Messages in this thread Patch in this message | | | Date | Sun, 16 Nov 2008 07:54:04 +0300 | From | Alexey Dobriyan <> | Subject | Re: [PATCH 3/7] memcontrol: use simple_malloc()/simple_free() |
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On Sun, Nov 16, 2008 at 07:51:28AM +0300, Alexey Dobriyan wrote: > On Sun, Nov 16, 2008 at 12:33:46PM +0800, Lai Jiangshan wrote: > > use simple_malloc()/simple_free() instead of current codes. > > struct mem_cgroup can't reach the size when kmalloc starts failing.
Or it probably can with big NR_CPUS.
struct mem_cgroup_stat { struct mem_cgroup_stat_cpu cpustat[NR_CPUS]; };
> > --- a/mm/memcontrol.c > > +++ b/mm/memcontrol.c > > @@ -1062,11 +1062,7 @@ static struct mem_cgroup *mem_cgroup_alloc(void) > > { > > struct mem_cgroup *mem; > > > > - if (sizeof(*mem) < PAGE_SIZE) > > - mem = kmalloc(sizeof(*mem), GFP_KERNEL); > > - else > > - mem = vmalloc(sizeof(*mem)); > > - > > + mem = simple_malloc(sizeof(*mem)); > > if (mem) > > memset(mem, 0, sizeof(*mem)); > > return mem; > > @@ -1074,10 +1070,7 @@ static struct mem_cgroup *mem_cgroup_alloc(void) > > > > static void mem_cgroup_free(struct mem_cgroup *mem) > > { > > - if (sizeof(*mem) < PAGE_SIZE) > > - kfree(mem); > > - else > > - vfree(mem); > > + simple_free(mem); > > }
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