From: "J. Bruce Fields" <bfields@fieldses.org>
To: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Christof Schmitt <christof.schmitt@de.ibm.com>,
linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
lsf10-pc@lists.linuxfoundation.org, linux-scsi@vger.kernel.org
Subject: Re: [Lsf10-pc] Current topics for LSF10/MM Summit 8-9 August in Boston
Date: Fri, 18 Jun 2010 08:18:34 -0400 [thread overview]
Message-ID: <20100618121833.GB10887@fieldses.org> (raw)
In-Reply-To: <1276790850.7398.8.camel@mulgrave.site>
On Thu, Jun 17, 2010 at 11:07:30AM -0500, James Bottomley wrote:
> It's actually listed under 'dma issues' ... but there's really been no
> satisfactory resolution or discussion of how one might be achieved.
> Most filesystems rely on modifications to in-flight pages for efficiency
> and copying every fs I/O page would be horrendous both for performance
> and memory consumption. Nor has there really been an indication that
> it's a serious issue. The two sufferers are DIF and iSCSI checksum.
And, again, NFS (both client (on writes) and server (on reads)), when
using sec=krb5i. Haven't tried to reproduce the problem, but I believe
it would result in spurious IO errors.
--b.
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next prev parent reply other threads:[~2010-06-18 12:18 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-16 20:50 James Bottomley
2010-06-17 6:35 ` Nicholas A. Bellinger
2010-06-17 13:27 ` [Lsf10-pc] " James Bottomley
2010-06-17 16:00 ` Christof Schmitt
2010-06-17 16:07 ` James Bottomley
2010-06-17 16:13 ` Boaz Harrosh
2010-06-17 16:34 ` Vladislav Bolkhovitin
2010-06-17 16:42 ` James Bottomley
2010-06-17 17:11 ` Vladislav Bolkhovitin
2010-06-17 17:37 ` James Bottomley
2010-06-17 17:55 ` Vladislav Bolkhovitin
2010-06-18 11:41 ` Christof Schmitt
2010-06-18 12:18 ` J. Bruce Fields [this message]
2010-06-21 12:05 ` Current MM " Nick Piggin
2010-06-21 13:16 ` [Lsf10-pc] " Andrea Arcangeli
2010-06-21 13:22 ` Gleb Natapov
2010-06-21 14:09 ` Andrea Arcangeli
2010-06-21 14:18 ` Gleb Natapov
2010-06-21 14:29 ` Andrea Arcangeli
2010-06-21 14:31 ` Avi Kivity
2010-06-21 14:45 ` Andrea Arcangeli
2010-06-22 3:30 ` KOSAKI Motohiro
2010-06-21 20:00 ` David Rientjes
2010-06-21 20:13 ` James Bottomley
2010-07-01 18:30 ` Larry Woodman
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