[PATCH 0/4] XFS: replace the mount inode list with radix tree traversals V2

[Dave Chinner <david@xxxxxxxxxxxxx>]

The list of all inodes on a mount is superfluous. We can traverse
all inodes now by walking the per-AG inode radix trees without
needing a separate list. This enables us to remove a bunch of
complex list traversal code and remove another two pointers from
the xfs_inode.

Also, by replacing the sync traversal with an ascending inode
number traversal, we will issue better inode I/O patterns for
writeback triggered by xfssyncd or unmount.