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[STABLE,5.18,0/2] btrfs: raid56: backports to reduce corruption

Message ID cover.1660894086.git.wqu@suse.com (mailing list archive)
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Series btrfs: raid56: backports to reduce corruption | expand

Message

Qu Wenruo Aug. 19, 2022, 7:40 a.m. UTC 
This is the backport for v5.18.x stable branch.

The full explananation can be found here:
https://lore.kernel.org/linux-btrfs/Yv85PTBsDhrQITZp@kroah.com/T/#t

Difference between v5.18.x and v5.19.x backports:

- Subpage sector::uptodate related changes
  Since v5.18 and older branches doesn't support subpage RAID56, these
  uptodate checks are now in their older PageUptodate form.

- Various member naming changes
  Like btrfs_raid_bio::stripe_npages -> stripe_nsector.

Qu Wenruo (2):
  btrfs: only write the sectors in the vertical stripe which has data
    stripes
  btrfs: raid56: don't trust any cached sector in
    __raid56_parity_recover()

 fs/btrfs/raid56.c | 74 ++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 57 insertions(+), 17 deletions(-)