[Qemu-devel] [PATCH for-4.1 0/2] block: bdrv_drained_end() changes fallout

[Max Reitz <mreitz@redhat.com>]

Hi,

I noted that test-bdrv-drain sometimgs hangs (very rarely, though), and
tried to write a test that triggers the issue.  I failed to do so (there
is a good reason for that, see patch 1), but on my way I noticed that
calling bdrv_set_aio_context_ignore() from any AioContext but the main
one is a bad idea.  Hence patch 2.

Anyway, I found the problem, which is fixed by patch 1 -- I think it’s
rather obvious.  There is no dedicated test because I don’t think it’s
possible to write one, as I explain there.


Max Reitz (2):
  block: Dec. drained_end_counter before bdrv_wakeup
  block: Only the main loop can change AioContexts

 include/block/block.h |  8 +++-----
 block.c               | 13 ++++++++-----
 block/io.c            |  5 ++---
 3 files changed, 13 insertions(+), 13 deletions(-)

-- 
2.21.0