From: Arnd Bergmann <arnd@arndb.de>
To: Christoph Hellwig <hch@lst.de>
Cc: linux-kernel@vger.kernel.org, John Kacur <jkacur@redhat.com>,
Frederic Weisbecker <fweisbec@gmail.com>,
Matthew Wilcox <willy@linux.intel.com>,
Trond Myklebust <trond.myklebust@fys.uio.no>,
"J. Bruce Fields" <bfields@fieldses.org>,
Miklos Szeredi <mszeredi@suse.cz>, Ingo Molnar <mingo@redhat.com>,
linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH 2/3] Remove BKL from fs/locks.c
Date: Sun, 11 Jul 2010 12:31:18 +0200 [thread overview]
Message-ID: <201007111231.18926.arnd@arndb.de> (raw)
In-Reply-To: <20100710220110.GA13380@lst.de>
On Sunday 11 July 2010 00:01:10 Christoph Hellwig wrote:
> On Sat, Jul 10, 2010 at 11:51:40PM +0200, Arnd Bergmann wrote:
> > From: Matthew Wilcox <willy@linux.intel.com>
> >
> > I've taken a patch originally written by Matthew Wilcox and
> > ported it to the current version. Unfortunately, the change
> > conflicts with the use of lockd, which still heavily uses
> > the big kernel lock.
> >
> > As a workaround, I've made the behaviour configurable,
> > it either uses the BKL when it's enabled or a spinlock
> > when the BKL (and consequently nfs and lockd) are
> > disabled.
>
> Defintively not something we want in mainline. But keep poking
> the nfs guys to sort the lockd mess out for real.
Yes, that was the idea. This is the last patch I need to run
all of my machines without the BKL, so I spent a few hours
looking at how to fix lockd. When I couldn't figure it out,
I decided to do an evil hack that happens to work, in order
to build pressure.
Arnd
next prev parent reply other threads:[~2010-07-11 10:31 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-10 21:51 [PATCH 0/3] further BKL removal Arnd Bergmann
2010-07-10 21:51 ` [PATCH 1/3] drm: kill BKL from common code Arnd Bergmann
2010-08-24 18:46 ` Andreas Schwab
2010-08-24 20:45 ` Arnd Bergmann
2010-07-10 21:51 ` [PATCH 2/3] Remove BKL from fs/locks.c Arnd Bergmann
2010-07-10 22:01 ` Christoph Hellwig
2010-07-11 10:31 ` Arnd Bergmann [this message]
2010-07-10 21:51 ` [PATCH 3/3] sound: push BKL into open functions Arnd Bergmann
2010-07-11 7:15 ` Jaroslav Kysela
2010-07-11 10:16 ` Arnd Bergmann
2010-07-12 15:53 ` Takashi Iwai
2010-07-12 17:53 ` [PATCH] sound/oss: convert to unlocked_ioctl Arnd Bergmann
2010-07-12 20:38 ` Takashi Iwai
2010-07-12 21:13 ` Arnd Bergmann
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