[dcmf] Lockless ROMIO driver

[Bob Cernohous]

Could someone give me a brief synopsis or pointer to the "locking issues" 
with NFS?   I'd like to understand it better and maybe discuss this with 
our GPFS experts.   I just wonder if it's better, long term, to go 
lockless in ad_bgl and build bgl+nfs as a fallback for NFS?   It's 
certainly something we could explore on this list, but I don't know 
if/when it would make it into an IBM release.   There's certainly some 
"process" we're still inventing/exploring here on this list.

Rob, I didn't have time yet to dig into your patch.  But I suspect you 
have not applied my recent patches from this list to your source.  I think 
there might be a conflict.  I'll look into it later.  I'm moving my office 
today, plus I've been swamped with some side issues.

Bob Cernohous:  (T/L 553) 507-253-6093

BobC at us.ibm.com
IBM Rochester, Building 030-2(C335), Department 61L
3605 Hwy 52 North, Rochester,  MN 55901-7829

> Chaos reigns within.
> Reflect, repent, and reboot.
> Order shall return.



> These patches re-introduce ad_ufs to ROMIO, but do so in a lock-freeway. 
 This
> is my first git experience, so sorry for the messy subject lines.
> 
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