rationale: *_lock_nested() is fundamentally broken - in order for lockdep to work we need to be able to check that we're following some defined ordering, and it's not possible to define a total ordering of an arbitrary number of objects with only a small fixed size enum. so it needs to go. awhile back I added the ability to set a comparison function for a lock class, and this is the start of hopefully a slow steady trickle of patches as time allows to convert code to use it. Kent Overstreet (4): fs/pipe: Convert to lockdep_cmp_fn pktcdvd: kill mutex_lock_nested() usage net: Convert sk->sk_peer_lock to lock_set_cmp_fn_ptr_order() af_unix: convert to lock_cmp_fn drivers/block/pktcdvd.c | 8 ++--- fs/pipe.c | 77 ++++++++++++++++------------------------ include/linux/lockdep.h | 3 ++ include/net/af_unix.h | 3 -- kernel/locking/lockdep.c | 6 ++++ net/core/sock.c | 1 + net/unix/af_unix.c | 24 ++++++------- net/unix/diag.c | 2 +- 8 files changed, 55 insertions(+), 69 deletions(-) -- 2.43.0
