diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2017-06-05 14:38:53 +0200 |
|---|---|---|
| committer | Fam Zheng <famz@redhat.com> | 2017-06-16 07:55:00 +0800 |
| commit | 20fc71b25cfd8102b7f12a2b44133894ad90040a (patch) | |
| tree | 36a79378952602ef7389104a0d07c6b07189d211 /block/io.c | |
| parent | d993b85804b7ec099d4e1d377161ac8af398d855 (diff) | |
| download | qemu-20fc71b25cfd8102b7f12a2b44133894ad90040a.tar.gz | |
block: access serialising_in_flight with atomic ops
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20170605123908.18777-5-pbonzini@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Diffstat (limited to 'block/io.c')
| -rw-r--r-- | block/io.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/block/io.c b/block/io.c index 70643df494..d76202b452 100644 --- a/block/io.c +++ b/block/io.c @@ -375,7 +375,7 @@ void bdrv_drain_all(void) static void tracked_request_end(BdrvTrackedRequest *req) { if (req->serialising) { - req->bs->serialising_in_flight--; + atomic_dec(&req->bs->serialising_in_flight); } QLIST_REMOVE(req, list); @@ -414,7 +414,7 @@ static void mark_request_serialising(BdrvTrackedRequest *req, uint64_t align) - overlap_offset; if (!req->serialising) { - req->bs->serialising_in_flight++; + atomic_inc(&req->bs->serialising_in_flight); req->serialising = true; } @@ -519,7 +519,7 @@ static bool coroutine_fn wait_serialising_requests(BdrvTrackedRequest *self) bool retry; bool waited = false; - if (!bs->serialising_in_flight) { + if (!atomic_read(&bs->serialising_in_flight)) { return false; } |