Fix cg_read_strcmp()
Fix a couple issues with cg_read_strcmp(), to improve correctness of cgroup tests - Fix cg_read_strcmp() always returning 0 for empty "needle" strings. Previously, this function read to a size = 1 buffer when comparing against empty strings, which would lead to cg_read_strcmp() comparing two empty strings. - Fix a memory leak in cg_read_strcmp() Fixes: 84092dbc ("selftests: cgroup: add memory controller self-tests") Signed-off-by: NJay Kamat <jgkamat@fb.com> Acked-by: NRoman Gushchin <guro@fb.com> Signed-off-by: NShuah Khan (Samsung OSG) <shuah@kernel.org>
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