Merge remote-tracking branch 'remotes/famz/tags/for-upstream' into staging

# gpg: Signature made Fri 28 Oct 2016 15:47:39 BST
# gpg:                using RSA key 0xCA35624C6A9171C6
# gpg: Good signature from "Fam Zheng <famz@redhat.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 5003 7CB7 9706 0F76 F021  AD56 CA35 624C 6A91 71C6

* remotes/famz/tags/for-upstream:
  aio: convert from RFifoLock to QemuRecMutex
  qemu-thread: introduce QemuRecMutex
  iothread: release AioContext around aio_poll
  block: only call aio_poll on the current thread's AioContext
  qemu-img: call aio_context_acquire/release around block job
  qemu-io: acquire AioContext
  block: prepare bdrv_reopen_multiple to release AioContext
  replication: pass BlockDriverState to reopen_backing_file
  iothread: detach all block devices before stopping them
  aio: introduce qemu_get_current_aio_context
  sheepdog: use BDRV_POLL_WHILE
  nfs: use BDRV_POLL_WHILE
  nfs: move nfs_set_events out of the while loops
  block: introduce BDRV_POLL_WHILE
  qed: Implement .bdrv_drain
  block: change drain to look only at one child at a time
  block: add BDS field to count in-flight requests
  mirror: use bdrv_drained_begin/bdrv_drained_end
  blockjob: introduce .drain callback for jobs
  replication: interrupt failover if the main device is closed

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/qemu-img.c b/qemu-img.c
index afcd51f..ac7f40d 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -795,6 +795,7 @@ static void run_block_job(BlockJob *job, Error **errp)
 {
     AioContext *aio_context = blk_get_aio_context(job->blk);
 
+    aio_context_acquire(aio_context);
     do {
         aio_poll(aio_context, true);
         qemu_progress_print(job->len ?
@@ -802,6 +803,7 @@ static void run_block_job(BlockJob *job, Error **errp)
     } while (!job->ready);
 
     block_job_complete_sync(job, errp);
+    aio_context_release(aio_context);
 
     /* A block job may finish instantaneously without publishing any progress,
      * so just signal completion here */
@@ -819,6 +821,7 @@ static int img_commit(int argc, char **argv)
     Error *local_err = NULL;
     CommonBlockJobCBInfo cbi;
     bool image_opts = false;
+    AioContext *aio_context;
 
     fmt = NULL;
     cache = BDRV_DEFAULT_CACHE;
@@ -928,8 +931,11 @@ static int img_commit(int argc, char **argv)
         .bs   = bs,
     };
 
+    aio_context = bdrv_get_aio_context(bs);
+    aio_context_acquire(aio_context);
     commit_active_start("commit", bs, base_bs, 0, BLOCKDEV_ON_ERROR_REPORT,
                         common_block_job_cb, &cbi, &local_err, false);
+    aio_context_release(aio_context);
     if (local_err) {
         goto done;
     }