[PATCH 0/4] smb/server: various clean-ups

[NeilBrown]

I am working towards making some changes to how locking is managed for
directory operations.  Prior to attempting to land these changes I am
reviewing code that requests directory operations and cleaning up things
that might cause me problems later.

These 4 patches are the result of my review of smb/server.  Note that
patch 3 fixes what appears to be a real deadlock that should be trivial
to hit if the client can actually set the flag which, as mentioned in
the patch, can trigger the deadlock.

Patch 1 is trivial but the others deserve careful review by someone who
knows the code.  I think they are correct, but I've been wrong before.

Thanks,
NeilBrown

 [PATCH 1/4] smb/server: use lookup_one_unlocked()
 [PATCH 2/4] smb/server: simplify ksmbd_vfs_kern_path_locked()
 [PATCH 3/4] smb/server: avoid deadlock when linking with
 [PATCH 4/4] smb/server: add ksmbd_vfs_kern_path()