From: Mark Lord <liml@rtr.ca>
To: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Ric Wheeler <ric@emc.com>, "Eric D. Mudama" <edmudama@gmail.com>,
linux-kernel@vger.kernel.org,
IDE/ATA development list <linux-ide@vger.kernel.org>,
linux-scsi <linux-scsi@vger.kernel.org>,
dougg@torque.net
Subject: Re: [PATCH] scsi_lib.c: continue after MEDIUM_ERROR
Date: Wed, 31 Jan 2007 10:13:21 -0500 [thread overview]
Message-ID: <45C0B211.2030305@rtr.ca> (raw)
In-Reply-To: <1170217288.10890.37.camel@mulgrave.il.steeleye.com>
James Bottomley wrote:
>
> For the MD case, this is what REQ_FAILFAST is for.
I cannot find where SCSI honours that flag. James?
And for that matter, even when I patch SCSI so that it *does* honour it,
I don't actually see the flag making it into the SCSI layer from above.
And I don't see where/how the block layer takes care when considering
merge FAILFAST/READA requests with non FAILFAST/READA requests.
To me, it looks perfectly happy to add non-FAILFAST/READA bios
to a FAILFAST request, risking data loss if a lower-layer decides
to honour the FAILFAST/READA flags.
So it's a pretty Good Thing(tm) that SCSI doesn't currently honour it. ;)
next prev parent reply other threads:[~2007-01-31 15:13 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-31 0:47 [PATCH] scsi_lib.c: continue after MEDIUM_ERROR Mark Lord
2007-01-31 1:12 ` [PATCH] RESEND " Mark Lord
2007-01-31 1:16 ` [PATCH] " James Bottomley
2007-01-31 1:36 ` Mark Lord
[not found] ` <311601c90701301725n53d25a74g652b7ca3bfc64c56@mail.gmail.com>
2007-01-31 1:41 ` Mark Lord
2007-01-31 3:20 ` Ric Wheeler
2007-01-31 4:21 ` James Bottomley
2007-01-31 15:13 ` Mark Lord [this message]
2007-01-31 15:22 ` Mark Lord
2007-01-31 15:24 ` James Bottomley
2007-01-31 5:09 ` Douglas Gilbert
2007-01-31 15:08 ` Mark Lord
2007-01-31 15:23 ` Alan
2007-01-31 16:35 ` Ric Wheeler
2007-01-31 17:57 ` Mark Lord
2007-01-31 18:13 ` James Bottomley
2007-01-31 18:37 ` Mark Lord
2007-01-31 9:30 ` Jeff Garzik
2007-01-31 14:36 ` Ric Wheeler
2007-01-31 15:28 ` Douglas Gilbert
2007-01-31 15:38 ` Mark Lord
2007-02-01 20:02 ` Mark Lord
2007-02-01 21:55 ` James Bottomley
2007-02-02 2:48 ` Mark Lord
2007-02-02 12:20 ` Ric Wheeler
2007-02-02 14:42 ` Alan
2007-02-02 14:53 ` James Bottomley
2007-02-02 16:16 ` Ric Wheeler
2007-02-02 20:16 ` Douglas Gilbert
2007-02-02 14:50 ` Alan
2007-02-02 16:06 ` Mark Lord
2007-02-02 19:49 ` Matt Mackall
2007-02-02 22:58 ` Mark Lord
2007-02-02 23:07 ` Matt Mackall
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