> On Tue, 25 Mar 2008 14:47:13 +0900 (JST) yamamoto@xxxxxxxxxxxxx (YAMAMOTO Takashi) wrote:
>
> > [ resending with To: akpm. Andrew, can you include this in -mm tree? ]
>
> Shouldn't it be in 2.6.25?
yes, probably.
(i'm not sure about linux development model.)
YAMAMOTO Takashi
>
> > hi,
> >
> > the following patch is to fix spurious EBUSY on cgroup removal.
> >
> > YAMAMOTO Takashi
> >
> >
> > call mm_free_cgroup earlier.
> > otherwise a reference due to lazy mm switching can prevent cgroup removal.
> >
> > Signed-off-by: YAMAMOTO Takashi <yamamoto@xxxxxxxxxxxxx>
> > Acked-by: Balbir Singh <balbir@xxxxxxxxxxxxxxxxxx>
> > ---
> >
> > --- linux-2.6.24-rc8-mm1/kernel/fork.c.BACKUP 2008-01-23 14:43:29.000000000 +0900
> > +++ linux-2.6.24-rc8-mm1/kernel/fork.c 2008-01-31 17:26:31.000000000 +0900
> > @@ -393,7 +393,6 @@ void __mmdrop(struct mm_struct *mm)
> > {
> > BUG_ON(mm == &init_mm);
> > mm_free_pgd(mm);
> > - mm_free_cgroup(mm);
> > destroy_context(mm);
> > free_mm(mm);
> > }
> > @@ -415,6 +414,7 @@ void mmput(struct mm_struct *mm)
> > spin_unlock(&mmlist_lock);
> > }
> > put_swap_token(mm);
> > + mm_free_cgroup(mm);
> > mmdrop(mm);
> > }
> > }
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