This code in the kernel not only returns the locked root, but also takes
a reference on the node. This is important for when we sync ctree.c
into btrfs-progs, it expects that references are held on the root node
after calling these helpers.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
We want locking.h to have all the definitions that get used throughout
the codebase, however we don't want to actually use any of the actual
locking. This sync's the bulk of locking.h, and then stubs out all of
the definitions. We need a locking.c for the root lock helpers that
return the extent buffer, but everything else can simply be inlined out.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
