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Diffstat (limited to 'drivers/block/rbd.c')
-rw-r--r--drivers/block/rbd.c72
1 files changed, 41 insertions, 31 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 5d684d97dc6d..2f7358726737 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -520,6 +520,7 @@ void rbd_warn(struct rbd_device *rbd_dev, const char *fmt, ...)
# define rbd_assert(expr) ((void) 0)
#endif /* !RBD_DEBUG */
+static void rbd_osd_copyup_callback(struct rbd_obj_request *obj_request);
static int rbd_img_obj_request_submit(struct rbd_obj_request *obj_request);
static void rbd_img_parent_read(struct rbd_obj_request *obj_request);
static void rbd_dev_remove_parent(struct rbd_device *rbd_dev);
@@ -1795,6 +1796,16 @@ static void rbd_osd_stat_callback(struct rbd_obj_request *obj_request)
obj_request_done_set(obj_request);
}
+static void rbd_osd_call_callback(struct rbd_obj_request *obj_request)
+{
+ dout("%s: obj %p\n", __func__, obj_request);
+
+ if (obj_request_img_data_test(obj_request))
+ rbd_osd_copyup_callback(obj_request);
+ else
+ obj_request_done_set(obj_request);
+}
+
static void rbd_osd_req_callback(struct ceph_osd_request *osd_req,
struct ceph_msg *msg)
{
@@ -1842,6 +1853,8 @@ static void rbd_osd_req_callback(struct ceph_osd_request *osd_req,
rbd_osd_discard_callback(obj_request);
break;
case CEPH_OSD_OP_CALL:
+ rbd_osd_call_callback(obj_request);
+ break;
case CEPH_OSD_OP_NOTIFY_ACK:
case CEPH_OSD_OP_WATCH:
rbd_osd_trivial_callback(obj_request);
@@ -1916,7 +1929,7 @@ static struct ceph_osd_request *rbd_osd_req_create(
osdc = &rbd_dev->rbd_client->client->osdc;
osd_req = ceph_osdc_alloc_request(osdc, snapc, num_ops, false,
- GFP_ATOMIC);
+ GFP_NOIO);
if (!osd_req)
return NULL; /* ENOMEM */
@@ -1965,7 +1978,7 @@ rbd_osd_req_create_copyup(struct rbd_obj_request *obj_request)
rbd_dev = img_request->rbd_dev;
osdc = &rbd_dev->rbd_client->client->osdc;
osd_req = ceph_osdc_alloc_request(osdc, snapc, num_osd_ops,
- false, GFP_ATOMIC);
+ false, GFP_NOIO);
if (!osd_req)
return NULL; /* ENOMEM */
@@ -1998,11 +2011,11 @@ static struct rbd_obj_request *rbd_obj_request_create(const char *object_name,
rbd_assert(obj_request_type_valid(type));
size = strlen(object_name) + 1;
- name = kmalloc(size, GFP_KERNEL);
+ name = kmalloc(size, GFP_NOIO);
if (!name)
return NULL;
- obj_request = kmem_cache_zalloc(rbd_obj_request_cache, GFP_KERNEL);
+ obj_request = kmem_cache_zalloc(rbd_obj_request_cache, GFP_NOIO);
if (!obj_request) {
kfree(name);
return NULL;
@@ -2457,7 +2470,7 @@ static int rbd_img_request_fill(struct rbd_img_request *img_request,
bio_chain_clone_range(&bio_list,
&bio_offset,
clone_size,
- GFP_ATOMIC);
+ GFP_NOIO);
if (!obj_request->bio_list)
goto out_unwind;
} else if (type == OBJ_REQUEST_PAGES) {
@@ -2499,13 +2512,15 @@ out_unwind:
}
static void
-rbd_img_obj_copyup_callback(struct rbd_obj_request *obj_request)
+rbd_osd_copyup_callback(struct rbd_obj_request *obj_request)
{
struct rbd_img_request *img_request;
struct rbd_device *rbd_dev;
struct page **pages;
u32 page_count;
+ dout("%s: obj %p\n", __func__, obj_request);
+
rbd_assert(obj_request->type == OBJ_REQUEST_BIO ||
obj_request->type == OBJ_REQUEST_NODATA);
rbd_assert(obj_request_img_data_test(obj_request));
@@ -2532,9 +2547,7 @@ rbd_img_obj_copyup_callback(struct rbd_obj_request *obj_request)
if (!obj_request->result)
obj_request->xferred = obj_request->length;
- /* Finish up with the normal image object callback */
-
- rbd_img_obj_callback(obj_request);
+ obj_request_done_set(obj_request);
}
static void
@@ -2619,7 +2632,6 @@ rbd_img_obj_parent_read_full_callback(struct rbd_img_request *img_request)
/* All set, send it off. */
- orig_request->callback = rbd_img_obj_copyup_callback;
osdc = &rbd_dev->rbd_client->client->osdc;
img_result = rbd_obj_request_submit(osdc, orig_request);
if (!img_result)
@@ -3382,6 +3394,7 @@ static void rbd_handle_request(struct rbd_device *rbd_dev, struct request *rq)
goto err_rq;
}
img_request->rq = rq;
+ snapc = NULL; /* img_request consumes a ref */
if (op_type == OBJ_OP_DISCARD)
result = rbd_img_request_fill(img_request, OBJ_REQUEST_NODATA,
@@ -3768,6 +3781,9 @@ static int rbd_init_disk(struct rbd_device *rbd_dev)
q->limits.discard_zeroes_data = 1;
blk_queue_merge_bvec(q, rbd_merge_bvec);
+ if (!ceph_test_opt(rbd_dev->rbd_client->client, NOCRC))
+ q->backing_dev_info.capabilities |= BDI_CAP_STABLE_WRITES;
+
disk->queue = q;
q->queuedata = rbd_dev;
@@ -5157,42 +5173,36 @@ out_err:
static int rbd_dev_probe_parent(struct rbd_device *rbd_dev)
{
struct rbd_device *parent = NULL;
- struct rbd_spec *parent_spec;
- struct rbd_client *rbdc;
int ret;
if (!rbd_dev->parent_spec)
return 0;
- /*
- * We need to pass a reference to the client and the parent
- * spec when creating the parent rbd_dev. Images related by
- * parent/child relationships always share both.
- */
- parent_spec = rbd_spec_get(rbd_dev->parent_spec);
- rbdc = __rbd_get_client(rbd_dev->rbd_client);
- ret = -ENOMEM;
- parent = rbd_dev_create(rbdc, parent_spec);
- if (!parent)
+ parent = rbd_dev_create(rbd_dev->rbd_client, rbd_dev->parent_spec);
+ if (!parent) {
+ ret = -ENOMEM;
goto out_err;
+ }
+
+ /*
+ * Images related by parent/child relationships always share
+ * rbd_client and spec/parent_spec, so bump their refcounts.
+ */
+ __rbd_get_client(rbd_dev->rbd_client);
+ rbd_spec_get(rbd_dev->parent_spec);
ret = rbd_dev_image_probe(parent, false);
if (ret < 0)
goto out_err;
+
rbd_dev->parent = parent;
atomic_set(&rbd_dev->parent_ref, 1);
-
return 0;
+
out_err:
- if (parent) {
- rbd_dev_unparent(rbd_dev);
- kfree(rbd_dev->header_name);
+ rbd_dev_unparent(rbd_dev);
+ if (parent)
rbd_dev_destroy(parent);
- } else {
- rbd_put_client(rbdc);
- rbd_spec_put(parent_spec);
- }
-
return ret;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-16 04:07:32 +0000