[PATCH 0/4] inode diet, part2 - size fields

[Christoph Hellwig <hch@xxxxxxxxxxxxx>]

This series is a bit more complicated than the previous one, that's
why I'm sending it out separately.

It removes the i_size and i_new_size fields from the xfs_inode, which
is both reduces the size of the xfs_inode and code complexity around
managing the various inodes sizes significantly.  This reduces
complexity of only managing 2 instead of four inode sizes also is
a preparation for the next series which will always log inode size
updates instead of using VFS dirty tracking for it.