[PATCH 0/2] ResCounter: Add res_counter_read_uint and use it in memory cgroup

[menage]

These patches simplify the code required to report values from a
res_counter object in a cgroups control file.

The first patch adds res_counter_read_uint, which simply reports the
current value for a res_counter member.

The second replaces the existing mem_cgroup_read() with a simpler
version that calls res_counter_read_uint().

Signed-off-by: Paul Menage <menage@xxxxxxxxxx>

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