From: "Spinka, Kristofer" <kspinka@style.net>
To: linux-kernel@vger.kernel.org
Subject: Unserializing ioctl() system calls
Date: Fri, 21 May 2004 22:46:45 -0400 [thread overview]
Message-ID: <web-1649994@style.net> (raw)
I noticed that even in the 2.6.6 code, callers to ioctl
system call (sys_ioctl in fs/ioctl.c) are serialized with
{lock,unlock}_kernel().
I realize that many kernel modules, and POSIX for that
matter, may not be ready to make this more concurrent.
I propose adding a flag to indicate that the underlying
module would like to support its own concurrency
management, and thus we avoid grabbing the BKL around the
f_op->ioctl call.
The default behavior would adhere to existing standards,
and if the flag is present (in the underlying module), we
let the module (or modules) handle it.
Reasonable?
/kristofer
next reply other threads:[~2004-05-22 2:46 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-22 2:46 Spinka, Kristofer [this message]
2004-05-22 2:54 ` Unserializing ioctl() system calls viro
2004-05-22 3:35 ` Spinka, Kristofer
[not found] <1YuKj-2FZ-9@gated-at.bofh.it>
2004-05-22 8:03 ` Andi Kleen
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