linux-kernel - Re: [PATCH v9 11/17] mm: replace vm_lock and detached flag with a reference count

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Message-ID: <b94f4776-9dfd-4a7b-aee0-e419f07343a8@suse.cz>
Date: Sat, 11 Jan 2025 21:38:54 +0100
From: Vlastimil Babka <vbabka@...e.cz>
To: Suren Baghdasaryan <surenb@...gle.com>, Mateusz Guzik
 <mjguzik@...il.com>, Hillf Danton <hdanton@...a.com>
Cc: akpm@...ux-foundation.org, peterz@...radead.org, willy@...radead.org,
 liam.howlett@...cle.com, lorenzo.stoakes@...cle.com,
 david.laight.linux@...il.com, mhocko@...e.com, hannes@...xchg.org,
 oliver.sang@...el.com, mgorman@...hsingularity.net, david@...hat.com,
 peterx@...hat.com, oleg@...hat.com, dave@...olabs.net, paulmck@...nel.org,
 brauner@...nel.org, dhowells@...hat.com, hdanton@...a.com, hughd@...gle.com,
 lokeshgidra@...gle.com, minchan@...gle.com, jannh@...gle.com,
 shakeel.butt@...ux.dev, souravpanda@...gle.com, pasha.tatashin@...een.com,
 klarasmodin@...il.com, richard.weiyang@...il.com, corbet@....net,
 linux-doc@...r.kernel.org, linux-mm@...ck.org, linux-kernel@...r.kernel.org,
 kernel-team@...roid.com
Subject: Re: [PATCH v9 11/17] mm: replace vm_lock and detached flag with a
 reference count

On 1/11/25 21:14, Suren Baghdasaryan wrote:
> I plan on replacing refcount_t usage here with an atomic since, as
> Hillf noted, refcount is not designed to be used for locking. And will
> make sure the down_read_trylock() replacement will provide an acquire
> fence.

Could Hillf stop reducing the Cc list on his replies? The whole subthread
went to only few people :(