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From: Uros Bizjak <ubizjak@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: "Uros Bizjak" <ubizjak@gmail.com>,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	"Andrew Morton" <akpm@linux-foundation.org>,
	"Sebastian Andrzej Siewior" <bigeasy@linutronix.de>,
	"Paul E. McKenney" <paulmck@kernel.org>,
	"Alexey Gladkov" <legion@kernel.org>,
	"Roman Gushchin" <roman.gushchin@linux.dev>,
	"MengEn Sun" <mengensun@tencent.com>,
	"Thomas Weißschuh" <linux@weissschuh.net>
Subject: [PATCH RESEND v2 1/2] ucount: Fix atomic_long_inc_below() argument type
Date: Mon, 21 Jul 2025 19:45:57 +0200	[thread overview]
Message-ID: <20250721174610.28361-1-ubizjak@gmail.com> (raw)

The type of u argument of atomic_long_inc_below() should be long
to avoid unwanted truncation to int.

Fixes: f9c82a4ea89c ("Increase size of ucounts to atomic_long_t")
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Reviewed-by: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Alexey Gladkov <legion@kernel.org>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: MengEn Sun <mengensun@tencent.com>
Cc: "Thomas Weißschuh" <linux@weissschuh.net>
---
 kernel/ucount.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/ucount.c b/kernel/ucount.c
index 8686e329b8f2..f629db485a07 100644
--- a/kernel/ucount.c
+++ b/kernel/ucount.c
@@ -199,7 +199,7 @@ void put_ucounts(struct ucounts *ucounts)
 	}
 }
 
-static inline bool atomic_long_inc_below(atomic_long_t *v, int u)
+static inline bool atomic_long_inc_below(atomic_long_t *v, long u)
 {
 	long c, old;
 	c = atomic_long_read(v);
-- 
2.50.1


             reply	other threads:[~2025-07-21 17:46 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-07-21 17:45 Uros Bizjak [this message]
2025-07-21 17:45 ` [PATCH RESEND v2 2/2] ucount: Use atomic_long_try_cmpxchg() in atomic_long_inc_below() Uros Bizjak
2025-07-21 22:43 ` [PATCH RESEND v2 1/2] ucount: Fix atomic_long_inc_below() argument type Andrew Morton
2025-07-22  6:44   ` Uros Bizjak
2025-07-22  9:48     ` Mark Rutland

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