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link_path_walk: handle get_link() returning ERR_PTR() immediately

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If we get ERR_PTR() from get_link(), we are guaranteed to get err != 0
when we break out of do-while, so we are going to hit if (err) return err;
shortly after it.  Pull that into the if (IS_ERR(s)) body.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2015-04-18 19:10:36 -04:00
parent 95fa25d9f2
commit b0c24c3bdf
1 changed files with 3 additions and 1 deletions
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4
fs/namei.c
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@ -1792,7 +1792,9 @@ static int link_path_walk(const char *name, struct nameidata *nd)
if (unlikely(IS_ERR(s))) {
err = PTR_ERR(s);
break;
current->link_count--;
nd->depth--;
return err;
}
err = 0;
if (likely(s)) {