Re: Which is simpler? (Was Re: [Suspend2-devel] Re: [ 00/10] [Suspend2] Modules support.)

[Pavel Machek <pavel@suse.cz>]

Hi!

> > well, we can perfectly do 128K block... just read 128K into userspace
> > buffer, flush it via single write to block device. That should get us
> > very close enough to media speed.
> 
> That'll help naturally, 128k sync blocks will be very close to async
> performance for most cases. Most cases here being drives with write back
> caching enabled, if that is disabled async will still be a big win.
> 
> Is there any reason _not_ to just go with async io? Usually the code is
> just as simple (or simpler), since the in-kernel stuff is inherently
> async to begin with.

Keeping it simple... when we are moving to doing writeback in
userland, anyway.
								Pavel
-- 
Web maintainer for suspend.sf.net (www.sf.net/projects/suspend) wanted...
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