diff mbox

[V13,11/13] quorum: Implement recursive .bdrv_recurse_is_first_non_filter in quorum.

Message ID 1391443352-6386-12-git-send-email-benoit.canet@irqsave.net
State New
Headers show

Commit Message

Benoît Canet Feb. 3, 2014, 4:02 p.m. UTC 
From: Benoît Canet <benoit@irqsave.net>

Signed-off-by: Benoit Canet <benoit@irqsave.net>
Reviewed-by: Max Reitz <mreitz@redhat.com>
---
 block/quorum.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
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Patch

diff --git a/block/quorum.c b/block/quorum.c
index 43144a5..1e0c94e 100644
--- a/block/quorum.c
+++ b/block/quorum.c
@@ -702,6 +702,23 @@  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->total; 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",
@@ -716,6 +733,8 @@  static BlockDriver bdrv_quorum = {
     .bdrv_aio_writev    = quorum_aio_writev,
     .bdrv_invalidate_cache = quorum_invalidate_cache,
     .bdrv_co_get_block_status = quorum_co_get_block_status,
+
+    .bdrv_recurse_is_first_non_filter = quorum_recurse_is_first_non_filter,
 };
 
 static void bdrv_quorum_init(void)