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.

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
(cherry picked from commit c8a2b1f7)

Change-Id: I8c3e3ca9bb43eeba4ab8fe85b8697090169f3696
Signed-off-by: nirmp <quic_nirmp@quicinc.com>