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[209.85.208.51]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b8dbefc667asm507728766b.22.2026.01.30.17.11.56 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 30 Jan 2026 17:11:57 -0800 (PST) Received: by mail-ed1-f51.google.com with SMTP id 4fb4d7f45d1cf-65808bb859cso4124179a12.2 for ; Fri, 30 Jan 2026 17:11:56 -0800 (PST) X-Forwarded-Encrypted: i=1; AJvYcCUjSRW4zm8p3jRuREenjF2LKm63oO9MX3qXfgKb136yG8IsRa+8kSFpkPFwo1YWct6+4VV4NBPvLA==@kvack.org X-Received: by 2002:a05:6402:35c7:b0:658:ba49:96c2 with SMTP id 4fb4d7f45d1cf-658de54e61dmr2863591a12.6.1769821915767; Fri, 30 Jan 2026 17:11:55 -0800 (PST) MIME-Version: 1.0 References: <20260128045954.GS3183987@ZenIV> <20260129032335.GT3183987@ZenIV> <20260129225433.GU3183987@ZenIV> <20260130070424.GV3183987@ZenIV> <20260130235743.GW3183987@ZenIV> <20260131010821.GY3183987@ZenIV> In-Reply-To: <20260131010821.GY3183987@ZenIV> From: Linus Torvalds Date: Fri, 30 Jan 2026 17:11:39 -0800 X-Gmail-Original-Message-ID: X-Gm-Features: AZwV_QiG_nByRrd83VYAdhaCU5_carsYUlImGLyJR9w-28CTqo3phlyWLRwFL8I Message-ID: Subject: Re: [PATCH v4 00/54] tree-in-dcache stuff To: Al Viro Cc: Samuel Wu , Greg KH , linux-fsdevel@vger.kernel.org, brauner@kernel.org, jack@suse.cz, raven@themaw.net, miklos@szeredi.hu, neil@brown.name, a.hindborg@kernel.org, linux-mm@kvack.org, linux-efi@vger.kernel.org, ocfs2-devel@lists.linux.dev, kees@kernel.org, rostedt@goodmis.org, linux-usb@vger.kernel.org, paul@paul-moore.com, casey@schaufler-ca.com, linuxppc-dev@lists.ozlabs.org, john.johansen@canonical.com, selinux@vger.kernel.org, borntraeger@linux.ibm.com, bpf@vger.kernel.org, clm@meta.com, android-kernel-team Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: E84A1180002 X-Stat-Signature: zn7bz4xa456ntqoztuuoziytrkuyt598 X-Rspam-User: X-HE-Tag: 1769821919-405636 X-HE-Meta: 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 FF4mesfo rb/h6kNSJYIR3R1NWh1e7Gk0cStK4MIuFxG+8tmu2nc0fkzUqKx6DkLADX1wGDNi2IBlshH5P2c+0g1HBiUkILQkYaracG1hK+HxtIv2aV3ovNe0MtKORqGyUV4wmcwinceO7MOmgFgSxzBTw/xpLi+1eyBC93a5fJTrJcctO2FU7+ONr3EblDB/XyiYwn02ubuJtatRMmR82xqZaY8lxkWjUKppi4dPPI+jxB8tW6V4+MXPQQKYj/NDpTOvI8kN22BgGjAZcGi19Z4KG81oAN6N9RnBqyq9kTaWSmnYEihviddc9jM91N8KbcA== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Fri, 30 Jan 2026 at 17:06, Al Viro wrote: > > I'd rather go for a spinlock there, protecting these FFS_DEACTIVATED > transitions; Yes, that's the much better solution. The locking in this thing is horrendous. But judging by Samuel's recent email, there's something else than the open locking thing going on. Linus