diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2018-08-13 16:43:20 +0200 |
|---|---|---|
| committer | Fam Zheng <famz@redhat.com> | 2018-08-15 10:12:35 +0800 |
| commit | 2f0d8947a664c77624fd3e22ce9449685b0ed808 (patch) | |
| tree | 89d6879f15dba182fb12d65d2a0eef32615cbfc3 /block | |
| parent | 9582f357bb6f6573c9a452743d8f3ab41ba2e3fa (diff) | |
nvme: simplify plug/unplug
bdrv_io_plug/bdrv_io_unplug take care of keeping a nesting count,
so change s->plugged to just a bool.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20180813144320.12382-2-pbonzini@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/nvme.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/block/nvme.c b/block/nvme.c index 37805e8890..781d77d6d2 100644 --- a/block/nvme.c +++ b/block/nvme.c @@ -104,7 +104,7 @@ typedef struct { uint64_t nsze; /* Namespace size reported by identify command */ int nsid; /* The namespace id to read/write data. */ uint64_t max_transfer; - int plugged; + bool plugged; CoMutex dma_map_lock; CoQueue dma_flush_queue; @@ -1101,7 +1101,8 @@ static void nvme_attach_aio_context(BlockDriverState *bs, static void nvme_aio_plug(BlockDriverState *bs) { BDRVNVMeState *s = bs->opaque; - s->plugged++; + assert(!s->plugged); + s->plugged = true; } static void nvme_aio_unplug(BlockDriverState *bs) @@ -1109,14 +1110,13 @@ static void nvme_aio_unplug(BlockDriverState *bs) int i; BDRVNVMeState *s = bs->opaque; assert(s->plugged); - if (!--s->plugged) { - for (i = 1; i < s->nr_queues; i++) { - NVMeQueuePair *q = s->queues[i]; - qemu_mutex_lock(&q->lock); - nvme_kick(s, q); - nvme_process_completion(s, q); - qemu_mutex_unlock(&q->lock); - } + s->plugged = false; + for (i = 1; i < s->nr_queues; i++) { + NVMeQueuePair *q = s->queues[i]; + qemu_mutex_lock(&q->lock); + nvme_kick(s, q); + nvme_process_completion(s, q); + qemu_mutex_unlock(&q->lock); } } |