linux-kernel - [PATCH v6 03/10] audit: no need to walk list in audit

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Date:	Fri,  7 Sep 2012 07:23:40 -0400
From:	Jeff Layton <jlayton@...hat.com>
To:	eparis@...hat.com, viro@...iv.linux.org.uk
Cc:	linux-audit@...hat.com, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org, bfields@...ldses.org
Subject: [PATCH v6 03/10] audit: no need to walk list in audit_inode if name is NULL

If name is NULL then the condition in the loop will never be true. Also,
with this change, we can eliminate the check for n->name == NULL since
the equivalence check will never be true if it is.

Signed-off-by: Jeff Layton <jlayton@...hat.com>
---
 kernel/auditsc.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 5c45b9b..4099440 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -2161,11 +2161,15 @@ void __audit_inode(const char *name, const struct dentry *dentry)
 	if (!context->in_syscall)
 		return;
 
+	if (!name)
+		goto out_alloc;
+
 	list_for_each_entry_reverse(n, &context->names_list, list) {
-		if (n->name && (n->name == name))
+		if (n->name == name)
 			goto out;
 	}
 
+out_alloc:
 	/* unable to find the name from a previous getname() */
 	n = audit_alloc_name(context);
 	if (!n)
-- 
1.7.11.4

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