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authorStefan Hajnoczi <stefanha@redhat.com>2014-05-08 16:34:46 +0200
committerStefan Hajnoczi <stefanha@redhat.com>2014-06-04 09:56:11 +0200
commite3625d3d6ae8029fc20262ac3848421ec281446f (patch)
treeafeee9e2242d810be542bd71a853541cb17d8b82 /block/quorum.c
parenta8c868c386d4cbdd0fc0a9423c6683880f6e75e4 (diff)
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quorum: implement .bdrv_detach/attach_aio_context()
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: BenoƮt Canet <benoit.canet@irqsave.net> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'block/quorum.c')
-rw-r--r--block/quorum.c48
1 files changed, 36 insertions, 12 deletions
diff --git a/block/quorum.c b/block/quorum.c
index ecec3a5..426077a 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)