[PATCH 0/5] btrfs: raid56: part 1, refactor/cleanup

[Qu Wenruo <wqu@suse.com>]

This is the cleanup/refactor part for the incoming RAID56 feature, which
will do data checksum verification during RMW cycle to address
destructive RMW.

The important parts of the cleanup are:

- Make pointer members of btrfs_raid_bio to be allocated separately
  This will make later expanding (csum_buf and csum_bitmap) easier.

- Make it explicit that all cached rbio should have all its data sectors
  uptodate
  This means, if we steal one rbio, all the data sectors should be
  uptodate.

Qu Wenruo (5):
  btrfs: raid56: properly handle the error when unable to find the
    missing stripe
  btrfs: raid56: avoid double freeing for rbio if full_stripe_write()
    failed
  btrfs: raid56: cleanup for function __free_raid_bio()
  btrfs: raid56: allocate memory separately for rbio pointers
  btrfs: raid56: make it more explicit that cache rbio should have all
    its data sectors uptodate

 fs/btrfs/raid56.c | 189 +++++++++++++++++++++++++++-------------------
 1 file changed, 113 insertions(+), 76 deletions(-)

-- 
2.37.3