Re: Block device strategy and requests

2001-04-26 Thread Jeremy Jackson
Malcolm Beattie wrote: > I'm designing a block device driver for a high performance disk > subsystem with unusual characteristics. To what extent is the > limited number of "struct request"s (128 by default) necessary for > back-pressure? With this I/O subsystem it would be possible for the > str

Re: Block device strategy and requests

2001-04-26 Thread Jens Axboe
On Thu, Apr 26 2001, Malcolm Beattie wrote: > I'm designing a block device driver for a high performance disk > subsystem with unusual characteristics. To what extent is the > limited number of "struct request"s (128 by default) necessary for > back-pressure? With this I/O subsystem it would be po