On Wed, 21 May 2008 20:59:59 +0530 Balbir Singh <balbir@linux.vnet.ibm.com> wrote:

quoted text
> 
> This patch adds an additional field to the mm_owner callbacks. This field
> is required to get to the mm that changed. Hold mmap_sem in write mode
> before calling the mm_owner_changed callback
>
> ...
>
> + * The callbacks are invoked with mmap_sem held in read mode.

Is that true?

quoted text
> +	down_write(&mm->mmap_sem);
> ...
>  	cgroup_mm_owner_callbacks(mm->owner, c);

Looks like write-mode to me?
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