On 03/14/2012 03:21 AM, Suleiman Souhlal wrote:
On Sun, Mar 11, 2012 at 3:53 AM, Glauber Costa<glommer@xxxxxxxxxxxxx> wrote:
On 03/10/2012 12:39 AM, Suleiman Souhlal wrote:
This function returns the gfp flags that are always applied to
allocations of a kmem_cache.
Signed-off-by: Suleiman Souhlal<suleiman@xxxxxxxxxx>
---
include/linux/slab_def.h | 6 ++++++
include/linux/slob_def.h | 6 ++++++
include/linux/slub_def.h | 6 ++++++
3 files changed, 18 insertions(+), 0 deletions(-)
diff --git a/include/linux/slab_def.h b/include/linux/slab_def.h
index fbd1117..25f9a6a 100644
--- a/include/linux/slab_def.h
+++ b/include/linux/slab_def.h
@@ -159,6 +159,12 @@ found:
return __kmalloc(size, flags);
}
+static inline gfp_t
+kmem_cache_gfp_flags(struct kmem_cache *cachep)
+{
+ return cachep->gfpflags;
+}
+
#ifdef CONFIG_NUMA
extern void *__kmalloc_node(size_t size, gfp_t flags, int node);
extern void *kmem_cache_alloc_node(struct kmem_cache *, gfp_t flags, int
node);
diff --git a/include/linux/slob_def.h b/include/linux/slob_def.h
index 0ec00b3..3fa527d 100644
--- a/include/linux/slob_def.h
+++ b/include/linux/slob_def.h
@@ -34,4 +34,10 @@ static __always_inline void *__kmalloc(size_t size,
gfp_t flags)
return kmalloc(size, flags);
}
+static inline gfp_t
+kmem_cache_gfp_flags(struct kmem_cache *cachep)
+{
+ return 0;
+}
+
#endif /* __LINUX_SLOB_DEF_H */
diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index a32bcfd..5911d81 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -313,4 +313,10 @@ static __always_inline void *kmalloc_node(size_t
size, gfp_t flags, int node)
}
#endif
+static inline gfp_t
+kmem_cache_gfp_flags(struct kmem_cache *cachep)
+{
+ return cachep->allocflags;
+}
+
Why is this needed? Can't the caller just call
mem_cgroup_get_kmem_cache(cachep, flags | cachep->allocflags) ?
Because slub calls this cachep->allocflags, while slab calls it
cachep->gfpflags.
So what?
That function is only called from slab.c anyway. Let slab call it
mem_cgroup_get_kmem_cache(cachep, flags | cachep->allocflags);
and slub
mem_cgroup_get_kmem_cache(cachep, flags | cachep->gfpflags);
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>