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mm: vmpressure: don't need call kfree if kstrndup fails 

When kstrndup fails, no memory was allocated and we can exit directly.

[david@redhat.com: reword changelog]
Signed-off-by: Yang Shi <yang.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: David Rientjes <rientjes@google.com>
Link: http://lkml.kernel.org/r/1581398649-125989-1-git-send-email-yang.shi@linux.alibaba.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Yang Shi 2020-04-01 21:09:59 -07:00 committed by Linus Torvalds
parent fe925c0cb0
commit 565dc84231
1 changed files with 2 additions and 4 deletions
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6
mm/vmpressure.c
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@ -371,10 +371,8 @@ int vmpressure_register_event(struct mem_cgroup *memcg,
int ret = 0;
spec_orig = spec = kstrndup(args, MAX_VMPRESSURE_ARGS_LEN, GFP_KERNEL);
if (!spec) {
ret = -ENOMEM;
goto out;
}
if (!spec)
return -ENOMEM;
/* Find required level */
token = strsep(&spec, ",");