[patch 119/155] mm: vmpressure: don't need call kfree if kstrndup fails

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From: Yang Shi <yang.shi@xxxxxxxxxxxxxxxxx>
Subject: mm: vmpressure: don't need call kfree if kstrndup fails

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

[david@xxxxxxxxxx: reword changelog]
Link: http://lkml.kernel.org/r/1581398649-125989-1-git-send-email-yang.shi@xxxxxxxxxxxxxxxxx
Signed-off-by: Yang Shi <yang.shi@xxxxxxxxxxxxxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
Acked-by: David Rientjes <rientjes@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 mm/vmpressure.c |    6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

--- a/mm/vmpressure.c~mm-vmpressure-dont-need-call-kfree-if-kstrndup-fails
+++ a/mm/vmpressure.c
@@ -371,10 +371,8 @@ int vmpressure_register_event(struct mem
 	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, ",");
_




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