commit 205ef7961f781496366e0a93a4ec621ad3724bd7
author Kevin Wolf <kwolf@redhat.com> Thu Oct 21 16:43:43 2010 +0200
committer Kevin Wolf <kwolf@redhat.com> Thu Nov 04 12:52:16 2010 +0100
tree 7c1861837185ba98074140dba8f03e65941c8c8c
parent 5dba48a882c126ccc86db6506cfa6dcca97badab

block: Allow bdrv_flush to return errors

This changes bdrv_flush to return 0 on success and -errno in case of failure.
It's a requirement for implementing proper error handle in users of bdrv_flush.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>

block.h

diff --git a/block.h b/block.h
index a4facf2..78ecfac 100644
--- a/block.h
+++ b/block.h
@@ -142,7 +142,7 @@
         BlockDriverCompletionFunc *cb, void *opaque);
 
 /* Ensure contents are flushed to disk.  */
-void bdrv_flush(BlockDriverState *bs);
+int bdrv_flush(BlockDriverState *bs);
 void bdrv_flush_all(void);
 void bdrv_close_all(void);