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Subjectioctl to discard clean buffers?
I think there's currently one an ioctl() to flush dirty buffers, and 
then discard the buffers (hope there are no race conditions ;-))

Is the a ioctl() to just invalidate clean buffers? A friend has some
bad hardware that sometimes gets an undetected read error from
/dev/sda. As the error is rather rare, re-reading the file would
help.

Ulrich


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