PATCH samba cache and read-ahead

[Amin Azez]

* Jeremy Allison wrote, On 03/01/08 17:40:
> On Thu, Jan 03, 2008 at 11:07:04AM +0000, Amin Azez wrote:
>   
>> but INFO_LEVEL seems to suggest something else not from the same range
>> that the TRANSCAT2_* opcodes occupy.
>>
>> Nothing seems to be making use of the INFO_LEVEL_IS_UNIX macro (not that
>> smb caching is restricted to Unix anyway)
>>
>> In short, I'm not able to be certain which TRANS2 sub command range I
>> can use, please could you offer some advice?
>> And should I use multiple TRANSACT2 sub opcodes, or make some sub-sub
>> opcodes do you think?
>>     
>
> Check out include/trans2.h in S3, and also the header files in cifsfs.
> Currently that's where the allocations in this range are being done.
>   
trans2.h there didn't reveal much more than in S4, but I found:
http://www.sambaxp.org/uploads/media/08-Jeremy_Allison_-_CIFS_to_the_Desktop.pdf

which indicated that 0x200-0x2FF reserved range are from the same
sequence as the obviously TRANS sub-ops like TRANSACT2_* so I guess that
is the reserved range being spoken of.
> It's not formal right now, so please coordinate with myself and Stevef
> to get an allocation.
>   
There is nothing unix-specific about the caching and compression proxy
operations, but it looks like 0x200-0x2FF is the only reserved range
that has someone nearby who can allocate numbers -

So... Steve and Jeremy; please would you allocate me one TRANS2
sub-opode in the range 0x200-0x2FF which can be used for calls between
caching proxies.

Thanks

Sam