UPSTREAM: af_unix: Do not use atomic ops for unix_sk(sk)->inflight.

[ Upstream commit 97af84a6 ]

When touching unix_sk(sk)->inflight, we are always under
spin_lock(&unix_gc_lock).

Let's convert unix_sk(sk)->inflight to the normal unsigned long.

Bug: 336226035
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20240123170856.41348-3-kuniyu@amazon.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 47d8ac01 ("af_unix: Fix garbage collector racing against connect()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
(cherry picked from commit 301fdbaa0bba4653570f07789909939f977a7620)
Signed-off-by: Lee Jones <joneslee@google.com>
Change-Id: I0d965d5f2a863d798c06de9f21d0467f256b538e