On 21.02.2017 15:58, Kevin Wolf wrote: > Backing files are somewhat special compared to other kinds of children > because they are attached and detached using bdrv_set_backing_hd() > rather than the normal set of functions, which does a few more things > like setting backing blockers, toggling the BDRV_O_NO_BACKING flag, > setting parent_bs->backing_file, etc. > > These special features are a reason why change_parent_backing_link() > can't handle backing files yet. With abstracting the additional features > into .attach/.detach callbacks, we get a step closer to a function that > can actually deal with this. > > Signed-off-by: Kevin Wolf <kw...@redhat.com> > --- > block.c | 94 > +++++++++++++++++++++++++++++------------------ > include/block/block_int.h | 3 ++ > 2 files changed, 62 insertions(+), 35 deletions(-)
Reviewed-by: Max Reitz <mre...@redhat.com>
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