From c1cbdacfc3244e1719ce1774efa98ca632e413b1 Mon Sep 17 00:00:00 2001
From: Yu Jian <yujian@whamcloud.com>
Date: Mon, 1 Aug 2011 17:41:39 -0400
Subject: [PATCH] --- yaml --- r: 262138 b: refs/heads/master c:
 48e6061bf4bb25eec151b91f22fd90a5b9a4920a h: refs/heads/master v: v3

---
 [refs]                  | 2 +-
 trunk/fs/ext4/mballoc.c | 6 +++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/[refs] b/[refs]
index deb165a8e3b0..39a016765d55 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 9d8b9ec44234b2f6e0225300632d250210c04f11
+refs/heads/master: 48e6061bf4bb25eec151b91f22fd90a5b9a4920a
diff --git a/trunk/fs/ext4/mballoc.c b/trunk/fs/ext4/mballoc.c
index 70d1b3e64284..e41620b56e53 100644
--- a/trunk/fs/ext4/mballoc.c
+++ b/trunk/fs/ext4/mballoc.c
@@ -2342,7 +2342,11 @@ static int ext4_mb_init_backend(struct super_block *sb)
 		ext4_msg(sb, KERN_ERR, "can't get new inode");
 		goto err_freesgi;
 	}
-	sbi->s_buddy_cache->i_ino = get_next_ino();
+	/* To avoid potentially colliding with an valid on-disk inode number,
+	 * use EXT4_BAD_INO for the buddy cache inode number.  This inode is
+	 * not in the inode hash, so it should never be found by iget(), but
+	 * this will avoid confusion if it ever shows up during debugging. */
+	sbi->s_buddy_cache->i_ino = EXT4_BAD_INO;
 	EXT4_I(sbi->s_buddy_cache)->i_disksize = 0;
 	for (i = 0; i < ngroups; i++) {
 		desc = ext4_get_group_desc(sb, i, NULL);