Messages in this thread | | | Date | Tue, 17 Jan 2006 10:00:09 -0500 | From | Jeff Garzik <> | Subject | Re: [PATCHSET] block: fix PIO cache coherency bug |
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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
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