On Mon, 25 Jun 2012, Glauber Costa wrote: > This flag is used to indicate to the callees that this allocation will be > serviced to the kernel. It is not supposed to be passed by the callers > of kmem_cache_alloc, but rather by the cache core itself. > Not sure what "serviced to the kernel" means, does this mean that the memory will not be accounted for to the root memcg? > CC: Christoph Lameter <cl@xxxxxxxxx> > CC: Pekka Enberg <penberg@xxxxxxxxxxxxxx> > CC: Michal Hocko <mhocko@xxxxxxx> > CC: Kamezawa Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> > CC: Johannes Weiner <hannes@xxxxxxxxxxx> > CC: Suleiman Souhlal <suleiman@xxxxxxxxxx> > --- > include/linux/gfp.h | 8 +++++++- > 1 file changed, 7 insertions(+), 1 deletion(-) > > diff --git a/include/linux/gfp.h b/include/linux/gfp.h > index 1e49be4..8f4079f 100644 > --- a/include/linux/gfp.h > +++ b/include/linux/gfp.h > @@ -37,6 +37,9 @@ struct vm_area_struct; > #define ___GFP_NO_KSWAPD 0x400000u > #define ___GFP_OTHER_NODE 0x800000u > #define ___GFP_WRITE 0x1000000u > +#ifdef CONFIG_CGROUP_MEM_RES_CTLR_KMEM > +#define ___GFP_KMEMCG 0x2000000u > +#endif > > /* > * GFP bitmasks.. > @@ -88,13 +91,16 @@ struct vm_area_struct; > #define __GFP_OTHER_NODE ((__force gfp_t)___GFP_OTHER_NODE) /* On behalf of other node */ > #define __GFP_WRITE ((__force gfp_t)___GFP_WRITE) /* Allocator intends to dirty page */ > > +#ifdef CONFIG_CGROUP_MEM_RES_CTLR_KMEM > +#define __GFP_KMEMCG ((__force gfp_t)___GFP_KMEMCG)/* Allocation comes from a memcg-accounted resource */ > +#endif Needs a space. > /* > * This may seem redundant, but it's a way of annotating false positives vs. > * allocations that simply cannot be supported (e.g. page tables). > */ > #define __GFP_NOTRACK_FALSE_POSITIVE (__GFP_NOTRACK) > > -#define __GFP_BITS_SHIFT 25 /* Room for N __GFP_FOO bits */ > +#define __GFP_BITS_SHIFT 26 /* Room for N __GFP_FOO bits */ > #define __GFP_BITS_MASK ((__force gfp_t)((1 << __GFP_BITS_SHIFT) - 1)) > > /* This equals 0, but use constants in case they ever change */ -- 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/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>