mm/vmpressure.c: use kstrndup instead of kmalloc+strncpy
Using kstrndup() simplifies the code. Link: http://lkml.kernel.org/r/20180503201807.24941-1-andriy.shevchenko@linux.intel.com Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -390,12 +390,11 @@ int vmpressure_register_event(struct mem_cgroup *memcg,
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char *token;
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int ret = 0;
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spec_orig = spec = kzalloc(MAX_VMPRESSURE_ARGS_LEN + 1, GFP_KERNEL);
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spec_orig = spec = kstrndup(args, MAX_VMPRESSURE_ARGS_LEN, GFP_KERNEL);
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if (!spec) {
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ret = -ENOMEM;
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goto out;
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}
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strncpy(spec, args, MAX_VMPRESSURE_ARGS_LEN);
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/* Find required level */
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token = strsep(&spec, ",");
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