[PATCH v2 0/5] btrfs: Enhancement to tree block validation

[Qu Wenruo <wqu@suse.com>]

Patchset can be fetched from github:
https://github.com/adam900710/linux/tree/write_time_tree_checker
Which is based on v5.0-rc1 tag.

This patchset has the following two features:
- Tree block validation output enhancement
  * Output validation failure timing (write time or read time)
  * Always output tree block level/key mismatch error message
    This part is already submitted and reviewed.

- Write time tree block validation check
  To catch memory corruption either from hardware or kernel.
  Example output would be:

    BTRFS critical (device dm-3): corrupt leaf: root=2 block=1350630375424 slot=68, bad key order, prev (10510212874240 169 0) current (1714119868416 169 0)
    BTRFS error (device dm-3): write time tree block corruption detected
    BTRFS critical (device dm-3): corrupt leaf: root=2 block=1350630375424 slot=68, bad key order, prev (10510212874240 169 0) current (1714119868416 169 0)
    BTRFS error (device dm-3): write time tree block corruption detected
    BTRFS: error (device dm-3) in btrfs_commit_transaction:2220: errno=-5 IO failure (Error while writing out transaction)
    BTRFS info (device dm-3): forced readonly
    BTRFS warning (device dm-3): Skipping commit of aborted transaction.
    BTRFS: error (device dm-3) in cleanup_transaction:1839: errno=-5 IO failure
    BTRFS info (device dm-3): delayed_refs has NO entry

Changelog:
- Unlock locked pages in lock_extent_buffer_for_io() for error handling
- Added Reviewed-by tags.

Qu Wenruo (5):
  btrfs: Always output error message when key/level verification fails
  btrfs: extent_io: Kill the forward declaration of flush_write_bio()
  btrfs: extent_io: Kill the BUG_ON() in flush_write_bio()
  btrfs: disk-io: Show the timing of corrupted tree block explicitly
  btrfs: Do mandatory tree block check before submitting bio

 fs/btrfs/disk-io.c   |  20 +++++--
 fs/btrfs/extent_io.c | 135 +++++++++++++++++++++++++++----------------
 2 files changed, 102 insertions(+), 53 deletions(-)

-- 
2.20.1