diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2017-02-13 14:52:28 +0100 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2017-02-21 11:14:08 +0000 |
| commit | 0836c72f70143ba7d4277d89efc7643c526dd90a (patch) | |
| tree | 779c6f4b8ade1ff322568ad19413228374e10dba /util/async.c | |
| parent | b20123a28b18568cb6a40680e15821fdb171a8bf (diff) | |
| download | focaccia-qemu-0836c72f70143ba7d4277d89efc7643c526dd90a.tar.gz focaccia-qemu-0836c72f70143ba7d4277d89efc7643c526dd90a.zip | |
aio: push aio_context_acquire/release down to dispatching
The AioContext data structures are now protected by list_lock and/or they are walked with FOREACH_RCU primitives. There is no need anymore to acquire the AioContext for the entire duration of aio_dispatch. Instead, just acquire it before and after invoking the callbacks. The next step is then to push it further down. Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Message-id: 20170213135235.12274-12-pbonzini@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'util/async.c')
| -rw-r--r-- | util/async.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/util/async.c b/util/async.c index 9cac702c5b..aec8016d42 100644 --- a/util/async.c +++ b/util/async.c @@ -114,7 +114,9 @@ int aio_bh_poll(AioContext *ctx) ret = 1; } bh->idle = 0; + aio_context_acquire(ctx); aio_bh_call(bh); + aio_context_release(ctx); } if (bh->deleted) { deleted = true; |