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[Qemu-devel] [RFC PATCH 02/10] block: add a function to set incoming liv
From: |
Benoît Canet |
Subject: |
[Qemu-devel] [RFC PATCH 02/10] block: add a function to set incoming live migration |
Date: |
Tue, 6 Mar 2012 18:32:21 +0100 |
This function will help to inform the block layer that an incoming
live migration is coming in order to make proper usage of the
BDRV_O_INCOMING flag.
Signed-off-by: Benoit Canet <address@hidden>
---
block.c | 8 ++++++++
block.h | 2 ++
2 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/block.c b/block.c
index 52ffe14..3e2260d 100644
--- a/block.c
+++ b/block.c
@@ -100,6 +100,8 @@ static BlockDriverState *bs_snapshots;
/* If non-zero, use only whitelisted block drivers */
static int use_bdrv_whitelist;
+static bool incoming_migration;
+
#ifdef _WIN32
static int is_windows_drive_prefix(const char *filename)
{
@@ -3580,6 +3582,12 @@ void bdrv_invalidate_cache_all(void)
}
}
+void bdrv_set_incoming_migration(void)
+{
+ assert(incoming_migration == false);
+ incoming_migration = true;
+}
+
int bdrv_flush(BlockDriverState *bs)
{
Coroutine *co;
diff --git a/block.h b/block.h
index e320d8f..23af1cc 100644
--- a/block.h
+++ b/block.h
@@ -223,6 +223,8 @@ BlockDriverAIOCB *bdrv_aio_ioctl(BlockDriverState *bs,
void bdrv_invalidate_cache(BlockDriverState *bs);
void bdrv_invalidate_cache_all(void);
+void bdrv_set_incoming_migration(void);
+
/* Ensure contents are flushed to disk. */
int bdrv_flush(BlockDriverState *bs);
int coroutine_fn bdrv_co_flush(BlockDriverState *bs);
--
1.7.7.6