[GIT PULL] Btrfs fixes for 5.17-rc2

[David Sterba <dsterba@suse.com>]

Hi,

several fixes for defragmentation that got broken in 5.16 after
refactoring and added subpage support. The observed bugs are excessive
IO or uninterruptible ioctl.

All stable material. Please pull, thanks.

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The following changes since commit 36c86a9e1be3b29f9f075a946df55dfe1d818019:

  btrfs: output more debug messages for uncommitted transaction (2022-01-07 14:18:27 +0100)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux.git for-5.17-rc1-tag

for you to fetch changes up to 27cdfde181bcacd226c230b2fd831f6f5b8c215f:

  btrfs: update writeback index when starting defrag (2022-01-24 18:16:28 +0100)

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Filipe Manana (5):
      btrfs: fix too long loop when defragging a 1 byte file
      btrfs: allow defrag to be interruptible
      btrfs: fix deadlock when reserving space during defrag
      btrfs: add back missing dirty page rate limiting to defrag
      btrfs: update writeback index when starting defrag

Qu Wenruo (2):
      btrfs: defrag: fix wrong number of defragged sectors
      btrfs: defrag: properly update range->start for autodefrag

 fs/btrfs/ioctl.c | 84 ++++++++++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 75 insertions(+), 9 deletions(-)