On 05/30/2013 06:34 AM, Stefan Hajnoczi wrote: > The bdrv_add_before_write_notifier() function installs a callback that > is invoked before a write request is processed. This will be used to > implement copy-on-write point-in-time snapshots where we need to copy > out old data before overwriting it. > > Note that BdrvTrackedRequest is moved to block_int.h since it is passed > to .notify() functions. > > Signed-off-by: Stefan Hajnoczi <stefa...@redhat.com> > --- > block.c | 23 ++++++++++++----------- > include/block/block_int.h | 23 ++++++++++++++++++++++- > 2 files changed, 34 insertions(+), 12 deletions(-)
Reviewed-by: Eric Blake <ebl...@redhat.com> -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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