From: Stefan Hajnoczi <stefa...@linux.vnet.ibm.com>
Several BlockDriverState fields are not being reinitialized across
bdrv_close()/bdrv_open(). Make sure they are reset to their default
values.
Signed-off-by: Stefan Hajnoczi <stefa...@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kw...@redhat.com>
(cherry picked from commit 03f541bd6eacdc6c2893f72b975257c89cab2b74)
Signed-off-by: Bruce Rogers <brog...@suse.com>
[AF: backported]
Signed-off-by: Andreas Färber <afaer...@suse.de>
---
block.c | 6 ++++--
1 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/block.c b/block.c
index 8d77746..1d6d26b 100644
--- a/block.c
+++ b/block.c
@@ -426,11 +426,14 @@ static int bdrv_open_common(BlockDriverState *bs, const
char *filename,
bs->total_sectors = 0;
bs->encrypted = 0;
bs->valid_key = 0;
+ bs->sg = 0;
bs->open_flags = flags;
+ bs->growable = 0;
/* buffer_alignment defaulted to 512, drivers can change this value */
bs->buffer_alignment = 512;
pstrcpy(bs->filename, sizeof(bs->filename), filename);
+ bs->backing_file[0] = '\0';
if (use_bdrv_whitelist && !bdrv_is_whitelisted(drv)) {
return -ENOTSUP;
@@ -439,8 +442,7 @@ static int bdrv_open_common(BlockDriverState *bs, const
char *filename,
bs->drv = drv;
bs->opaque = qemu_mallocz(drv->instance_size);
- if (flags & BDRV_O_CACHE_WB)
- bs->enable_write_cache = 1;
+ bs->enable_write_cache = !!(flags & BDRV_O_CACHE_WB);
/*
* Clear flags that are internal to the block layer before opening the
--
1.7.7
