| Message ID | 1368604111-25073-3-git-send-email-miaox@cn.fujitsu.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 7f6e78a..bf5c399 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -4839,14 +4839,13 @@ static void inode_tree_add(struct inode *inode) struct rb_node **p; struct rb_node *parent; u64 ino = btrfs_ino(inode); -again: - p = &root->inode_tree.rb_node; - parent = NULL; if (inode_unhashed(inode)) return; - +again: + parent = NULL; spin_lock(&root->inode_lock); + p = &root->inode_tree.rb_node; while (*p) { parent = *p; entry = rb_entry(parent, struct btrfs_inode, rb_node);
The root node of the rb-tree may be changed, so we should get it under the lock. Fix it. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> --- fs/btrfs/inode.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-)