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由 Josef Bacik 提交于
Since the fast caching uses normal tree locking, we can possibly deadlock if we get to the caching via a btrfs_search_slot() on the tree_root. So just check to see if the root we are on is the tree root, and just don't do the fast caching. Reported-by: NSage Weil <sage@newdream.net> Signed-off-by: NJosef Bacik <josef@redhat.com>
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