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block/vhdx: check error return of bdrv_flush() 

Reported-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Jeff Cody 2017-08-07 08:38:21 -04:00 committed by Kevin Wolf
parent 27539ac531
commit c6572fa0d2
1 changed files with 14 additions and 3 deletions
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17
block/vhdx-log.c
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@ -565,7 +565,10 @@ static int vhdx_log_flush(BlockDriverState *bs, BDRVVHDXState *s,
desc_entries = NULL;
}
bdrv_flush(bs);
ret = bdrv_flush(bs);
if (ret < 0) {
goto exit;
}
/* once the log is fully flushed, indicate that we have an empty log
* now. This also sets the log guid to 0, to indicate an empty log */
vhdx_log_reset(bs, s);
@ -1039,7 +1042,11 @@ int vhdx_log_write_and_flush(BlockDriverState *bs, BDRVVHDXState *s,
/* Make sure data written (new and/or changed blocks) is stable
* on disk, before creating log entry */
bdrv_flush(bs);
ret = bdrv_flush(bs);
if (ret < 0) {
goto exit;
}
ret = vhdx_log_write(bs, s, data, length, offset);
if (ret < 0) {
goto exit;
@ -1047,7 +1054,11 @@ int vhdx_log_write_and_flush(BlockDriverState *bs, BDRVVHDXState *s,
logs.log = s->log;
/* Make sure log is stable on disk */
bdrv_flush(bs);
ret = bdrv_flush(bs);
if (ret < 0) {
goto exit;
}
ret = vhdx_log_flush(bs, s, &logs);
if (ret < 0) {
goto exit;