Re: [PATCH] cgroup: Fix uninitialized variable warning

[Tejun Heo]

On Wed, Dec 23, 2015 at 02:53:27PM -0700, Ross Zwisler wrote:
> Commit 1f7dd3e5a6e4 ("cgroup: fix handling of multi-destination migration
> from subtree_control enabling") introduced the following compiler warning:
> 
> mm/memcontrol.c: In function âmem_cgroup_can_attachâ:
> mm/memcontrol.c:4790:9: warning: âmemcgâ may be used uninitialized in this function [-Wmaybe-uninitialized]
>    mc.to = memcg;
>          ^
> 
> Fix this by initializing 'memcg' to NULL.
> 
> This was found using gcc (GCC) 4.9.2 20150212 (Red Hat 4.9.2-6).
> 
> Signed-off-by: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx>

Applied to cgroup/for-4.5.

Thanks.

-- 
tejun
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