Re: o_sync in vfat driver

On Út 28-02-06 00:21:53, col-pepper@xxxxxxxxxxx wrote:
On Mon, 27 Feb 2006 22:32:07 +0100, linux-os (*** Johnson)
<linux-os@xxxxxxxxxxxx> wrote:

Flash does not get zeroed to be written! It gets erased, which sets all
the bits to '1', i.e., all bytes to 0xff.

Thanks for the correction, but that does not change the discussion.

Further, the designers of
flash disks are not stupid as you assume. The direct access occurs
to static RAM (read/write stuff).

I'm not assuming anything . Some hardware has been killed by this issue.
http://lkml.org/lkml/2005/5/13/144

I have seen flash disk dead in 5 minutes, even without o-sync. Those
devices are often crap. (I copied tar file to flash by cat foo.tar >
/dev/sda. That was apparently enough to kill that flash. Label "Yahoo"
should have warned me).
Pavel
--
Web maintainer for suspend.sf.net (www.sf.net/projects/suspend) wanted...
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