putname(): IS_ERR_OR_NULL() is wrong here

Al Viro · Al Viro · commit ea47ab111669 · 2021-09-07T16:14:05.000-04:00
Mixing NULL and ERR_PTR() just in case is a Bad Idea(tm).  For
struct filename the former is wrong - failures are reported
as ERR_PTR(...), not as NULL.

Signed-off-by: Al Viro &lt;viro@zeniv.linux.org.uk&gt;
diff --git a/fs/namei.c b/fs/namei.c
@@ -255,7 +255,7 @@ getname_kernel(const char * filename)
 
 void putname(struct filename *name)
 {
-	if (IS_ERR_OR_NULL(name))
+	if (IS_ERR(name))
 		return;
 
 	BUG_ON(name->refcnt <= 0);

Original file line number	Diff line number	Diff line change
`@@ -255,7 +255,7 @@ getname_kernel(const char * filename)`
`255`	`255`
`256`	`256`	`void putname(struct filename *name)`
`257`	`257`	`{`
`258`		`- if (IS_ERR_OR_NULL(name))`
	`258`	`+ if (IS_ERR(name))`
`259`	`259`	`return;`
`260`	`260`
`261`	`261`	`BUG_ON(name->refcnt <= 0);`