linux-ext4 - [PATCH] ext4: error proc entry creation when the fs/ext4 is not correctly created

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Message-ID: <482D56B7.1030607@cn.fujitsu.com>
Date:	Fri, 16 May 2008 17:41:11 +0800
From:	Shen Feng <shen@...fujitsu.com>
To:	linux-ext4@...r.kernel.org, Theodore Tso <tytso@....EDU>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH] ext4: error proc entry creation when the fs/ext4 is not correctly
 created

When the directory fs/ext4 is not correctly created under proc,
the entry under this directory should not be created.

Signed-off-by: Shen Feng <shen@...fujitsu.com>
---
 fs/ext4/mballoc.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index b128bdc..3c616f2 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2639,6 +2639,10 @@ static int ext4_mb_init_per_dev_proc(struct super_block *sb)
 	struct proc_dir_entry *proc;
 	char devname[64];

+	if (proc_root_ext4 == NULL) {
+		sbi->s_mb_proc = NULL;
+		return -EINVAL;
+	}
 	bdevname(sb->s_bdev, devname);
 	sbi->s_mb_proc = proc_mkdir(devname, proc_root_ext4);

-- 
1.5.4.1
--
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