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Chris Mason 5cd57b2cbb Btrfs: Add a skip_locking parameter to struct path, and make various funcs honor it ... Allocations may need to read in block groups from the extent allocation tree, which will require a tree search and take locks on the extent allocation tree. But, those locks might already be held in other places, leading to deadlocks. Since the alloc_mutex serializes everything right now, it is safe to skip the btree locking while caching block groups. A better fix will be to either create a recursive lock or find a way to back off existing locks while caching block groups. Signed-off-by: Chris Mason <chris.mason@oracle.com>		17 years ago
fs/btrfs	Btrfs: Add a skip_locking parameter to struct path, and make various funcs honor it	17 years ago