debian/patches/pve/0020-backup-vma-run-flush-inside-coroutine.patch

   1 From c0b66c21bb4d4cc1f02d4259d62dd8d6d413fd7f Mon Sep 17 00:00:00 2001
   2 From: Wolfgang Bumiller <w.bumiller@proxmox.com>
   3 Date: Wed, 9 Dec 2015 15:40:42 +0100
   4 Subject: [PATCH 20/47] backup: vma: run flush inside coroutine
   5
   6 ---
   7  blockdev.c   | 10 +++++++++-
   8  vma-writer.c |  4 ++++
   9  2 files changed, 13 insertions(+), 1 deletion(-)
  10
  11 diff --git a/blockdev.c b/blockdev.c
  12 index ef159b0..a9a900e 100644
  13 --- a/blockdev.c
  14 +++ b/blockdev.c
  15 @@ -3087,6 +3087,13 @@ static void pvebackup_cleanup(void)
  16      }
  17  }
  18
  19 +static void coroutine_fn backup_close_vma_stream(void *opaque)
  20 +{
  21 +    PVEBackupDevInfo *di = opaque;
  22 +
  23 +    vma_writer_close_stream(backup_state.vmaw, di->dev_id);
  24 +}
  25 +
  26  static void pvebackup_complete_cb(void *opaque, int ret)
  27  {
  28      PVEBackupDevInfo *di = opaque;
  29 @@ -3104,7 +3111,8 @@ static void pvebackup_complete_cb(void *opaque, int ret)
  30      di->target = NULL;
  31
  32      if (backup_state.vmaw) {
  33 -        vma_writer_close_stream(backup_state.vmaw, di->dev_id);
  34 +        Coroutine *co = qemu_coroutine_create(backup_close_vma_stream, di);
  35 +        qemu_coroutine_enter(co);
  36      }
  37
  38      block_job_cb(bs, ret);
  39 diff --git a/vma-writer.c b/vma-writer.c
  40 index ec8da53..216577a 100644
  41 --- a/vma-writer.c
  42 +++ b/vma-writer.c
  43 @@ -700,6 +700,10 @@ int vma_writer_close(VmaWriter *vmaw, Error **errp)
  44
  45      int i;
  46
  47 +    while (vmaw->co_writer) {
  48 +        aio_poll(qemu_get_aio_context(), true);
  49 +    }
  50 +
  51      assert(vmaw->co_writer == NULL);
  52
  53      if (vmaw->cmd) {
  54 --
  55 2.1.4
  56