[GIT PULL] Btrfs fixes for v6.0-rc3

[David Sterba]

Hi,

a few more fixes and regressions. Please pull, thanks.

- fixes:
  - check that subvolume is writable when changing xattrs from security
    namespace
  - fix memory leak in device lookup helper
  - update generation of hole file extent item when merging holes
  - fix space cache corruption and potential double allocations; this is
    a rare bug but can be serious once it happens, stable backports and
    analysis tool will be provided
  - fix error handling when deleting root references
  - fix crash due to assert when attempting to cancel suspended device
    replace, add message what to do if mount fails due to missing
    replace item

- regressions:
  - don't merge pages into bio if their page offset is not contiguous
  - don't allow large NOWAIT direct reads, this could lead to short
    reads eg. in io_uring

----------------------------------------------------------------
The following changes since commit 899b7f69f244e539ea5df1b4d756046337de44a5:

  btrfs: tree-checker: check for overlapping extent items (2022-08-17 16:20:25 +0200)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux.git for-6.0-rc3-tag

for you to fetch changes up to f2c3bec215694fb8bc0ef5010f2a758d1906fc2d:

  btrfs: add info when mount fails due to stale replace target (2022-08-23 22:15:21 +0200)

----------------------------------------------------------------
Anand Jain (2):
      btrfs: replace: drop assert for suspended replace
      btrfs: add info when mount fails due to stale replace target

Filipe Manana (2):
      btrfs: update generation of hole file extent item when merging holes
      btrfs: fix silent failure when deleting root reference

Goldwyn Rodrigues (1):
      btrfs: check if root is readonly while setting security xattr

Josef Bacik (1):
      btrfs: don't allow large NOWAIT direct reads

Omar Sandoval (1):
      btrfs: fix space cache corruption and potential double allocations

Qu Wenruo (1):
      btrfs: don't merge pages into bio if their page offset is not contiguous

Zixuan Fu (1):
      btrfs: fix possible memory leak in btrfs_get_dev_args_from_path()

 fs/btrfs/block-group.c | 47 +++++++++++++++--------------------------------
 fs/btrfs/block-group.h |  4 +---
 fs/btrfs/ctree.h       |  1 -
 fs/btrfs/dev-replace.c |  5 ++---
 fs/btrfs/extent-tree.c | 30 ++++++------------------------
 fs/btrfs/extent_io.c   | 33 +++++++++++++++++++++++++++++----
 fs/btrfs/file.c        |  2 ++
 fs/btrfs/inode.c       | 14 ++++++++++++++
 fs/btrfs/root-tree.c   |  5 +++--
 fs/btrfs/volumes.c     |  5 ++++-
 fs/btrfs/xattr.c       |  3 +++
 11 files changed, 79 insertions(+), 70 deletions(-)