From mboxrd@z Thu Jan  1 00:00:00 1970
From: ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org (Eric W. Biederman)
Subject: Re: [PATCH] userns: fix return value in map_write
Date: Tue, 09 Oct 2012 21:06:26 -0700
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	feng's message of "Wed, 10 Oct 2012 11:57:55 +0800")
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Gao feng <gaofeng-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org> writes:

> If the map is already set,we should return -EINVAL.

What makes -EINVAL a better return code?

Eric