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| author | Kevin Wolf <kwolf@redhat.com> | 2017-12-15 09:33:21 +0100 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2017-12-22 15:05:31 +0100 |
| commit | 9a7e86c8048cecededa665b1ca55c7f217ed358c (patch) | |
| tree | 2ee1eeb67e6db5a04562aebd9f9302b06c512e92 /block/io.c | |
| parent | 8e77e0bceb4de0fe5cc912d5865b28a703f0f041 (diff) | |
| download | qemu-9a7e86c8048cecededa665b1ca55c7f217ed358c.tar.gz | |
block: Assert drain_all is only called from main AioContext
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Diffstat (limited to 'block/io.c')
| -rw-r--r-- | block/io.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/block/io.c b/block/io.c index cf780c3cb0..b94740b8ff 100644 --- a/block/io.c +++ b/block/io.c @@ -330,6 +330,12 @@ void bdrv_drain_all_begin(void) BdrvNextIterator it; GSList *aio_ctxs = NULL, *ctx; + /* BDRV_POLL_WHILE() for a node can only be called from its own I/O thread + * or the main loop AioContext. We potentially use BDRV_POLL_WHILE() on + * nodes in several different AioContexts, so make sure we're in the main + * context. */ + assert(qemu_get_current_aio_context() == qemu_get_aio_context()); + block_job_pause_all(); for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) { |