From: Linus Torvalds <torvalds@linux-foundation.org>
To: Mateusz Guzik <mjguzik@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>,
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
Subject: Re: [RFC][PATCH 10/13] get rid of audit_reusename()
Date: Sun, 9 Nov 2025 14:29:05 -0800 [thread overview]
Message-ID: <CAHk-=whxKKnh=rtO9sq0uUL76YGLB3YTb98DVBub_84_nO6txA@mail.gmail.com> (raw)
In-Reply-To: <CAGudoHGCkDXsFnc30k10w-thxNZ5c0B9j26kOWsCXkOV8ueeEA@mail.gmail.com>
On Sun, 9 Nov 2025 at 14:18, Mateusz Guzik <mjguzik@gmail.com> 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
next prev parent reply other threads:[~2025-11-09 22:29 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-09 6:37 [RFC][PATCH 00/13] io_uring, struct filename and audit Al Viro
2025-11-09 6:37 ` [RFC][PATCH 01/13] do_faccessat(): import pathname only once Al Viro
2025-11-13 10:11 ` Jan Kara
2025-11-09 6:37 ` [RFC][PATCH 02/13] do_fchmodat(): " Al Viro
2025-11-13 10:12 ` Jan Kara
2025-11-09 6:37 ` [RFC][PATCH 03/13] do_fchownat(): " Al Viro
2025-11-13 10:13 ` Jan Kara
2025-11-09 6:37 ` [RFC][PATCH 04/13] do_utimes_path(): " Al Viro
2025-11-13 10:15 ` Jan Kara
2025-11-09 6:37 ` [RFC][PATCH 05/13] chdir(2): " Al Viro
2025-11-13 10:16 ` Jan Kara
2025-11-09 6:37 ` [RFC][PATCH 06/13] chroot(2): " Al Viro
2025-11-13 10:18 ` Jan Kara
2025-11-09 6:37 ` [RFC][PATCH 07/13] user_statfs(): " Al Viro
2025-11-13 10:18 ` Jan Kara
2025-11-09 6:37 ` [RFC][PATCH 08/13] do_sys_truncate(): " Al Viro
2025-11-13 10:18 ` Jan Kara
2025-11-09 6:37 ` [RFC][PATCH 09/13] do_readlinkat(): " Al Viro
2025-11-13 10:20 ` Jan Kara
2025-11-09 6:37 ` [RFC][PATCH 10/13] get rid of audit_reusename() Al Viro
2025-11-09 19:18 ` Linus Torvalds
2025-11-09 19:55 ` Mateusz Guzik
2025-11-09 20:22 ` Linus Torvalds
2025-11-09 22:18 ` Mateusz Guzik
2025-11-09 22:29 ` Linus Torvalds [this message]
2025-11-09 22:33 ` Mateusz Guzik
2025-11-09 22:39 ` Mateusz Guzik
2025-11-09 22:41 ` Linus Torvalds
2025-11-09 22:44 ` Linus Torvalds
2025-11-09 23:07 ` Linus Torvalds
2025-11-09 22:18 ` Linus Torvalds
2025-11-10 5:17 ` Al Viro
2025-11-10 16:41 ` Linus Torvalds
2025-11-10 19:58 ` Al Viro
2025-11-10 20:52 ` Linus Torvalds
2025-11-11 1:16 ` Al Viro
2025-11-12 9:26 ` Christian Brauner
2025-11-10 6:05 ` Al Viro
2025-11-10 6:36 ` Al Viro
2025-11-10 16:50 ` Linus Torvalds
2025-11-10 23:13 ` Paul Moore
2025-11-11 0:23 ` Paul Moore
2025-11-13 10:29 ` Jan Kara
2025-11-09 6:37 ` [RFC][PATCH 11/13] allow incomplete imports of filenames Al Viro
2025-11-11 0:45 ` Paul Moore
2025-11-11 14:41 ` Jens Axboe
2025-11-19 1:12 ` Al Viro
2025-11-19 1:14 ` Al Viro
2025-11-19 5:41 ` Al Viro
2025-11-09 6:37 ` [RFC][PATCH 12/13] fs: touch up predicts in putname() Al Viro
2025-11-09 6:37 ` [RFC][PATCH 13/13] struct filename ->refcnt doesn't need to be atomic Al Viro
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