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block: Avoid bs->blk in bdrv_next()

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We need to introduce a separate BdrvNextIterator struct that can keep
more state than just the current BDS in order to avoid using the bs->blk
pointer.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Kevin Wolf 2016-03-22 18:58:50 +01:00
parent dde33812a8
commit 7c8eece45b
10 changed files with 103 additions and 76 deletions
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5
qmp.c
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@ -181,6 +181,7 @@ void qmp_cont(Error **errp)
Error *local_err = NULL;
BlockBackend *blk;
BlockDriverState *bs;
BdrvNextIterator *it;
/* if there is a dump in background, we should wait until the dump
* finished */
@ -199,7 +200,9 @@ void qmp_cont(Error **errp)
for (blk = blk_next(NULL); blk; blk = blk_next(blk)) {
blk_iostatus_reset(blk);
}
for (bs = bdrv_next(NULL); bs; bs = bdrv_next(bs)) {
it = NULL;
while ((it = bdrv_next(it, &bs))) {
bdrv_add_key(bs, NULL, &local_err);
if (local_err) {
error_propagate(errp, local_err);