[GIT PULL] ucount cleanups for v5.16

[Eric W. Biederman]

Linus,

Please pull the ucount-fixes-for-v5.16 branch from the git tree:

  git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace.git ucount-fixes-for-v5.16

  HEAD: 32342701b4ba57a6fd77e8aca2f65f68c0fa1da6 ucounts: Use atomic_long_sub_return for clarity

While working on the ucount fixes a for v5.15 a number of cleanups
suggested themselves.  Little things like not testing for NULL when a
pointer can not be NULL and wrapping atomic_add_negative with a more
descriptive name, so that people reading the code can more quickly
understand what is going on.

Eric W. Biederman (4):
      ucounts: In set_cred_ucounts assume new->ucounts is non-NULL
      ucounts: Remove unnecessary test for NULL ucount in get_ucounts
      ucounts: Add get_ucounts_or_wrap for clarity
      ucounts: Use atomic_long_sub_return for clarity

 kernel/cred.c   |  5 ++---
 kernel/ucount.c | 20 +++++++++++++-------
 2 files changed, 15 insertions(+), 10 deletions(-)

Eric