Messages in this thread | | | From | "Stephen C. Tweedie" <> | Date | Mon, 29 Nov 1999 13:13:02 +0000 (GMT) | Subject | Re: "raw"-ramdisk & cache |
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Hi,
On Fri, 26 Nov 1999 08:34:09 +0100, "Ph. Marek" <marek@bmlv.gv.at> said:
> as far as i can tell, a ramdrive gets handled the same as every > other block device and is therefore also cached. is there > (currently) an easy way to stop this?
A ramdisk *is* the cached copy.
> is there something like the unbuffered partition entries, a > "raw"-ramdrive?
What for? The ramdisk lives in the cache --- there is no other copy --- and so it cannot be uncached!
If you wanted a different sort of ramdisk you could write one, but if you want to access it as a block device, it will necessarily use the buffer cache anyway: that is an invariant of all block devices (the whole point of block devices vs. character devices is that there is a uniform buffer cache access mechanism to all block devices).
--Stephen
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