From: Oleg Nesterov <oleg@redhat.com>
To: Mateusz Guzik <mjguzik@gmail.com>
Cc: brauner@kernel.org, linux-kernel@vger.kernel.org,
akpm@linux-foundation.org, linux-mm@kvack.org
Subject: Re: [PATCH 2/3] ns: pad refcount
Date: Sun, 23 Nov 2025 19:58:30 +0100 [thread overview]
Message-ID: <aSNZVv6BZCZcRsgs@redhat.com> (raw)
In-Reply-To: <20251123063054.3502938-3-mjguzik@gmail.com>
On 11/23, Mateusz Guzik wrote:
>
> struct ns_common {
> + struct {
> + refcount_t __ns_ref; /* do not use directly */
> + } ____cacheline_aligned_in_smp;
Cough... stupid question. Why not just
refcount_t __ns_ref ____cacheline_aligned_in_smp;
? why do we need the anonymous struct?
Oleg.
next prev parent reply other threads:[~2025-11-23 18:58 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-23 6:30 [PATCH 0/3] further damage-control lack of clone scalability Mateusz Guzik
2025-11-23 6:30 ` [PATCH 1/3] idr: add idr_prealloc_many Mateusz Guzik
2025-11-23 6:30 ` [PATCH 2/3] ns: pad refcount Mateusz Guzik
2025-11-23 18:58 ` Oleg Nesterov [this message]
2025-11-23 19:47 ` Mateusz Guzik
2025-11-24 18:25 ` Oleg Nesterov
2025-11-23 6:30 ` [PATCH 3/3] pid: only take pidmap_lock once on alloc Mateusz Guzik
2025-11-23 20:09 ` Oleg Nesterov
2025-11-23 22:48 ` Mateusz Guzik
2025-11-23 15:00 ` [PATCH 0/3] further damage-control lack of clone scalability Matthew Wilcox
2025-11-23 16:39 ` Mateusz Guzik
2025-11-23 21:45 ` Matthew Wilcox
2025-11-23 22:33 ` Mateusz Guzik
2025-11-24 4:03 ` Mateusz Guzik
2025-12-03 8:37 ` Mateusz Guzik
2025-12-03 9:18 ` Mateusz Guzik
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