From: Jeff Garzik <jgarzik@pobox.com>
To: Tejun Heo <htejun@gmail.com>
Cc: axboe@suse.de, bzolnier@gmail.com, rmk@arm.linux.org.uk,
james.steward@dynamicratings.com, James.Bottomley@SteelEye.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCHSET] block: fix PIO cache coherency bug
Date: Tue, 17 Jan 2006 10:00:09 -0500 [thread overview]
Message-ID: <43CD0679.4070202@pobox.com> (raw)
In-Reply-To: <11371658562541-git-send-email-htejun@gmail.com>
Tejun Heo wrote:
> Hello, all.
>
> This patchset tries to fix data corruption bug caused by not handling
> cache coherency during block PIO. This patch implements
> blk_kmap/unmap helpers which take extra @dir argument and perform
> appropriate coherency actions. These are to block PIO what dma_map/
> unmap are to block DMA transfers.
>
> IDE, libata, SCSI, rd and md are converted. Still left are nbd, loop
> and pktcddvd. If I missed something, please let me know.
>
> Russell, can you please test whether this fixes the bug on arm? If
> this fixes the bug and people agree with the approach, I'll follow up
> with patches for yet unconverted drivers and documentation update.
I ACK the libata portions, but I will let others ACK the overall
patchset goal (hopefully the arch people).
Jeff
prev parent reply other threads:[~2006-01-17 15:02 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-13 15:24 [PATCHSET] block: fix PIO cache coherency bug Tejun Heo
2006-01-13 15:24 ` [PATCH 3/8] block: convert bio kmap helpers to use blk_kmap helpers Tejun Heo
2006-01-13 15:24 ` [PATCH 2/8] block: implement blk kmap helpers Tejun Heo
2006-01-13 15:24 ` [PATCH 5/8] block: convert libata to use blk_kmap helpers Tejun Heo
2006-01-13 15:24 ` [PATCH 4/8] block: convert IDE " Tejun Heo
2006-02-14 19:07 ` Matt Reimer
2006-02-15 2:05 ` Tejun Heo
2006-02-16 18:01 ` Russell King
2006-02-16 18:10 ` Linus Torvalds
2006-02-16 19:02 ` Russell King
2006-01-13 15:24 ` [PATCH 1/8] highmem: include asm/kmap_types.h in linux/highmem.h Tejun Heo
2006-01-13 15:24 ` [PATCH 8/8] block: convert md to use blk_kmap helpers Tejun Heo
2006-01-13 15:24 ` [PATCH 6/8] block: convert scsi " Tejun Heo
2006-01-13 15:24 ` [PATCH 7/8] block: convert block/rd.c " Tejun Heo
2006-01-13 15:37 ` [PATCHSET] block: fix PIO cache coherency bug Jens Axboe
2006-01-13 15:47 ` Bartlomiej Zolnierkiewicz
2006-01-13 15:50 ` James Bottomley
2006-01-13 18:20 ` Russell King
2006-01-13 18:35 ` James Bottomley
2006-01-13 19:06 ` Russell King
2006-02-22 8:27 ` Tejun Heo
2006-03-02 18:46 ` James Bottomley
2006-03-02 20:30 ` Russell King
2006-03-02 20:43 ` James Bottomley
2006-03-02 20:57 ` Russell King
2006-03-02 20:44 ` Jens Axboe
2006-05-29 19:17 ` Nicolas Pitre
2006-05-30 11:19 ` Tejun Heo
2006-05-30 21:07 ` Guennadi Liakhovetski
2006-05-30 21:32 ` Nicolas Pitre
2006-05-31 0:57 ` David S. Miller
2006-03-02 20:40 ` Jens Axboe
2006-03-20 16:12 ` James Bottomley
2006-03-20 16:26 ` Tejun Heo
2006-03-20 16:33 ` James Bottomley
2006-03-20 16:40 ` Tejun Heo
2006-03-20 16:48 ` James Bottomley
2006-03-23 14:23 ` James Bottomley
2006-03-20 16:50 ` Randy.Dunlap
2006-03-20 16:52 ` James Bottomley
2006-01-13 22:02 ` Russell King
2006-01-13 22:38 ` James Bottomley
2006-01-13 22:43 ` David S. Miller
2006-01-14 4:58 ` James Bottomley
2006-01-17 15:00 ` Jeff Garzik [this message]
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