Reorder the flags field in struct btrfs_header and record a flag on writeout

This allows detection of blocks that have already been written in the
running transaction so they can be recowed instead of modified again.
It is step one in trusting the transid field of the block pointers.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
3 files changed
tree: 683a7b414f269f8b999b666d5f2d6c9fb74a1ee8
  1. fs/