[Xen-devel] [PATCH 0/2] Change xs_read_watch interfaces to support variable arguments

[Anthony Liguori <aliguori@xxxxxxxxxx>]

The following set of changes modify the read_watch interface in 
userspace and in the kernel to support variable arguments.  This is in 
preparation for adding domid to @{introduce,release}Domain watches.  
This will allow backends to automatically reap on domain destruction 
which should eliminate a large number of the zombie problems we're 
having on domain destruction since Xend no longer plays a role in 
freeing that memory.
The interface for read_watch is now consistent between userspace and 
kernel space.  It's modelled after xs_read_directory.  The returned 
array is indexable via XS_WATCH_* macros.
While slightly awkward, IMHO it seems like the cleanest and most 
flexible option of the proposed interfaces.
Signed-off-by: Anthony Liguori <aliguori@xxxxxxxxxx>

Regards,

Anthony Liguori

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