Re: slave_destroy called in scsi_scan.c:scsi_probe_and_add_lun()

[Luben Tuikov <luben@splentec.com>]

Andrew Morton wrote:
> 
[...]
> So I expect that in practice we would be unlikely to go beyond
> 128 requests per direction per queue.  But it should be an
> option, and it should work well.

I have an actual number: 512*. This is the number which /proc/slabinfo
tells me, and I suspect that the number of active (LLDD owner) commands
is a lot less than this.**

* I get this number when writing (I->T) just over 100 GiB file,
using a ``mini'' scsi-core which I wrote for a project at work.
And this, 512, number is the largest value I've seen so far,
i.e. the largest pool.

** I can actually obtain the exact (average) number of active commands
but I don't think that there's any need to. (QED)

But, yes, using the slab allocator (with the appropriate flags(!), etc...)
isn't a bad idea at all.

-- 
Luben