[PATCH V3 3/7] cxl: Keep track of mm struct associated with a context

[Andrew Donnellan]

On 29/03/17 02:14, Christophe Lombard wrote:
> The mm_struct corresponding to the current task is acquired each time
> an interrupt is raised. So to simplify the code, we only get the
> mm_struct when attaching an AFU context to the process.
> The mm_count reference is increased to ensure that the mm_struct can't
> be freed. The mm_struct will be released when the context is detached.
> A reference on mm_users is not kept to avoid a circular dependency if
> the process mmaps its cxl mmio and forget to unmap before exiting.
>
> Signed-off-by: Christophe Lombard <clombard at linux.vnet.ibm.com>

Reviewed-by: Andrew Donnellan <andrew.donnellan at au1.ibm.com>

-- 
Andrew Donnellan              OzLabs, ADL Canberra
andrew.donnellan at au1.ibm.com  IBM Australia Limited