From af153f3ac2e095b8e024fc536520b71c459d480c Mon Sep 17 00:00:00 2001
From: Josef Bacik <josef@redhat.com>
Date: Wed, 11 Nov 2009 15:53:34 -0500
Subject: [PATCH] --- yaml --- r: 168555 b: refs/heads/master c:
 a6dbd429d8dd3382bbd9594b8d2ec74843a260d9 h: refs/heads/master i:   168553:
 ba624d98e3d263660b521008a896dccc9df35ce3   168551:
 b924c7433964ca4b9cf61c4f71d79c3304e03fc6 v: v3

---
 [refs]                 |  2 +-
 trunk/fs/btrfs/inode.c | 10 ++++++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 6eda206b1105..c4de41dd0b90 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 33b258086441dd07e00133c79fcd8cbc6a76d737
+refs/heads/master: a6dbd429d8dd3382bbd9594b8d2ec74843a260d9
diff --git a/trunk/fs/btrfs/inode.c b/trunk/fs/btrfs/inode.c
index d3d7d46a6af2..ee92801fc5db 100644
--- a/trunk/fs/btrfs/inode.c
+++ b/trunk/fs/btrfs/inode.c
@@ -5180,6 +5180,7 @@ struct inode *btrfs_alloc_inode(struct super_block *sb)
 	ei->logged_trans = 0;
 	ei->outstanding_extents = 0;
 	ei->reserved_extents = 0;
+	ei->root = NULL;
 	spin_lock_init(&ei->accounting_lock);
 	btrfs_ordered_inode_tree_init(&ei->ordered_tree);
 	INIT_LIST_HEAD(&ei->i_orphan);
@@ -5195,6 +5196,14 @@ void btrfs_destroy_inode(struct inode *inode)
 	WARN_ON(!list_empty(&inode->i_dentry));
 	WARN_ON(inode->i_data.nrpages);
 
+	/*
+	 * This can happen where we create an inode, but somebody else also
+	 * created the same inode and we need to destroy the one we already
+	 * created.
+	 */
+	if (!root)
+		goto free;
+
 	/*
 	 * Make sure we're properly removed from the ordered operation
 	 * lists.
@@ -5230,6 +5239,7 @@ void btrfs_destroy_inode(struct inode *inode)
 	}
 	inode_tree_del(inode);
 	btrfs_drop_extent_cache(inode, 0, (u64)-1, 0);
+free:
 	kmem_cache_free(btrfs_inode_cachep, BTRFS_I(inode));
 }