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[209.85.218.45]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-6411f857839sm10027683a12.21.2025.11.09.14.29.22 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 09 Nov 2025 14:29:24 -0800 (PST) Received: by mail-ej1-f45.google.com with SMTP id a640c23a62f3a-b72dc0c15abso279136566b.1 for ; Sun, 09 Nov 2025 14:29:22 -0800 (PST) X-Forwarded-Encrypted: i=1; AJvYcCWxAaLqagKqe2ljd7kOYNT4cI56ceCk7kaCZMNeGJzG36KCbhaTLaiyoaPgQbFzicbAeFMLmeb2jQ==@vger.kernel.org X-Received: by 2002:a17:907:7e91:b0:b6d:9576:3890 with SMTP id a640c23a62f3a-b72e04ca2a7mr646520366b.45.1762727361843; Sun, 09 Nov 2025 14:29:21 -0800 (PST) Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 References: <20251109063745.2089578-1-viro@zeniv.linux.org.uk> <20251109063745.2089578-11-viro@zeniv.linux.org.uk> In-Reply-To: From: Linus Torvalds Date: Sun, 9 Nov 2025 14:29:05 -0800 X-Gmail-Original-Message-ID: X-Gm-Features: AWmQ_blmodcy0umvH9FZdE7IOt16sLGm5PW6HtUqYPgjmzsWiwn8iRr6Hrq0I0s Message-ID: Subject: Re: [RFC][PATCH 10/13] get rid of audit_reusename() To: Mateusz Guzik Cc: Al Viro , linux-fsdevel@vger.kernel.org, brauner@kernel.org, jack@suse.cz, paul@paul-moore.com, axboe@kernel.dk, audit@vger.kernel.org, io-uring@vger.kernel.org Content-Type: text/plain; charset="UTF-8" On Sun, 9 Nov 2025 at 14:18, Mateusz Guzik wrote: > > You would need 256 bytes to cover almost all of this. Why would you care to cover all of that? Your very numbers show that 128 bytes covers 97+% of all cases (and 160 bytes is at 99.8%) The other cases need to be *correct*, of course, but not necessarily optimized for. If we can do 97% of all filenames with a simple on-stack allocation, that would be a huge win. (In fact, 64 bytes covers 90% of the cases according to your numbers). Linus