From e3625d3d6ae8029fc20262ac3848421ec281446f Mon Sep 17 00:00:00 2001 From: Stefan Hajnoczi Date: Thu, 8 May 2014 16:34:46 +0200 Subject: quorum: implement .bdrv_detach/attach_aio_context() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Implement .bdrv_detach/attach_aio_context() interfaces to propagate detach/attach to BDRVQuorumState->bs[] children. The block layer takes care of ->file and ->backing_hd but doesn't know about our ->bs[] BlockDriverStates, which is also part of the graph. Reviewed-by: Benoît Canet Signed-off-by: Stefan Hajnoczi --- block/quorum.c | 48 ++++++++++++++++++++++++++++++++++++------------ 1 file changed, 36 insertions(+), 12 deletions(-) (limited to 'block/quorum.c') diff --git a/block/quorum.c b/block/quorum.c index ecec3a5407..426077a520 100644 --- a/block/quorum.c +++ b/block/quorum.c @@ -848,25 +848,49 @@ static void quorum_close(BlockDriverState *bs) g_free(s->bs); } +static void quorum_detach_aio_context(BlockDriverState *bs) +{ + BDRVQuorumState *s = bs->opaque; + int i; + + for (i = 0; i < s->num_children; i++) { + bdrv_detach_aio_context(s->bs[i]); + } +} + +static void quorum_attach_aio_context(BlockDriverState *bs, + AioContext *new_context) +{ + BDRVQuorumState *s = bs->opaque; + int i; + + for (i = 0; i < s->num_children; i++) { + bdrv_attach_aio_context(s->bs[i], new_context); + } +} + static BlockDriver bdrv_quorum = { - .format_name = "quorum", - .protocol_name = "quorum", + .format_name = "quorum", + .protocol_name = "quorum", + + .instance_size = sizeof(BDRVQuorumState), - .instance_size = sizeof(BDRVQuorumState), + .bdrv_file_open = quorum_open, + .bdrv_close = quorum_close, - .bdrv_file_open = quorum_open, - .bdrv_close = quorum_close, + .bdrv_co_flush_to_disk = quorum_co_flush, - .bdrv_co_flush_to_disk = quorum_co_flush, + .bdrv_getlength = quorum_getlength, - .bdrv_getlength = quorum_getlength, + .bdrv_aio_readv = quorum_aio_readv, + .bdrv_aio_writev = quorum_aio_writev, + .bdrv_invalidate_cache = quorum_invalidate_cache, - .bdrv_aio_readv = quorum_aio_readv, - .bdrv_aio_writev = quorum_aio_writev, - .bdrv_invalidate_cache = quorum_invalidate_cache, + .bdrv_detach_aio_context = quorum_detach_aio_context, + .bdrv_attach_aio_context = quorum_attach_aio_context, - .is_filter = true, - .bdrv_recurse_is_first_non_filter = quorum_recurse_is_first_non_filter, + .is_filter = true, + .bdrv_recurse_is_first_non_filter = quorum_recurse_is_first_non_filter, }; static void bdrv_quorum_init(void) -- cgit v1.2.1