debian/patches/pve/0042-qmp_snapshot_drive-add-aiocontext.patch

   1 From 4fb6191acb1fdff8170a26ba9acd835c9eaf8218 Mon Sep 17 00:00:00 2001
   2 From: Alexandre Derumier <aderumier@odiso.com>
   3 Date: Tue, 13 Sep 2016 01:57:56 +0200
   4 Subject: [PATCH 42/47] qmp_snapshot_drive: add aiocontext
   5
   6 Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
   7 ---
   8  savevm-async.c | 15 +++++++++++----
   9  1 file changed, 11 insertions(+), 4 deletions(-)
  10
  11 diff --git a/savevm-async.c b/savevm-async.c
  12 index 2f4766c..5913a90 100644
  13 --- a/savevm-async.c
  14 +++ b/savevm-async.c
  15 @@ -345,6 +345,7 @@ void qmp_snapshot_drive(const char *device, const char *name, Error **errp)
  16      BlockBackend *blk;
  17      BlockDriverState *bs;
  18      QEMUSnapshotInfo sn1, *sn = &sn1;
  19 +    AioContext *aio_context;
  20      int ret;
  21  #ifdef _WIN32
  22      struct _timeb tb;
  23 @@ -371,20 +372,23 @@ void qmp_snapshot_drive(const char *device, const char *name, Error **errp)
  24          return;
  25      }
  26
  27 +    aio_context = bdrv_get_aio_context(bs);
  28 +    aio_context_acquire(aio_context);
  29 +
  30      if (bdrv_is_read_only(bs)) {
  31          error_setg(errp, "Node '%s' is read only", device);
  32 -        return;
  33 +        goto out;
  34      }
  35
  36      if (!bdrv_can_snapshot(bs)) {
  37          error_setg(errp, QERR_UNSUPPORTED);
  38 -        return;
  39 +        goto out;
  40      }
  41
  42      if (bdrv_snapshot_find(bs, sn, name) >= 0) {
  43          error_set(errp, ERROR_CLASS_GENERIC_ERROR,
  44                    "snapshot '%s' already exists", name);
  45 -        return;
  46 +        goto out;
  47      }
  48
  49      sn = &sn1;
  50 @@ -409,8 +413,11 @@ void qmp_snapshot_drive(const char *device, const char *name, Error **errp)
  51      if (ret < 0) {
  52          error_set(errp, ERROR_CLASS_GENERIC_ERROR,
  53                    "Error while creating snapshot on '%s'\n", device);
  54 -        return;
  55 +        goto out;
  56      }
  57 +
  58 +out:
  59 +    aio_context_release(aio_context);
  60  }
  61
  62  void qmp_delete_drive_snapshot(const char *device, const char *name,
  63 --
  64 2.1.4
  65