From: Russell King <rmk@arm.linux.org.uk>
To: Tejun Heo <htejun@gmail.com>
Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>,
James Steward <james.steward@dynamicratings.com>,
"linux-ide@vger.kernel.org" <linux-ide@vger.kernel.org>
Subject: Re: [PATCH] ide: add dcache flushing after PIO
Date: Wed, 21 Dec 2005 14:03:45 +0000 [thread overview]
Message-ID: <20051221140344.GA1736@flint.arm.linux.org.uk> (raw)
In-Reply-To: <20051221140022.GA25001@htj.dyndns.org>
On Wed, Dec 21, 2005 at 11:00:22PM +0900, Tejun Heo wrote:
> Block drivers are responsible for cache coherency before and after IO.
> When using DMA, DMA API takes care of it but drivers should do manual
> flushing with PIO.
Are you sure you need the ones in the write path? No other driver
seems to do this.
--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of: 2.6 Serial core
next prev parent reply other threads:[~2005-12-21 14:03 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-19 0:47 Execute from CF causes segmentation faults James Steward
2005-12-20 12:52 ` Tejun Heo
2005-12-20 16:23 ` Bartlomiej Zolnierkiewicz
2005-12-21 9:48 ` Tejun Heo
2005-12-21 14:00 ` [PATCH] ide: add dcache flushing after PIO Tejun Heo
2005-12-21 14:03 ` Russell King [this message]
2005-12-21 14:43 ` Tejun Heo
2005-12-21 15:57 ` Bartlomiej Zolnierkiewicz
2005-12-21 16:00 ` Tejun Heo
2005-12-21 17:54 ` Russell King
2006-01-07 17:06 ` Russell King
2006-01-07 20:17 ` Bartlomiej Zolnierkiewicz
2006-01-07 21:22 ` Russell King
2006-01-07 22:41 ` Bartlomiej Zolnierkiewicz
2006-01-08 0:50 ` james
2006-01-09 9:08 ` Russell King
2006-01-09 9:16 ` Tejun Heo
2005-12-21 15:01 ` Execute from CF causes segmentation faults Russell King
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