xfs_repair: rebuild block mappings from rmapbt data

Use rmap records to rebuild corrupt inode forks instead of zapping
the whole inode if we think the rmap data is reasonably sane.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bill O'Donnell <bodonnel@redhat.com>
13 files changed