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| author | Kevin Wolf <kwolf@redhat.com> | 2017-02-08 11:28:52 +0100 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2017-02-28 20:40:37 +0100 |
| commit | db95dbba3b7b09cd11ffaf3a8453c2500e807f80 (patch) | |
| tree | ac4930f31c65faba839762df0ad5ca065f75042c /qemu-io-cmds.c | |
| parent | dd65a52e4aa4a0adfedf0ed9a35da1960f359fe1 (diff) | |
| download | focaccia-qemu-db95dbba3b7b09cd11ffaf3a8453c2500e807f80.tar.gz focaccia-qemu-db95dbba3b7b09cd11ffaf3a8453c2500e807f80.zip | |
block: BdrvChildRole.attach/detach() callbacks
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 <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Acked-by: Fam Zheng <famz@redhat.com>
Diffstat (limited to 'qemu-io-cmds.c')
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