tree 1dab3bca657f98015fed634bf08e2cc9742741f6
parent 6379ef9fb2482a92b5fe09f927d6ce1f989c0c6d
author Josef Bacik <jbacik@fusionio.com> 1370019876 -0400
committer Chris Mason <chris.mason@fusionio.com> 1370718473 -0400

Btrfs: init relocate extent_io_tree with a mapping

Dave reported a NULL pointer deref.  This is caused because he thought he'd be
smart and add sanity checks to the extent_io bit operations, but he didn't
expect a tree to have a NULL mapping.  To fix this we just need to init the
relocation's processed_blocks with the btree_inode->i_mapping.  Thanks,

Reported-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>