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authoraliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162>2008-10-06 13:55:43 +0000
committeraliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162>2008-10-06 13:55:43 +0000
commitc6ca28d636cdc24574aa1822f5f424de5dc89758 (patch)
tree63059bc72be77c115c4a3e97165d8153c2d088f3 /block.c
parentd8f4460989d6d6749ff649f1c5439de38c2dfeab (diff)
Add bdrv_flush_all()
This patch adds a bdrv_flush_all() function. It's necessary to ensure that all IO operations have been flushed to disk before completely a live migration. N.B. we don't actually use this now. We really should flush the block drivers using an live savevm callback to avoid unnecessary guest down time. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5432 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'block.c')
-rw-r--r--block.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/block.c b/block.c
index 27b39d65d8..3eb4526164 100644
--- a/block.c
+++ b/block.c
@@ -895,6 +895,16 @@ void bdrv_flush(BlockDriverState *bs)
bdrv_flush(bs->backing_hd);
}
+void bdrv_flush_all(void)
+{
+ BlockDriverState *bs;
+
+ for (bs = bdrv_first; bs != NULL; bs = bs->next)
+ if (bs->drv && !bdrv_is_read_only(bs) &&
+ (!bdrv_is_removable(bs) || bdrv_is_inserted(bs)))
+ bdrv_flush(bs);
+}
+
/*
* Returns true iff the specified sector is present in the disk image. Drivers
* not implementing the functionality are assumed to not support backing files,