From: "David S. Miller" <davem@redhat.com>
To: dipankar@in.ibm.com
Cc: William Lee Irwin III <wli@holomorphy.com>,
Andrew Morton <akpm@digeo.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: 2.5.69-mm1
Date: 06 May 2003 05:02:22 -0700 [thread overview]
Message-ID: <1052222542.983.27.camel@rth.ninka.net> (raw)
In-Reply-To: <20030506110907.GB9875@in.ibm.com>
On Tue, 2003-05-06 at 04:09, Dipankar Sarma wrote:
> That brings me to the point - with the fget-speedup patch, we should
> probably change ->file_lock back to an rwlock again. We now take this
> lock only when fd table is shared and under such situation the rwlock
> should help. Andrew, it that ok ?
rwlocks believe it or not tend not to be superior over spinlocks,
they actually promote cache line thrashing in the case they
are actually being effective (>1 parallel reader)
--
David S. Miller <davem@redhat.com>
next prev parent reply other threads:[~2003-05-06 13:54 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-05 6:16 2.5.69-mm1 Andrew Morton
2003-05-05 15:32 ` 2.5.69-mm1 Andrei Ivanov
2003-05-05 16:45 ` 2.5.69-mm1 Greg KH
2003-05-06 9:49 ` 2.5.69-mm1 Andrei Ivanov
2003-05-05 18:44 ` 2.5.69-mm1 Andrew Morton
2003-05-05 21:01 ` 2.5.69-mm1 William Lee Irwin III
2003-05-06 11:09 ` 2.5.69-mm1 Dipankar Sarma
2003-05-06 12:02 ` David S. Miller [this message]
2003-05-06 15:25 ` 2.5.69-mm1 Dipankar Sarma
2003-05-06 14:20 ` 2.5.69-mm1 David S. Miller
2003-05-06 15:47 ` 2.5.69-mm1 Dipankar Sarma
2003-05-05 21:02 ` 2.5.69-mm1 William Lee Irwin III
2003-05-06 14:33 ` 2.5.69-mm1 Steven Cole
2003-05-06 15:33 ` 2.5.69-mm1 Andrew Morton
2003-05-06 15:36 ` 2.5.69-mm1 Eric W. Biederman
2003-05-06 16:35 ` 2.5.69-mm1 Steven Cole
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