block: remove AioContext locking

This is the big patch that removes
aio_context_acquire()/aio_context_release() from the block layer and
affected block layer users.

There isn't a clean way to split this patch and the reviewers are likely
the same group of people, so I decided to do it in one patch.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Paul Durrant <paul@xen.org>
Message-ID: <20231205182011.1976568-7-stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

1 files changed, 1 insertions, 9 deletions

diff --git a/qemu-io.c b/qemu-io.c
index 050c70835f..6cb1e00385 100644
--- a/qemu-io.c
+++ b/qemu-io.c
@@ -414,15 +414,7 @@ static void prep_fetchline(void *opaque)
 
 static int do_qemuio_command(const char *cmd)
 {
-    int ret;
-    AioContext *ctx =
-        qemuio_blk ? blk_get_aio_context(qemuio_blk) : qemu_get_aio_context();
-
-    aio_context_acquire(ctx);
-    ret = qemuio_command(qemuio_blk, cmd);
-    aio_context_release(ctx);
-
-    return ret;
+    return qemuio_command(qemuio_blk, cmd);
 }
 
 static int command_loop(void)