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ut/bdev_ocssd: Clean up controller destruction

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Previously local boolean variable empty was used to destruct a
controller in delete_nvme_bdev_controller(). However, it was hard
to understand and did not work well with refactoring.

Using reference count is more sophisticated and works well, and hence
done in this patch.

Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Change-Id: I59d0552c16653495fa55e9bfe4a2c0a316a204c3
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/4355
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ziye Yang <ziye.yang@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Paul Luse <paul.e.luse@intel.com>
This commit is contained in:
Shuhei Matsumoto 2020-09-23 07:16:00 +09:00 committed by Tomasz Zawadzki
parent 01f769c62a
commit 0939c07505
1 changed files with 16 additions and 18 deletions
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32
test/unit/lib/bdev/bdev_ocssd.c/bdev_ocssd_ut.c
View File

@ -58,7 +58,6 @@ DEFINE_STUB(spdk_bdev_push_media_events, int, (struct spdk_bdev *bdev,
const struct spdk_bdev_media_event *events,
size_t num_events), 0);
DEFINE_STUB_V(spdk_bdev_notify_media_management, (struct spdk_bdev *bdev));
DEFINE_STUB_V(nvme_ctrlr_depopulate_namespace_done, (struct nvme_bdev_ctrlr *ctrlr));
DEFINE_STUB_V(spdk_bdev_module_finish_done, (void));
DEFINE_STUB(spdk_nvme_transport_id_trtype_str, const char *, (enum spdk_nvme_transport_type trtype),
NULL);
@ -194,6 +193,18 @@ nvme_ctrlr_populate_namespace_done(struct nvme_async_probe_ctx *ctx,
struct nvme_bdev_ns *ns, int rc)
{
CU_ASSERT_EQUAL(rc, 0);
ns->ctrlr->ref++;
}
void
nvme_ctrlr_depopulate_namespace_done(struct nvme_bdev_ctrlr *ctrlr)
{
CU_ASSERT(ctrlr->ref > 0);
ctrlr->ref--;
if (ctrlr->ref == 0 && ctrlr->destruct) {
nvme_bdev_ctrlr_destruct(ctrlr);
}
}
static struct nvme_bdev_ctrlr *
@ -221,7 +232,7 @@ create_nvme_bdev_controller(const struct spdk_nvme_transport_id *trid, const cha
nvme_bdev_ctrlr->ctrlr = ctrlr;
nvme_bdev_ctrlr->num_ns = ctrlr->ns_count;
nvme_bdev_ctrlr->ref = 0;
nvme_bdev_ctrlr->ref = 1;
nvme_bdev_ctrlr->connected_trid = &trid_entry->trid;
nvme_bdev_ctrlr->name = strdup(name);
for (nsid = 0; nsid < ctrlr->ns_count; ++nsid) {
@ -517,30 +528,17 @@ create_bdev(const char *ctrlr_name, const char *bdev_name, uint32_t nsid,
static void
delete_nvme_bdev_controller(struct nvme_bdev_ctrlr *nvme_bdev_ctrlr)
{
struct nvme_bdev *nvme_bdev, *tmp;
struct nvme_bdev_ns *nvme_ns;
bool empty = true;
uint32_t nsid;
nvme_bdev_ctrlr->destruct = true;
for (nsid = 0; nsid < nvme_bdev_ctrlr->num_ns; ++nsid) {
nvme_ns = nvme_bdev_ctrlr->namespaces[nsid];
if (!TAILQ_EMPTY(&nvme_ns->bdevs)) {
TAILQ_FOREACH_SAFE(nvme_bdev, &nvme_ns->bdevs, tailq, tmp) {
spdk_bdev_unregister(&nvme_bdev->disk, NULL, NULL);
}
empty = false;
}
bdev_ocssd_depopulate_namespace(nvme_bdev_ctrlr->namespaces[nsid]);
}
if (empty) {
CU_ASSERT(nvme_bdev_ctrlr->ref == 1);
nvme_bdev_ctrlr->ref--;
nvme_bdev_ctrlr_destruct(nvme_bdev_ctrlr);
}
while (spdk_thread_poll(g_thread, 0, 0) > 0) {}