Re: [Xen-devel] Re: [5 Patches] Synchronize blktap with citrix blktap2.

[Dutch Meyer <dmeyer@xxxxxxxxx>]

> It seems that the "readonly" flag was removed...but I can't seem to find
> much documentation, or examples on how this might be used, so I might be
> way off base here
Internally, the flag changed to TD_OPEN_RDONLY, but that shouldn't have 
any effect from a user perspective.  Normal usage shouldn't be changed 
from the original blktap, you should be able to boot tap disks just as 
before.
Internally, the other tap drivers have all been updated to take advantage 
of the new (and simplified) API.  If you take a look there you'll see the 
updates.
> The introduction of the new blktaplib.h does introduce a significant
> number of new warnings to the qemu build though.
This is unexpected, but I see now how it could happen under certain 
conditions.  I will fix this today by NOT installing the "new" blktaplib.h 
into /usr/include.  This will ensure that anyone who has build anything 
with #include <blktaplib.h> dependencies will continue to see the old 
version, which should be appropriate until the old blktap is fully 
removed.
--Dutch

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