linux-kernel - [PATCH 0/4] ucounts: misc cleanups

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Date:   Mon, 18 Oct 2021 12:54:35 -0500
From:   ebiederm@...ssion.com (Eric W. Biederman)
To:     Alexey Gladkov <legion@...nel.org>
Cc:     Rune Kleveland <rune.kleveland@...omedia.dk>,
        Yu Zhao <yuzhao@...gle.com>,
        Jordan Glover <Golden_Miller83@...tonmail.ch>,
        LKML <linux-kernel@...r.kernel.org>, linux-mm@...ck.org,
        containers@...ts.linux-foundation.org,
        Hillf Danton <hdanton@...a.com>
Subject: [PATCH 0/4] ucounts: misc cleanups


The following changes are a set of miscellaneous fixes that makes
the ucount code a little bit easier to read.  There are all things
that I ran into while helping hunt the crazy reference count
bug.

I am aiming these at the next merge window and 5.16 rather than bug
fixes to get into the current 5.15.

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