RECLAIM_ACCOUNT | SLAB_TEMPORARY | SLAB_NOTRACK)
+#elif defined(CONFIG_SLUB)
+#define SLAB_CACHE_FLAGS (SLAB_NOLEAKTRACE | SLAB_RECLAIM_ACCOUNT | \
+ SLAB_TEMPORARY | SLAB_NOTRACK)
+#else
+#define SLAB_CACHE_FLAGS (0)
+#endif
+
+#define CACHE_CREATE_MASK (SLAB_CORE_FLAGS | SLAB_DEBUG_FLAGS |
SLAB_CACHE_FLAGS)
+
int __kmem_cache_shutdown(struct kmem_cache *);
#endif
diff --git a/mm/slab_common.c b/mm/slab_common.c
index 9c21725..0e2b8e3 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -107,6 +107,13 @@ struct kmem_cache *kmem_cache_create(const char *name,
size_t size, size_t align
if (!kmem_cache_sanity_check(name, size) == 0)
goto out_locked;
+ /*
+* Some allocators will constraint the set of valid flags to a subset
+* of all flags. We expect them to define CACHE_CREATE_MASK in this
+* case, and we'll just provide them with a sanitized version of the
+* passed flags.
+*/
+ flags &= CACHE_CREATE_MASK;
s = __kmem_cache_alias(name, size, align, flags, ctor);
if (s)
diff --git a/mm/slub.c b/mm/slub.c
index 628a261..f50c5b2 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -112,9 +112,6 @@
* the fast path and disables lockless freelists.
*/
-#define SLAB_DEBUG_FLAGS (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER | \
- SLAB_TRACE | SLAB_DEBUG_FREE)
-
static inline int kmem_cache_debug(struct kmem_cache *s)
{
#ifdef CONFIG_SLUB_DEBUG
--
1.7.11.4
--
[PATCH v4] slab: Ignore internal flags in cache creation
Some flags are used internally by the allocators for management purposes. One example of that is the CFLGS_OFF_SLAB flag that slab uses to mark that the metadata for that cache is stored outside of the slab. No cache should ever pass those as a creation flags. We can just ignore this bit if it happens to be passed (such as when duplicating a cache in the kmem memcg patches). Because such flags can vary from allocator to allocator, we allow them to make their own decisions on that, defining SLAB_AVAILABLE_FLAGS with all flags that are valid at creation time. Allocators that doesn't have any specific flag requirement should define that to mean all flags. Common code will mask out all flags not belonging to that set. [ v2: leave the mask out decision up to the allocators ] [ v3: define flags for all allocators ] [ v4: move all definitions to slab.h ] Signed-off-by: Glauber Costa glom...@parallels.com CC: Christoph Lameter c...@linux.com CC: David Rientjes rient...@google.com CC: Pekka Enberg penb...@cs.helsinki.fi --- mm/slab.c| 22 -- mm/slab.h| 25 + mm/slab_common.c | 7 +++ mm/slub.c| 3 --- 4 files changed, 32 insertions(+), 25 deletions(-) diff --git a/mm/slab.c b/mm/slab.c index 87569af..eafef58 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -162,23 +162,6 @@ */ static bool pfmemalloc_active __read_mostly; -/* Legal flag mask for kmem_cache_create(). */ -#if DEBUG -# define CREATE_MASK (SLAB_RED_ZONE | \ -SLAB_POISON | SLAB_HWCACHE_ALIGN | \ -SLAB_CACHE_DMA | \ -SLAB_STORE_USER | \ -SLAB_RECLAIM_ACCOUNT | SLAB_PANIC | \ -SLAB_DESTROY_BY_RCU | SLAB_MEM_SPREAD | \ -SLAB_DEBUG_OBJECTS | SLAB_NOLEAKTRACE | SLAB_NOTRACK) -#else -# define CREATE_MASK (SLAB_HWCACHE_ALIGN | \ -SLAB_CACHE_DMA | \ -SLAB_RECLAIM_ACCOUNT | SLAB_PANIC | \ -SLAB_DESTROY_BY_RCU | SLAB_MEM_SPREAD | \ -SLAB_DEBUG_OBJECTS | SLAB_NOLEAKTRACE | SLAB_NOTRACK) -#endif - /* * kmem_bufctl_t: * @@ -2385,11 +2368,6 @@ __kmem_cache_create (struct kmem_cache *cachep, unsigned long flags) if (flags SLAB_DESTROY_BY_RCU) BUG_ON(flags SLAB_POISON); #endif - /* -* Always checks flags, a caller might be expecting debug support which -* isn't available. -*/ - BUG_ON(flags ~CREATE_MASK); /* * Check that size is in terms of words. This is needed to avoid diff --git a/mm/slab.h b/mm/slab.h index 7deeb44..4c35c17 100644 --- a/mm/slab.h +++ b/mm/slab.h @@ -45,6 +45,31 @@ static inline struct kmem_cache *__kmem_cache_alias(const char *name, size_t siz #endif +/* Legal flag mask for kmem_cache_create(), for various configurations */ +#define SLAB_CORE_FLAGS (SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA | SLAB_PANIC | \ +SLAB_DESTROY_BY_RCU | SLAB_DEBUG_OBJECTS ) + +#if defined(CONFIG_DEBUG_SLAB) +#define SLAB_DEBUG_FLAGS (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER) +#elif defined(CONFIG_SLUB_DEBUG) +#define SLAB_DEBUG_FLAGS (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER | \ + SLAB_TRACE | SLAB_DEBUG_FREE) +#else +#define SLAB_DEBUG_FLAGS (0) +#endif + +#if defined(CONFIG_SLAB) +#define SLAB_CACHE_FLAGS (SLAB_MEMSPREAD | SLAB_NOLEAKTRACE | \ + SLAB_RECLAIM_ACCOUNT | SLAB_TEMPORARY | SLAB_NOTRACK) +#elif defined(CONFIG_SLUB) +#define SLAB_CACHE_FLAGS (SLAB_NOLEAKTRACE | SLAB_RECLAIM_ACCOUNT | \ + SLAB_TEMPORARY | SLAB_NOTRACK) +#else +#define SLAB_CACHE_FLAGS (0) +#endif + +#define CACHE_CREATE_MASK (SLAB_CORE_FLAGS | SLAB_DEBUG_FLAGS | SLAB_CACHE_FLAGS) + int __kmem_cache_shutdown(struct kmem_cache *); #endif diff --git a/mm/slab_common.c b/mm/slab_common.c index 9c21725..0e2b8e3 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c @@ -107,6 +107,13 @@ struct kmem_cache *kmem_cache_create(const char *name, size_t size, size_t align if (!kmem_cache_sanity_check(name, size) == 0) goto out_locked; + /* +* Some allocators will constraint the set of valid flags to a subset +* of all flags. We expect them to define CACHE_CREATE_MASK in this +* case, and we'll just provide them with a sanitized version of the +* passed flags. +*/ + flags = CACHE_CREATE_MASK; s = __kmem_cache_alias(name, size, align, flags, ctor); if (s) diff --git a/mm/slub.c b/mm/slub.c index 628a261..f50c5b2 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -112,9 +112,6 @@ * the fast path and disables lockless freelists. */ -#define SLAB_DEBUG_FLAGS (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER | \ - SLAB_TRACE | SLAB_DEBUG_FREE) - static inline int
Re: [PATCH v4] slab: Ignore internal flags in cache creation
On Fri, 5 Oct 2012, Glauber Costa wrote: Common code will mask out all flags not belonging to that set. Acked-by: Christoph Lameter c...@linux.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/
