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[Qemu-block] [PATCH for-4.1 0/2] block: bdrv_drained_end() changes fallo
From: |
Max Reitz |
Subject: |
[Qemu-block] [PATCH for-4.1 0/2] block: bdrv_drained_end() changes fallout |
Date: |
Mon, 22 Jul 2019 15:30:52 +0200 |
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
- [Qemu-block] [PATCH for-4.1 0/2] block: bdrv_drained_end() changes fallout,
Max Reitz <=
Re: [Qemu-block] [PATCH for-4.1 0/2] block: bdrv_drained_end() changes fallout, Max Reitz, 2019/07/22