iSCSI and scatterlists

[Matthew Wilcox <matthew@xxxxxx>]

On Wed, Mar 16, 2005 at 10:44:50AM -0800, Mike Christie wrote:
> I got lost here. If you are talking about the need to kmap a sglist then 
> software iscsi has it. iscsi-sfnet used to do
> 
> while (...)
>       kmap()
> 
> but I fixed that (I think I need to use kmap_atomic though, is that 
> correct or is it just a performance improvement - I am calling kmap from 
> a thread too so). I just added kmap_atomic to open-iscsi and I believe 
> pyx does something similar to the loop above.

Sounds like networking should grow an interface to accept a sglist as
input.  I'm really not familiar with Linux's networking stack to know
how to do it ... cc'ing netdev to get their thoughts.

-- 
"Next the statesmen will invent cheap lies, putting the blame upon 
the nation that is attacked, and every man will be glad of those
conscience-soothing falsities, and will diligently study them, and refuse
to examine any refutations of them; and thus he will by and by convince 
himself that the war is just, and will thank God for the better sleep 
he enjoys after this process of grotesque self-deception." -- Mark Twain