lkml.org 
[lkml]   [2009]   [Dec]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 22/24] HWPOISON: add memory cgroup filter
On Thu, Dec 03, 2009 at 10:15:17AM +0800, Li Zefan wrote:
> > +#ifdef CONFIG_CGROUP_MEM_RES_CTLR_SWAP
> > +u32 hwpoison_filter_memcg;
> > +static int hwpoison_filter_task(struct page *p)
> > +{
> > + struct mem_cgroup *mem;
> > + struct cgroup_subsys_state *css;
> > +
> > + if (!hwpoison_filter_memcg)
> > + return 0;
> > +
> > + mem = try_get_mem_cgroup_from_page(p);
> > + if (!mem)
> > + return -EINVAL;
> > +
> > + css = mem_cgroup_css(mem);
> > + if (!css)
> > + return -EINVAL;
> > +
>
> Here, if mem != NULL, then css won't be NULL.

Good catch, thank you!

> > + css_put(css);
> > + return 0;
> > +}


\
 
 \ /
  Last update: 2009-12-03 03:23    [W:0.121 / U:0.864 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site