On Tue, Jul 11, 2017 at 07:37:45PM +0300, Manos Pitsidianakis wrote: > The following functions fail if bs->drv is a filter and does not > implement them: > > bdrv_probe_blocksizes > bdrv_probe_geometry > bdrv_truncate > bdrv_has_zero_init > bdrv_get_info > > Instead, the call should be passed to bs->file if it exists, to allow > filter drivers to support those methods without implementing them. This > commit makes `drv->is_filter = true` imply that these callbacks will be > forwarded to bs->file by default, so disabling support for these > functions must be done explicitly. > > Signed-off-by: Manos Pitsidianakis <el13...@mail.ntua.gr> > --- > block.c | 21 +++++++++++++++++++-- > include/block/block_int.h | 6 +++++- > 2 files changed, 24 insertions(+), 3 deletions(-)
Reviewed-by: Stefan Hajnoczi <stefa...@redhat.com>
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