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blockdev: acquire AioContext in do_qmp_query_block_jobs_one()

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Make sure that query-block-jobs acquires the BlockDriverState
AioContext so that the blockjob isn't running in another thread while we
access its state.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-id: 1413889440-32577-3-git-send-email-stefanha@redhat.com
This commit is contained in:
Stefan Hajnoczi 2014-10-21 12:03:51 +01:00
parent 3d948cdf37
commit 69691e7270
1 changed files with 6 additions and 0 deletions
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6
blockdev.c
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@ -2628,12 +2628,18 @@ BlockJobInfoList *qmp_query_block_jobs(Error **errp)
BlockDriverState *bs;
for (bs = bdrv_next(NULL); bs; bs = bdrv_next(bs)) {
AioContext *aio_context = bdrv_get_aio_context(bs);
aio_context_acquire(aio_context);
if (bs->job) {
BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1);
elem->value = block_job_query(bs->job);
*p_next = elem;
p_next = &elem->next;
}
aio_context_release(aio_context);
}
return head;