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3c5e13c885
There was a bug in kernel 6.3 where LOGICAL_INO with IGNORE_OFFSET sometimes fails to ignore the offset. That bug is now fixed, but LOGICAL_INO still returns 0 refs much more often than seems appropriate. This is most likely because bees frequently deletes extents while there is still work waiting for them in Task queues. In this case, LOGICAL_INO correctly returns an empty list, because every reference to some extent is deleted, but the new extent tree with that extent removed is not yet committed in btrfs. Add a DEBUG-level log message and an event counter to track these events. In the absence of a kernel bug, the debug message may indicate CPU time was wasted performing a search whose outcome could have been predicted. Signed-off-by: Zygo Blaxell <bees@furryterror.org>