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[Qemu-devel] [PATCH V18 10/12] quorum: Implement recursive .bdrv_recurse
From: |
Benoît Canet |
Subject: |
[Qemu-devel] [PATCH V18 10/12] quorum: Implement recursive .bdrv_recurse_is_first_non_filter in quorum. |
Date: |
Tue, 18 Feb 2014 13:11:25 +0100 |
From: Benoît Canet <address@hidden>
This is used to activate quorum snapshot.
Signed-off-by: Benoit Canet <address@hidden>
Reviewed-by: Max Reitz <address@hidden>
---
block/quorum.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/block/quorum.c b/block/quorum.c
index 1007dfc..40832c0 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)
--
1.8.3.2
- [Qemu-devel] [PATCH V18 00/12] Quorum block filter, Benoît Canet, 2014/02/18
- [Qemu-devel] [PATCH V18 02/12] quorum: Create BDRVQuorumState and BlkDriver and do init., Benoît Canet, 2014/02/18
- [Qemu-devel] [PATCH V18 08/12] quorum: Add quorum_invalidate_cache()., Benoît Canet, 2014/02/18
- [Qemu-devel] [PATCH V18 01/12] quorum: Create quorum.c, add QuorumChildRequest and QuorumAIOCB., Benoît Canet, 2014/02/18
- [Qemu-devel] [PATCH V18 12/12] quorum: Add unit test., Benoît Canet, 2014/02/18
- [Qemu-devel] [PATCH V18 05/12] quorum: Add quorum_aio_readv., Benoît Canet, 2014/02/18
- [Qemu-devel] [PATCH V18 07/12] quorum: Add quorum_getlength()., Benoît Canet, 2014/02/18
- [Qemu-devel] [PATCH V18 10/12] quorum: Implement recursive .bdrv_recurse_is_first_non_filter in quorum.,
Benoît Canet <=
- [Qemu-devel] [PATCH V18 03/12] quorum: Add quorum_aio_writev and its dependencies., Benoît Canet, 2014/02/18
- [Qemu-devel] [PATCH V18 11/12] quorum: Add quorum_open() and quorum_close()., Benoît Canet, 2014/02/18
- Re: [Qemu-devel] [PATCH V18 11/12] quorum: Add quorum_open() and quorum_close()., Max Reitz, 2014/02/18
- [Qemu-devel] [PATCH V18 04/12] blkverify: Extract qemu_iovec_clone() and qemu_iovec_compare() from blkverify., Benoît Canet, 2014/02/18
- [Qemu-devel] [PATCH V18 06/12] quorum: Add quorum mechanism., Benoît Canet, 2014/02/18