linux-kernel - Re: [PATCH] hugetlbfs: add err code in initializing module

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Message-ID: <CAJd=RBB3202WV4zJratpp8c8VjkipNEbB_p9bGjLKrxr7qL-RA@mail.gmail.com>
Date:	Sun, 11 Mar 2012 13:21:24 +0800
From:	Hillf Danton <dhillf@...il.com>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Al Viro <viro@...iv.linux.org.uk>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Hillf Danton <dhillf@...il.com>
Subject: Re: [PATCH] hugetlbfs: add err code in initializing module

Error code is added if fail to create inode kmem cache, and newly registered
hugetlb FS is unregistered if fail to mount, both for unlikely corner cases.

Signed-off-by: Hillf Danton <dhillf@...il.com>
---

--- a/fs/hugetlbfs/inode.c	Sun Mar 11 12:46:38 2012
+++ b/fs/hugetlbfs/inode.c	Sun Mar 11 12:49:28 2012
@@ -1000,6 +1000,7 @@ static int __init init_hugetlbfs_fs(void
 	hugetlbfs_inode_cachep = kmem_cache_create("hugetlbfs_inode_cache",
 					sizeof(struct hugetlbfs_inode_info),
 					0, 0, init_once);
+	error = -ENOMEM;
 	if (hugetlbfs_inode_cachep == NULL)
 		goto out2;

@@ -1015,6 +1016,7 @@ static int __init init_hugetlbfs_fs(void
 	}

 	error = PTR_ERR(vfsmount);
+	unregister_filesystem(&hugetlbfs_fs_type);

  out:
 	if (error)
--
--
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