From: Sami Liedes <sliedes@cc.hut.fi>
Date: Mon, 3 Nov 2008 00:23:30 +0000 (-0500)
Subject: jbd2: deregister proc on failure in jbd2_journal_init_inode
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=2423840ded13e6d3b52d88aff8d033bb78fafd08;p=linux-beck.git

jbd2: deregister proc on failure in jbd2_journal_init_inode

jbd2_journal_init_inode() does not call jbd2_stats_proc_exit() on all
failure paths after calling jbd2_stats_proc_init(). This leaves
dangling references to the fs in proc.

This patch fixes a bug reported by Sami Leides at:
http://bugzilla.kernel.org/show_bug.cgi?id=11493

Signed-off-by: Sami Liedes <sliedes@cc.hut.fi>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
---

diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 783de118de92..e70d657a19f8 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -1089,6 +1089,7 @@ journal_t * jbd2_journal_init_inode (struct inode *inode)
 	if (!journal->j_wbuf) {
 		printk(KERN_ERR "%s: Cant allocate bhs for commit thread\n",
 			__func__);
+		jbd2_stats_proc_exit(journal);
 		kfree(journal);
 		return NULL;
 	}
@@ -1098,6 +1099,7 @@ journal_t * jbd2_journal_init_inode (struct inode *inode)
 	if (err) {
 		printk(KERN_ERR "%s: Cannnot locate journal superblock\n",
 		       __func__);
+		jbd2_stats_proc_exit(journal);
 		kfree(journal);
 		return NULL;
 	}