diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2017-06-05 14:38:54 +0200 |
|---|---|---|
| committer | Fam Zheng <famz@redhat.com> | 2017-06-16 07:55:00 +0800 |
| commit | e2a6ae7fe57c17199624e4d47826ec46ca57d546 (patch) | |
| tree | 081efb61697d284b83fdf40c31195c8da0ac425e /block/nfs.c | |
| parent | 20fc71b25cfd8102b7f12a2b44133894ad90040a (diff) | |
block: access wakeup with atomic ops
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20170605123908.18777-6-pbonzini@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Diffstat (limited to 'block/nfs.c')
| -rw-r--r-- | block/nfs.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/block/nfs.c b/block/nfs.c index 848b2c0bb0..18c87d2f25 100644 --- a/block/nfs.c +++ b/block/nfs.c @@ -730,7 +730,9 @@ nfs_get_allocated_file_size_cb(int ret, struct nfs_context *nfs, void *data, if (task->ret < 0) { error_report("NFS Error: %s", nfs_get_error(nfs)); } - task->complete = 1; + + /* Set task->complete before reading bs->wakeup. */ + atomic_mb_set(&task->complete, 1); bdrv_wakeup(task->bs); } |