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Subject[GIT PULL] Btrfs fixes for 5.5-rc5

a few fixes for btrfs:

* blkcg accounting problem with compression that could stall writes

* setting up blkcg bio for compression crashes due to NULL bdev pointer

* fix possible infinite loop in writeback for nocow files (here possible
means almost impossible, 13 things that need to happen to trigger it)

Please pull, thanks.

The following changes since commit fbd542971aa1e9ec33212afe1d9b4f1106cd85a1:

btrfs: send: remove WARN_ON for readonly mount (2019-12-13 14:10:46 +0100)

are available in the Git repository at:

git:// for-5.5-rc4-tag

for you to fetch changes up to de7999afedff02c6631feab3ea726a0e8f8c3d40:

Btrfs: fix infinite loop during nocow writeback due to race (2019-12-30 16:13:20 +0100)

Dennis Zhou (2):
btrfs: punt all bios created in btrfs_submit_compressed_write()
btrfs: fix compressed write bio blkcg attribution

Filipe Manana (1):
Btrfs: fix infinite loop during nocow writeback due to race

fs/btrfs/compression.c | 7 ++++++-
fs/btrfs/inode.c | 6 +++---
2 files changed, 9 insertions(+), 4 deletions(-)

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