Messages in this thread | | | Date | Sun, 1 Sep 2002 11:31:42 -0500 (CDT) | From | Thomas Molina <> | Subject | Re: 2.5.33-bk testing |
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On Sun, 1 Sep 2002, Mikael Pettersson wrote:
> I was able to get 2.5.33 (even with your patch) to corrupt data > in a few seconds: writes (with dd) put corrupted data on the > media, and reads (again with dd) returns data that doesn't > match what's on the media.
I don't know why I didn't see the corruption the first time around. However, I repeated the tests with Linus' floppy update and saw the same thing you did. dd if=/dev/fd0 of=floppyimage produced corrupt output, as did a dd write to floppy command.
> The patch below is an update of the floppy workarounds patch > I've been maintaining since the problems began in 2.5.13. > With this patch I'm able to reliably read and write to the > raw /dev/fd0 device. I'm not suggesting that my hack to > bdev->bd_block_size is the correct fix, but maybe someone who > understands the block I/O system can see what's going on and > do a proper fix.
Thanks. Adding your workaround produced correct outputs. I hope we can some other eyes on the code and get it integrated into mainline.
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