Re: [RFC] kernel facilities for cache prefetching

[Pavel Machek]

Hi!

> SOC PROPOSAL
> 
> 	Rapid linux desktop startup through pre-caching

Looks nice me...

> SCHEME/GOAL
> 	2) kernel module to query the file cache
> 		- on loading: create /proc/filecache
> 		- setting up: echo "param value" > /proc/filecache
> 		- info query: cat /proc/filecache
> 		- sample sessions:
> 
> 		# modprobe filecache
> 		$ cat /proc/filecache
> 		# file ALL
> 		# mask 0
> 		#
> 		# ino	size	cached	status	refcnt	name
> 		0	2929846	3181	D	1	/dev/hda1
> 		81455	9	9	_	1	/sbin/init
> 		......
> 	
> 		$ echo "file /dev/hda1" > /proc/filecache
> 		$ cat /proc/filecache
> 		# file /dev/hda1
> 		# mask 0
> 		#
> 		# idx	len
> 		0	24
> 		48	2
> 		53	5
> 		......

Could we use this instead of blockdev freezing/big suspend image
support? It should permit us to resume quickly (with small image), and
then do readahead. ... that will give us usable machine quickly, still
very responsive desktop after resume?

								Pavel
-- 
Thanks for all the (sleeping) penguins.
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