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Josef Bacik authored
We need to hold the tree mod log lock in __tree_mod_log_rewind since we walk forward in the tree mod entries, otherwise we'll end up with random entries and trip the BUG_ON() at the front of __tree_mod_log_rewind. This fixes the panics people were seeing when running find /whatever -type f -exec btrfs fi defrag {} \; Thansk, Cc: stable@vger.kernel.org Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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