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author | BenoƮt Canet <benoit@irqsave.net> | 2014-02-21 22:21:19 +0100 |
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committer | Kevin Wolf <kwolf@redhat.com> | 2014-02-21 22:29:51 +0100 |
commit | 98a7a38f81af2b79a134eaa6cbed543aa3ca5fe2 (patch) | |
tree | 9e97f594a25a19080e0e1d08f042030df406fac5 | |
parent | 1c508d174d4b9dfd066c3729a2560afeef5e081f (diff) | |
download | qemu-98a7a38f81af2b79a134eaa6cbed543aa3ca5fe2.zip qemu-98a7a38f81af2b79a134eaa6cbed543aa3ca5fe2.tar.gz qemu-98a7a38f81af2b79a134eaa6cbed543aa3ca5fe2.tar.bz2 |
quorum: Implement recursive .bdrv_recurse_is_first_non_filter in quorum.
This is used to activate quorum snapshot.
Signed-off-by: Benoit Canet <benoit@irqsave.net>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
-rw-r--r-- | block/quorum.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/block/quorum.c b/block/quorum.c index 840afda..1b2b56f 100644 --- a/block/quorum.c +++ b/block/quorum.c @@ -655,6 +655,23 @@ static coroutine_fn int quorum_co_flush(BlockDriverState *bs) return result; } +static bool quorum_recurse_is_first_non_filter(BlockDriverState *bs, + BlockDriverState *candidate) +{ + BDRVQuorumState *s = bs->opaque; + int i; + + for (i = 0; i < s->num_children; i++) { + bool perm = bdrv_recurse_is_first_non_filter(s->bs[i], + candidate); + if (perm) { + return true; + } + } + + return false; +} + static BlockDriver bdrv_quorum = { .format_name = "quorum", .protocol_name = "quorum", @@ -668,6 +685,8 @@ static BlockDriver bdrv_quorum = { .bdrv_aio_readv = quorum_aio_readv, .bdrv_aio_writev = quorum_aio_writev, .bdrv_invalidate_cache = quorum_invalidate_cache, + + .bdrv_recurse_is_first_non_filter = quorum_recurse_is_first_non_filter, }; static void bdrv_quorum_init(void) |