linux-kernel - Re: [PATCH 01/34] VFS: Make clone_mnt() and copy

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Date:	Mon, 20 Sep 2010 23:26:42 +0200
From:	Andreas Gruenbacher <agruen@...e.de>
To:	Valerie Aurora <vaurora@...hat.com>
Cc:	Alexander Viro <viro@...iv.linux.org.uk>,
	Miklos Szeredi <miklos@...redi.hu>,
	Christoph Hellwig <hch@...radead.org>,
	Nick Piggin <npiggin@...nel.dk>, linux-kernel@...r.kernel.org,
	linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH 01/34] VFS: Make clone_mnt() and copy_tree() return error codes

collect_mounts() now also returns error pointers instead of NULL upon
failure:

diff --git a/kernel/audit_tree.c b/kernel/audit_tree.c
index 46a57b5..898da28 100644
--- a/kernel/audit_tree.c
+++ b/kernel/audit_tree.c
@@ -579,7 +579,7 @@ void audit_trim_trees(void)
 
 		root_mnt = collect_mounts(&path);
 		path_put(&path);
-		if (!root_mnt)
+		if (IS_ERR(root_mnt))
 			goto skip_it;
 
 		spin_lock(&hash_lock);
@@ -651,8 +651,8 @@ int audit_add_tree_rule(struct audit_krule *rule)
 		goto Err;
 	mnt = collect_mounts(&path);
 	path_put(&path);
-	if (!mnt) {
-		err = -ENOMEM;
+	if (IS_ERR(mnt)) {
+		err = PTR_ERR(mnt);
 		goto Err;
 	}
 
@@ -701,8 +701,8 @@ int audit_tag_tree(char *old, char *new)
 		return err;
 	tagged = collect_mounts(&path2);
 	path_put(&path2);
-	if (!tagged)
-		return -ENOMEM;
+	if (IS_ERR(tagged))
+		return PTR_ERR(tagged);
 
 	err = kern_path(old, 0, &path1);
 	if (err) {
-- 
1.7.3.rc2
--
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