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From: Jeff Garzik <jeff@garzik.org>
To: Tejun Heo <htejun@gmail.com>
Cc: ric@emc.com, linux-ide@vger.kernel.org,
	Mark Lord <mlord@pobox.com>, Jens Axboe <axboe@suse.de>
Subject: Re: [RFT] major libata update
Date: Tue, 16 May 2006 19:53:57 -0400	[thread overview]
Message-ID: <446A6615.6050701@garzik.org> (raw)
In-Reply-To: <446A63F6.5030706@gmail.com>

Tejun Heo wrote:
> Hmmm.. The drive is issuing SDB FIS which completes already completed 
> tags.  This could be dangerous.  Depending on timing, it might end up 
> finishing a command which occupied the slot which hasn't been processed 
> yet.  If a drive does this, NCQ shouldn't be enabled for it.  Can you 
> post full boot dmesg?

I'm not sure the data supports that conclusion?  PORT_IRQ_SDB_FIS is 
quite normal and expected during NCQ operation, if that interrupt is 
enabled.  Just normal SDB:Entry and SDB:SetIntr states.

Side note:  looking at those states reminds me that ATAPI devices that 
support Asynchronous Notification (an end to CD-ROM polling) will soon 
be appearing on the market.  We'll need to make note of the Notification 
bit, if present...

	Jeff



  reply	other threads:[~2006-05-16 23:54 UTC|newest]

Thread overview: 117+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-05-15 17:00 [RFT] major libata update Jeff Garzik
2006-05-15 17:18 ` Andrew Morton
2006-05-15 18:06   ` Jeff Garzik
2006-05-15 19:06     ` Arkadiusz Miskiewicz
2006-05-15 20:45       ` Jeff Garzik
2006-05-15 19:33     ` Mark Lord
2006-05-15 22:52       ` Tejun Heo
2006-05-15 18:15   ` Jeff Garzik
2006-05-15 18:27     ` Andrew Morton
2006-05-15 18:44       ` Jeff Garzik
2006-05-15 18:37     ` Alan Cox
2006-05-15 17:19 ` Alan Cox
2006-05-15 17:13   ` Jeff Garzik
2006-05-15 18:29 ` Tomasz Torcz
2006-05-15 18:43   ` Jeff Garzik
2006-05-15 23:32     ` Tejun Heo
2006-05-15 23:49       ` Jeff Garzik
2006-05-16  0:04         ` Tejun Heo
2006-05-16  2:15           ` Tejun Heo
2006-05-15 19:15 ` Jeff Garzik
2006-05-15 23:02 ` Wakko Warner
2006-05-15 23:00   ` Jeff Garzik
2006-05-15 23:13     ` Wakko Warner
2006-05-15 23:19       ` Jeff Garzik
2006-05-15 23:40     ` Alan Cox
2006-05-15 23:50       ` Wakko Warner
2006-05-15 23:38   ` Alan Cox
2006-05-15 23:47     ` Wakko Warner
2006-05-15 23:45       ` Jeff Garzik
2006-05-15 23:30 ` Avuton Olrich
2006-05-15 23:36   ` Tejun Heo
2006-05-15 23:54   ` Jeff Garzik
2006-05-16  0:08     ` Avuton Olrich
2006-05-16  3:36     ` Avuton Olrich
2006-05-16  3:51       ` Jeff Garzik
2006-05-16  4:33         ` Avuton Olrich
2006-05-16 14:57           ` Linus Torvalds
2006-05-17 15:25             ` OGAWA Hirofumi
2006-05-17 23:40               ` Linus Torvalds
2006-05-17 23:48                 ` Jeff Garzik
2006-05-18  1:48                   ` Alan Cox
2006-05-17 23:49                 ` Linus Torvalds
2006-05-16 15:02           ` Jeff Garzik
2006-05-16  3:55       ` Tejun Heo
2006-05-16  4:37         ` Avuton Olrich
2006-05-16 11:36 ` Ric Wheeler
2006-05-16 14:25   ` Jeff Garzik
2006-05-16 15:24     ` Tejun Heo
2006-05-16 18:29       ` Ric Wheeler
2006-05-16 21:41         ` Ric Wheeler
2006-05-16 22:02           ` Jeff Garzik
2006-05-16 23:11             ` Eric D. Mudama
2006-05-17  2:13               ` Ric Wheeler
2006-05-16 23:23             ` Tejun Heo
2006-05-17  2:09               ` Ric Wheeler
2006-05-16 23:44         ` Tejun Heo
2006-05-16 23:53           ` Jeff Garzik [this message]
2006-05-17  0:00             ` Jeff Garzik
2006-05-17  0:29               ` Tejun Heo
2006-05-17  1:08                 ` Jeff Garzik
2006-05-17  1:27                   ` Tejun Heo
2006-05-17  2:26                     ` Jeff Garzik
2006-05-17  3:05                       ` Tejun Heo
2006-05-22  7:19                     ` Jeff Garzik
2006-05-23 13:59                       ` Tejun Heo
2006-05-17  0:31               ` Jeff Garzik
2006-05-17  0:50                 ` Tejun Heo
2006-05-17  0:57                   ` Tejun Heo
2006-05-17  2:22                     ` Ric Wheeler
2006-05-17  1:37                       ` Tejun Heo
2006-05-17  3:57                         ` Ric Wheeler
2006-05-17  4:44                           ` Tejun Heo
2006-05-17 11:30                             ` Ric Wheeler
2006-05-17 20:45                             ` Ric Wheeler
2006-05-17 21:01                             ` Mark Lord
2006-05-17 21:04                               ` Jeff Garzik
2006-05-17 21:50                                 ` Tejun Heo
2006-05-17 21:56                                   ` Mark Lord
2006-05-17 22:00                                     ` Jeff Garzik
2006-05-17 22:03                                       ` Mark Lord
2006-05-17 22:13                                         ` Jeff Garzik
2006-05-18  3:33                                     ` Ric Wheeler
2006-05-18  3:26                                       ` Tejun Heo
2006-05-18 11:58                                         ` Ric Wheeler
2006-05-18 12:52                                           ` Mark Lord
2006-05-18 13:22                                             ` Ric Wheeler
2006-05-18 13:37                                               ` Jens Axboe
2006-05-17  1:13                   ` Jeff Garzik
2006-05-17  1:14                   ` Jeff Garzik
2006-05-17  2:16           ` Ric Wheeler
2006-05-16 23:34       ` Jeff Garzik
2006-05-16 23:53         ` Tejun Heo
2006-05-17  2:05 ` Andrew Morton
2006-05-17  4:49   ` Tejun Heo
2006-05-17  4:56     ` Andrew Morton
2006-05-17  5:14       ` Tejun Heo
2006-05-17  6:35         ` Tejun Heo
2006-05-18 11:24           ` Albert Lee
2006-05-18 11:33             ` Tejun Heo
2006-05-19 10:37               ` Albert Lee
2006-05-19 11:03                 ` Tejun Heo
2006-05-22  3:51                   ` [PATCH 1/1] libata: use polling pio for identify device Albert Lee
2006-05-22  6:24                     ` Jeff Garzik
2006-05-23  2:27                       ` Albert Lee
2006-05-18 23:07           ` [RFT] major libata update Andrew Morton
2006-05-19  1:14             ` Tejun Heo
2006-05-19  2:06               ` Jeff Garzik
2006-05-19  2:16                 ` Tejun Heo
2006-05-22  7:22           ` Jeff Garzik
2006-05-21 23:51 ` Michael Sterrett -Mr. Bones.-
2006-05-22  2:42   ` Tejun Heo
2006-05-22  3:42     ` Michael Sterrett -Mr. Bones.-
2006-05-22  6:23     ` Michael Sterrett -Mr. Bones.-
     [not found] <6cOK9-5WZ-21@gated-at.bofh.it>
     [not found] ` <6cUPu-6Dh-5@gated-at.bofh.it>
     [not found]   ` <6cV8V-71t-3@gated-at.bofh.it>
     [not found]     ` <6cYzI-3yr-3@gated-at.bofh.it>
     [not found]       ` <6cYT8-3Vy-7@gated-at.bofh.it>
     [not found]         ` <6cZvL-4Vb-1@gated-at.bofh.it>
2006-05-16  5:33           ` Robert Hancock
  -- strict thread matches above, loose matches on Subject: below --
2006-05-17  7:35 Matthieu CASTET
2006-05-18  0:36 Brown, Len
2006-05-18  0:36 ` Brown, Len

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