[GIT PULL] bcachefs fixes for 6.7.y

[Kent Overstreet]

The following changes since commit 2e7cdd29fc42c410eab52fffe5710bf656619222:

  Linux 6.7.9 (2024-03-06 14:54:01 +0000)

are available in the Git repository at:

  https://evilpiepirate.org/git/bcachefs.git tags/bcachefs-for-v6.7-stable-20240310

for you to fetch changes up to 560ceb6a4d9e3bea57c29f5f3a7a1d671dfc7983:

  bcachefs: Fix BTREE_ITER_FILTER_SNAPSHOTS on inodes btree (2024-03-10 14:36:57 -0400)

----------------------------------------------------------------
bcachefs fixes for 6.7 stable

"bcachefs: fix simulateously upgrading & downgrading" is the important
one here. This fixes a really nasty bug where in a rare situation we
wouldn't downgrade; we'd write a superblock where the version number is
higher than the currently supported version.

This caused total failure to mount multi device filesystems with the
splitbrain checking in 6.8, since now we wouldn't be updating the member
sequence numbers used for splitbrain checking, but the version number
said we would be - and newer versions would attempt to kick every device
out of the fs.

----------------------------------------------------------------
Helge Deller (1):
      bcachefs: Fix build on parisc by avoiding __multi3()

Kent Overstreet (3):
      bcachefs: check for failure to downgrade
      bcachefs: fix simulateously upgrading & downgrading
      bcachefs: Fix BTREE_ITER_FILTER_SNAPSHOTS on inodes btree

Mathias Krause (1):
      bcachefs: install fd later to avoid race with close

 fs/bcachefs/btree_iter.c        |  4 +++-
 fs/bcachefs/chardev.c           |  3 +--
 fs/bcachefs/errcode.h           |  1 +
 fs/bcachefs/mean_and_variance.h |  2 +-
 fs/bcachefs/super-io.c          | 27 ++++++++++++++++++++++++---
 5 files changed, 30 insertions(+), 7 deletions(-)