diff options
Diffstat (limited to 'hw/block')
| -rw-r--r-- | hw/block/dataplane/xen-block.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/hw/block/dataplane/xen-block.c b/hw/block/dataplane/xen-block.c index aadca75..0f200c5 100644 --- a/hw/block/dataplane/xen-block.c +++ b/hw/block/dataplane/xen-block.c @@ -318,7 +318,9 @@ static void xen_block_complete_aio(void *opaque, int ret) } xen_block_release_request(request); - qemu_bh_schedule(dataplane->bh); + if (dataplane->more_work) { + qemu_bh_schedule(dataplane->bh); + } done: aio_context_release(dataplane->ctx); @@ -515,12 +517,13 @@ static int xen_block_get_request(XenBlockDataPlane *dataplane, */ #define IO_PLUG_THRESHOLD 1 -static void xen_block_handle_requests(XenBlockDataPlane *dataplane) +static bool xen_block_handle_requests(XenBlockDataPlane *dataplane) { RING_IDX rc, rp; XenBlockRequest *request; int inflight_atstart = dataplane->requests_inflight; int batched = 0; + bool done_something = false; dataplane->more_work = 0; @@ -552,6 +555,7 @@ static void xen_block_handle_requests(XenBlockDataPlane *dataplane) } xen_block_get_request(dataplane, request, rc); dataplane->rings.common.req_cons = ++rc; + done_something = true; /* parse them */ if (xen_block_parse_request(request) != 0) { @@ -603,10 +607,7 @@ static void xen_block_handle_requests(XenBlockDataPlane *dataplane) blk_io_unplug(dataplane->blk); } - if (dataplane->more_work && - dataplane->requests_inflight < dataplane->max_requests) { - qemu_bh_schedule(dataplane->bh); - } + return done_something; } static void xen_block_dataplane_bh(void *opaque) @@ -618,11 +619,11 @@ static void xen_block_dataplane_bh(void *opaque) aio_context_release(dataplane->ctx); } -static void xen_block_dataplane_event(void *opaque) +static bool xen_block_dataplane_event(void *opaque) { XenBlockDataPlane *dataplane = opaque; - qemu_bh_schedule(dataplane->bh); + return xen_block_handle_requests(dataplane); } XenBlockDataPlane *xen_block_dataplane_create(XenDevice *xendev, |