From: Tejun Heo <htejun@gmail.com>
To: Jeff Garzik <jeff@garzik.org>
Cc: linux-ide@vger.kernel.org, alan@lxorguk.ukuu.org.uk, liml@rtr.ca,
albertl@mail.com, jens.axboe@oracle.com
Subject: Re: [PATCH 14/14] libata: use PIO for misc ATAPI commands
Date: Wed, 05 Dec 2007 10:14:56 +0900 [thread overview]
Message-ID: <4755FB90.50505@gmail.com> (raw)
In-Reply-To: <4755ABB3.6030907@garzik.org>
Jeff Garzik wrote:
> The other patches were OK, but I'm still not happy about "punishing the
> good guys"
Yeah, I know. I guess you know my but-what's-the-actual-punishment
argument too by now.
This is about time we make decision on this. If we're gonna go
DMA-for-everything way, we should lift 16 byte default masking for -mm
and -rc's as that only makes debugging difficult and try to blacklist
offending devices and controllers individually.
My primary concern is about not achieving enough test coverage and
isolated cases where it's difficult to tell whether it's the device or
the controller. e.g. Loading recent distro on an ancient and/or strange
machine, scratching head while cursing and giving up. Unfortunately,
I've seen similar things happening often enough (and I did so myself
more times than I'm proud of). Only very small fraction of problems
actually reaches developers.
Thanks.
--
tejun
next prev parent reply other threads:[~2007-12-05 1:15 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-29 14:33 [PATCHSET] libata: improve ATAPI data transfer handling, take #2 Tejun Heo
2007-11-29 14:33 ` [PATCH 01/14] libata: update atapi_eh_request_sense() such that lbam/lbah contains buffer size Tejun Heo
2007-11-29 15:51 ` Alan Cox
2007-12-04 19:27 ` Jeff Garzik
2007-12-05 0:47 ` Tejun Heo
2007-11-29 14:33 ` [PATCH 02/14] cdrom: add more GPCMD_* constants Tejun Heo
2007-11-29 14:33 ` [PATCH 03/14] libata: rename ATA_PROT_ATAPI_* to ATAPI_PROT_* Tejun Heo
2007-11-29 15:52 ` Alan Cox
2007-11-29 14:33 ` [PATCH 04/14] libata: add ATAPI_* cmd types and implement atapi_cmd_type() Tejun Heo
2007-11-29 14:33 ` [PATCH 05/14] libata: make ->data_xfer return the number of consumed bytes Tejun Heo
2007-11-29 15:55 ` Alan Cox
2007-11-29 16:06 ` Tejun Heo
2007-11-29 17:42 ` Alan Cox
2007-11-29 18:00 ` Tejun Heo
2007-11-29 18:24 ` Alan Cox
2007-11-29 18:57 ` Mark Lord
2007-11-29 19:37 ` Jeff Garzik
2007-11-29 19:36 ` Jeff Garzik
2007-11-29 21:22 ` Alan Cox
2007-12-04 19:30 ` Jeff Garzik
2007-12-05 0:49 ` Tejun Heo
2007-12-05 1:05 ` Jeff Garzik
2007-11-29 14:33 ` [PATCH 06/14] libata: improve ATAPI draining Tejun Heo
2007-11-29 15:59 ` Alan Cox
2007-11-29 16:09 ` Tejun Heo
2007-11-29 16:42 ` Tejun Heo
2007-11-29 17:40 ` Alan Cox
2007-11-29 18:11 ` Tejun Heo
2007-11-29 18:19 ` Alan Cox
2007-12-04 10:06 ` Albert Lee
2007-12-05 1:00 ` Tejun Heo
2007-11-29 14:33 ` [PATCH 07/14] libata: make atapi_request_sense() use sg Tejun Heo
2007-11-29 14:33 ` [PATCH 08/14] libata: kill non-sg DMA interface Tejun Heo
2007-11-29 16:00 ` Alan Cox
2007-12-04 19:31 ` Jeff Garzik
2007-12-05 1:02 ` Tejun Heo
2007-11-29 14:33 ` [PATCH 09/14] libata: change ATA_QCFLAG_DMAMAP semantics Tejun Heo
2007-11-29 14:33 ` [PATCH 10/14] libata: convert to chained sg Tejun Heo
2007-11-29 14:33 ` [PATCH 11/14] libata: add qc->dma_nbytes Tejun Heo
2007-11-29 16:02 ` Alan Cox
2007-12-04 19:33 ` Jeff Garzik
2007-12-05 1:02 ` Tejun Heo
2007-11-29 14:33 ` [PATCH 12/14] libata: implement ATAPI drain buffer Tejun Heo
2007-11-29 14:33 ` [PATCH 13/14] libata: implement ATAPI per-command-type DMA horkages Tejun Heo
2007-11-29 16:04 ` Alan Cox
2007-11-29 16:10 ` Tejun Heo
2007-11-29 14:33 ` [PATCH 14/14] libata: use PIO for misc ATAPI commands Tejun Heo
2007-11-29 16:05 ` Alan Cox
2007-11-29 16:14 ` Tejun Heo
2007-11-29 16:16 ` Tejun Heo
2007-11-29 18:55 ` Mark Lord
2007-11-29 22:52 ` Tejun Heo
2007-11-30 1:03 ` Mark Lord
2007-11-30 1:34 ` Tejun Heo
2007-11-30 4:19 ` Mark Lord
2007-11-30 13:40 ` Alan Cox
2007-11-30 13:59 ` Tejun Heo
2007-11-30 14:12 ` Jeff Garzik
2007-11-30 15:36 ` Alan Cox
2007-11-30 13:09 ` Alan Cox
2007-11-29 17:38 ` Alan Cox
2007-12-04 19:34 ` Jeff Garzik
2007-12-05 1:14 ` Tejun Heo [this message]
2007-12-05 12:47 ` Alan Cox
2007-12-05 13:03 ` Tejun Heo
2007-12-05 14:01 ` Alan Cox
2007-12-05 14:22 ` Tejun Heo
2007-12-05 14:46 ` Alan Cox
2007-12-05 15:13 ` Tejun Heo
2007-12-05 18:52 ` Jeff Garzik
2007-12-06 11:03 ` Petr Vandrovec
2007-12-06 11:10 ` Tejun Heo
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