[PATCH] block/nvme: use AIO_WAIT_WHILE_UNLOCKED()

[Stefan Hajnoczi <stefanha@redhat.com>]

A few Admin Queue commands are submitted during nvme_file_open(). They
are synchronous since device initialization cannot continue until the
commands complete.

AIO_WAIT_WHILE() is currently used, but the block/nvme.c code actually
doesn't rely on the AioContext lock. Replace it with
AIO_WAIT_WHILE_UNLOCKED(NULL, condition). There is no change in behavior
and the dependency on the AioContext lock is eliminated.

This is a step towards removing the AioContext lock.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 block/nvme.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/block/nvme.c b/block/nvme.c
index 5b744c2bda..829b9c04db 100644
--- a/block/nvme.c
+++ b/block/nvme.c
@@ -512,7 +512,6 @@ static int nvme_admin_cmd_sync(BlockDriverState *bs, NvmeCmd *cmd)
 {
     BDRVNVMeState *s = bs->opaque;
     NVMeQueuePair *q = s->queues[INDEX_ADMIN];
-    AioContext *aio_context = bdrv_get_aio_context(bs);
     NVMeRequest *req;
     int ret = -EINPROGRESS;
     req = nvme_get_free_req_nowait(q);
@@ -521,7 +520,7 @@ static int nvme_admin_cmd_sync(BlockDriverState *bs, NvmeCmd *cmd)
     }
     nvme_submit_command(q, req, cmd, nvme_admin_cmd_sync_cb, &ret);
 
-    AIO_WAIT_WHILE(aio_context, ret == -EINPROGRESS);
+    AIO_WAIT_WHILE_UNLOCKED(NULL, ret == -EINPROGRESS);
     return ret;
 }
 
-- 
2.39.2