| Message ID | 20181001102928.20533-9-vsementsov@virtuozzo.com |
|---|---|
| State | New |
| Headers | show |
| Series | fleecing-hook driver for backup | expand |
diff --git a/block/io.c b/block/io.c index b003b4d5bf..6d611bfe59 100644 --- a/block/io.c +++ b/block/io.c @@ -735,7 +735,8 @@ static bool coroutine_fn wait_serialising_requests(BdrvTrackedRequest *self) retry = false; qemu_co_mutex_lock(&bs->reqs_lock); QLIST_FOREACH(req, &bs->tracked_requests, list) { - if (req == self || (!req->serialising && !self->serialising)) { + if (req == self || (!req->serialising && !self->serialising) || + (self->type == BDRV_TRACKED_READ && req->type == self->type)) { continue; } if (tracked_request_overlaps(req, self->overlap_offset,
Otherwise, if we have serialized read-part in copy_range from backing file to its parent if CoW take place, this CoW's sub-reads will intersect with firstly created serialized read request. Anyway, reads should not influence on disk view, let's allow them to intersect. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> --- block/io.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)