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| author | Fam Zheng <famz@redhat.com> | 2015-12-01 17:36:28 +0800 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2015-12-03 11:08:07 +0800 |
| commit | 61408b250eaa6157e49fbdcfe21f2f53e50b9277 (patch) | |
| tree | 78f39e253a091ed8e5303f0c13fa89a0f231c60c /block/backup.c | |
| parent | d21e8776f6578be155714ae95c7d6c1bb03e8e34 (diff) | |
| download | qemu-61408b250eaa6157e49fbdcfe21f2f53e50b9277.tar.gz | |
block: Don't wait serialising for non-COR read requests
The assertion problem was noticed in 06c3916b35a, but it wasn't
completely fixed, because even though the req is not marked as
serialising, it still gets serialised by wait_serialising_requests
against other serialising requests, which could lead to the same
assertion failure.
Fix it by even more explicitly skipping the serialising for this
specific case.
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-id: 1448962590-2842-2-git-send-email-famz@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'block/backup.c')
| -rw-r--r-- | block/backup.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/block/backup.c b/block/backup.c index 3b39119256..705bb77661 100644 --- a/block/backup.c +++ b/block/backup.c @@ -132,7 +132,7 @@ static int coroutine_fn backup_do_cow(BlockDriverState *bs, qemu_iovec_init_external(&bounce_qiov, &iov, 1); if (is_write_notifier) { - ret = bdrv_co_no_copy_on_readv(bs, + ret = bdrv_co_readv_no_serialising(bs, start * BACKUP_SECTORS_PER_CLUSTER, n, &bounce_qiov); } else { |