From: Andi Kleen <andi@firstfloor.org>
To: Jonathan Corbet <corbet@lwn.net>
Cc: LKML <linux-kernel@vger.kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
Al Viro <viro@ZenIV.linux.org.uk>
Subject: Re: [PATCH, RFC] fasync() BKL pushdown
Date: Fri, 20 Jun 2008 19:55:03 +0200 [thread overview]
Message-ID: <485BEEF7.2020404@firstfloor.org> (raw)
In-Reply-To: <20080620112914.783be428@bike.lwn.net>
Jonathan Corbet wrote:
> The majority of fasync() functions just call fasync_helper() with a pointer
> to an fasync_struct reachable from the file structure. Given that (1) the
> struct file will not go away while fasync() is running, and (2) the
> VFS-level fasync() stuff is protected with the Big Fasync Lock, I contend
> that these simple implementations have no need for the BKL.
Not necessarily true, they might require BKL still for fd live time issues.
-Andi
next prev parent reply other threads:[~2008-06-20 17:55 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-20 17:29 [PATCH, RFC] fasync() BKL pushdown Jonathan Corbet
2008-06-20 17:55 ` Andi Kleen [this message]
2008-06-20 19:09 ` Jonathan Corbet
2008-06-20 19:12 ` Andi Kleen
2008-06-25 22:30 ` [PATCH, RFC] fasync() BKL pushdown (take 2) Jonathan Corbet
2008-06-27 8:48 ` Andi Kleen
2008-06-20 20:58 ` [PATCH, RFC] fasync() BKL pushdown Arjan van de Ven
2008-06-20 21:05 ` Jonathan Corbet
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