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[Qemu-devel] [RFC PATCH 4/7] block-backend: Add blk_op_blocker_add_notif
From: |
Fam Zheng |
Subject: |
[Qemu-devel] [RFC PATCH 4/7] block-backend: Add blk_op_blocker_add_notifier |
Date: |
Wed, 6 May 2015 19:23:36 +0800 |
Forward the call to bdrv_op_blocker_add_notifier.
Signed-off-by: Fam Zheng <address@hidden>
---
block.c | 4 ++--
block/block-backend.c | 6 ++++++
include/sysemu/block-backend.h | 2 ++
3 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/block.c b/block.c
index 054ddb4..d98a304 100644
--- a/block.c
+++ b/block.c
@@ -3414,23 +3414,23 @@ void bdrv_op_block(BlockDriverState *bs, BlockOpType
op, Error *reason)
BdrvOpBlocker *blocker;
assert((int) op >= 0 && op < BLOCK_OP_TYPE_MAX);
- bdrv_op_blocker_notify(bs, op, reason, true);
blocker = g_new0(BdrvOpBlocker, 1);
blocker->reason = reason;
QLIST_INSERT_HEAD(&bs->op_blockers[op], blocker, list);
+ bdrv_op_blocker_notify(bs, op, reason, true);
}
void bdrv_op_unblock(BlockDriverState *bs, BlockOpType op, Error *reason)
{
BdrvOpBlocker *blocker, *next;
assert((int) op >= 0 && op < BLOCK_OP_TYPE_MAX);
- bdrv_op_blocker_notify(bs, op, reason, false);
QLIST_FOREACH_SAFE(blocker, &bs->op_blockers[op], list, next) {
if (blocker->reason == reason) {
QLIST_REMOVE(blocker, list);
g_free(blocker);
}
}
+ bdrv_op_blocker_notify(bs, op, reason, false);
}
void bdrv_op_block_all(BlockDriverState *bs, Error *reason)
diff --git a/block/block-backend.c b/block/block-backend.c
index 71fc695..90d7476 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -806,6 +806,12 @@ void blk_op_unblock_all(BlockBackend *blk, Error *reason)
bdrv_op_unblock_all(blk->bs, reason);
}
+void blk_op_blocker_add_notifier(BlockBackend *blk,
+ Notifier *notifier)
+{
+ bdrv_op_blocker_add_notifier(blk->bs, notifier);
+}
+
AioContext *blk_get_aio_context(BlockBackend *blk)
{
return bdrv_get_aio_context(blk->bs);
diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h
index b4a4d5e..cde9651 100644
--- a/include/sysemu/block-backend.h
+++ b/include/sysemu/block-backend.h
@@ -136,6 +136,8 @@ int blk_get_flags(BlockBackend *blk);
int blk_get_max_transfer_length(BlockBackend *blk);
void blk_set_guest_block_size(BlockBackend *blk, int align);
void *blk_blockalign(BlockBackend *blk, size_t size);
+void blk_op_blocker_add_notifier(BlockBackend *blk,
+ Notifier *notifier);
bool blk_op_is_blocked(BlockBackend *blk, BlockOpType op, Error **errp);
void blk_op_unblock(BlockBackend *blk, BlockOpType op, Error *reason);
void blk_op_block_all(BlockBackend *blk, Error *reason);
--
1.9.3
- [Qemu-devel] [RFC PATCH 0/7] Fix transactional snapshot with virtio-blk dataplane, Fam Zheng, 2015/05/06
- [Qemu-devel] [RFC PATCH 1/7] block: Add op blocker type "device IO", Fam Zheng, 2015/05/06
- [Qemu-devel] [RFC PATCH 3/7] block: Add op blocker notifier list, Fam Zheng, 2015/05/06
- [Qemu-devel] [RFC PATCH 4/7] block-backend: Add blk_op_blocker_add_notifier,
Fam Zheng <=
- [Qemu-devel] [RFC PATCH 2/7] block: Block "device IO" during bdrv_drain and bdrv_drain_all, Fam Zheng, 2015/05/06
- [Qemu-devel] [RFC PATCH 5/7] virtio-blk: Move complete_request to 'ops' structure, Fam Zheng, 2015/05/06
- [Qemu-devel] [RFC PATCH 7/7] blockdev: Add "device IO" op blocker during snapshot transaction, Fam Zheng, 2015/05/06
- [Qemu-devel] [RFC PATCH 6/7] virtio-blk: Don't handle output when there is "device IO" op blocker, Fam Zheng, 2015/05/06
- Re: [Qemu-devel] [Qemu-block] [RFC PATCH 0/7] Fix transactional snapshot with virtio-blk dataplane, Stefan Hajnoczi, 2015/05/07