Linux-libre 4.2-gnu

1 files changed, 67 insertions, 40 deletions

diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 010ce0b1f..bc67a93aa 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -346,6 +346,7 @@ struct rbd_device {
 	struct rbd_image_header	header;
 	unsigned long		flags;		/* possibly lock protected */
 	struct rbd_spec		*spec;
+	struct rbd_options	*opts;
 
 	char			*header_name;
 
@@ -725,34 +726,36 @@ static struct rbd_client *rbd_client_find(struct ceph_options *ceph_opts)
 }
 
 /*
- * mount options
+ * (Per device) rbd map options
  */
 enum {
+	Opt_queue_depth,
 	Opt_last_int,
 	/* int args above */
 	Opt_last_string,
 	/* string args above */
 	Opt_read_only,
 	Opt_read_write,
-	/* Boolean args above */
-	Opt_last_bool,
+	Opt_err
 };
 
 static match_table_t rbd_opts_tokens = {
+	{Opt_queue_depth, "queue_depth=%d"},
 	/* int args above */
 	/* string args above */
 	{Opt_read_only, "read_only"},
 	{Opt_read_only, "ro"},		/* Alternate spelling */
 	{Opt_read_write, "read_write"},
 	{Opt_read_write, "rw"},		/* Alternate spelling */
-	/* Boolean args above */
-	{-1, NULL}
+	{Opt_err, NULL}
 };
 
 struct rbd_options {
+	int	queue_depth;
 	bool	read_only;
 };
 
+#define RBD_QUEUE_DEPTH_DEFAULT	BLKDEV_MAX_RQ
 #define RBD_READ_ONLY_DEFAULT	false
 
 static int parse_rbd_opts_token(char *c, void *private)
@@ -762,27 +765,27 @@ static int parse_rbd_opts_token(char *c, void *private)
 	int token, intval, ret;
 
 	token = match_token(c, rbd_opts_tokens, argstr);
-	if (token < 0)
-		return -EINVAL;
-
 	if (token < Opt_last_int) {
 		ret = match_int(&argstr[0], &intval);
 		if (ret < 0) {
-			pr_err("bad mount option arg (not int) "
-			       "at '%s'\n", c);
+			pr_err("bad mount option arg (not int) at '%s'\n", c);
 			return ret;
 		}
 		dout("got int token %d val %d\n", token, intval);
 	} else if (token > Opt_last_int && token < Opt_last_string) {
-		dout("got string token %d val %s\n", token,
-		     argstr[0].from);
-	} else if (token > Opt_last_string && token < Opt_last_bool) {
-		dout("got Boolean token %d\n", token);
+		dout("got string token %d val %s\n", token, argstr[0].from);
 	} else {
 		dout("got token %d\n", token);
 	}
 
 	switch (token) {
+	case Opt_queue_depth:
+		if (intval < 1) {
+			pr_err("queue_depth out of range\n");
+			return -EINVAL;
+		}
+		rbd_opts->queue_depth = intval;
+		break;
 	case Opt_read_only:
 		rbd_opts->read_only = true;
 		break;
@@ -790,9 +793,10 @@ static int parse_rbd_opts_token(char *c, void *private)
 		rbd_opts->read_only = false;
 		break;
 	default:
-		rbd_assert(false);
-		break;
+		/* libceph prints "bad option" msg */
+		return -EINVAL;
 	}
+
 	return 0;
 }
 
@@ -1564,22 +1568,39 @@ static void rbd_obj_request_end(struct rbd_obj_request *obj_request)
 /*
  * Wait for an object request to complete.  If interrupted, cancel the
  * underlying osd request.
+ *
+ * @timeout: in jiffies, 0 means "wait forever"
  */
-static int rbd_obj_request_wait(struct rbd_obj_request *obj_request)
+static int __rbd_obj_request_wait(struct rbd_obj_request *obj_request,
+				  unsigned long timeout)
 {
-	int ret;
+	long ret;
 
 	dout("%s %p\n", __func__, obj_request);
-
-	ret = wait_for_completion_interruptible(&obj_request->completion);
-	if (ret < 0) {
-		dout("%s %p interrupted\n", __func__, obj_request);
+	ret = wait_for_completion_interruptible_timeout(
+					&obj_request->completion,
+					ceph_timeout_jiffies(timeout));
+	if (ret <= 0) {
+		if (ret == 0)
+			ret = -ETIMEDOUT;
 		rbd_obj_request_end(obj_request);
-		return ret;
+	} else {
+		ret = 0;
 	}
 
-	dout("%s %p done\n", __func__, obj_request);
-	return 0;
+	dout("%s %p ret %d\n", __func__, obj_request, (int)ret);
+	return ret;
+}
+
+static int rbd_obj_request_wait(struct rbd_obj_request *obj_request)
+{
+	return __rbd_obj_request_wait(obj_request, 0);
+}
+
+static int rbd_obj_request_wait_timeout(struct rbd_obj_request *obj_request,
+					unsigned long timeout)
+{
+	return __rbd_obj_request_wait(obj_request, timeout);
 }
 
 static void rbd_img_request_complete(struct rbd_img_request *img_request)
@@ -2389,7 +2410,7 @@ static void rbd_img_obj_request_fill(struct rbd_obj_request *obj_request,
 	}
 
 	if (opcode == CEPH_OSD_OP_DELETE)
-		osd_req_op_init(osd_request, num_ops, opcode);
+		osd_req_op_init(osd_request, num_ops, opcode, 0);
 	else
 		osd_req_op_extent_init(osd_request, num_ops, opcode,
 				       offset, length, 0, 0);
@@ -2860,7 +2881,7 @@ static int rbd_img_obj_exists_submit(struct rbd_obj_request *obj_request)
 		goto out;
 	stat_request->callback = rbd_img_obj_exists_callback;
 
-	osd_req_op_init(stat_request->osd_req, 0, CEPH_OSD_OP_STAT);
+	osd_req_op_init(stat_request->osd_req, 0, CEPH_OSD_OP_STAT, 0);
 	osd_req_op_raw_data_in_pages(stat_request->osd_req, 0, pages, size, 0,
 					false, false);
 	rbd_osd_req_format_read(stat_request);
@@ -3134,6 +3155,7 @@ static struct rbd_obj_request *rbd_obj_watch_request_helper(
 						bool watch)
 {
 	struct ceph_osd_client *osdc = &rbd_dev->rbd_client->client->osdc;
+	struct ceph_options *opts = osdc->client->options;
 	struct rbd_obj_request *obj_request;
 	int ret;
 
@@ -3160,7 +3182,7 @@ static struct rbd_obj_request *rbd_obj_watch_request_helper(
 	if (ret)
 		goto out;
 
-	ret = rbd_obj_request_wait(obj_request);
+	ret = rbd_obj_request_wait_timeout(obj_request, opts->mount_timeout);
 	if (ret)
 		goto out;
 
@@ -3762,10 +3784,9 @@ static int rbd_init_disk(struct rbd_device *rbd_dev)
 
 	memset(&rbd_dev->tag_set, 0, sizeof(rbd_dev->tag_set));
 	rbd_dev->tag_set.ops = &rbd_mq_ops;
-	rbd_dev->tag_set.queue_depth = BLKDEV_MAX_RQ;
+	rbd_dev->tag_set.queue_depth = rbd_dev->opts->queue_depth;
 	rbd_dev->tag_set.numa_node = NUMA_NO_NODE;
-	rbd_dev->tag_set.flags =
-		BLK_MQ_F_SHOULD_MERGE | BLK_MQ_F_SG_MERGE;
+	rbd_dev->tag_set.flags = BLK_MQ_F_SHOULD_MERGE | BLK_MQ_F_SG_MERGE;
 	rbd_dev->tag_set.nr_hw_queues = 1;
 	rbd_dev->tag_set.cmd_size = sizeof(struct work_struct);
 
@@ -3785,6 +3806,7 @@ static int rbd_init_disk(struct rbd_device *rbd_dev)
 	/* set io sizes to object size */
 	segment_size = rbd_obj_bytes(&rbd_dev->header);
 	blk_queue_max_hw_sectors(q, segment_size / SECTOR_SIZE);
+	blk_queue_max_segments(q, segment_size / SECTOR_SIZE);
 	blk_queue_max_segment_size(q, segment_size);
 	blk_queue_io_min(q, segment_size);
 	blk_queue_io_opt(q, segment_size);
@@ -4056,7 +4078,8 @@ static void rbd_spec_free(struct kref *kref)
 }
 
 static struct rbd_device *rbd_dev_create(struct rbd_client *rbdc,
-				struct rbd_spec *spec)
+					 struct rbd_spec *spec,
+					 struct rbd_options *opts)
 {
 	struct rbd_device *rbd_dev;
 
@@ -4070,8 +4093,9 @@ static struct rbd_device *rbd_dev_create(struct rbd_client *rbdc,
 	INIT_LIST_HEAD(&rbd_dev->node);
 	init_rwsem(&rbd_dev->header_rwsem);
 
-	rbd_dev->spec = spec;
 	rbd_dev->rbd_client = rbdc;
+	rbd_dev->spec = spec;
+	rbd_dev->opts = opts;
 
 	/* Initialize the layout used for all rbd requests */
 
@@ -4087,6 +4111,7 @@ static void rbd_dev_destroy(struct rbd_device *rbd_dev)
 {
 	rbd_put_client(rbd_dev->rbd_client);
 	rbd_spec_put(rbd_dev->spec);
+	kfree(rbd_dev->opts);
 	kfree(rbd_dev);
 }
 
@@ -4945,6 +4970,7 @@ static int rbd_add_parse_args(const char *buf,
 		goto out_mem;
 
 	rbd_opts->read_only = RBD_READ_ONLY_DEFAULT;
+	rbd_opts->queue_depth = RBD_QUEUE_DEPTH_DEFAULT;
 
 	copts = ceph_parse_options(options, mon_addrs,
 					mon_addrs + mon_addrs_size - 1,
@@ -4975,8 +5001,8 @@ out_err:
  */
 static int rbd_add_get_pool_id(struct rbd_client *rbdc, const char *pool_name)
 {
+	struct ceph_options *opts = rbdc->client->options;
 	u64 newest_epoch;
-	unsigned long timeout = rbdc->client->options->mount_timeout * HZ;
 	int tries = 0;
 	int ret;
 
@@ -4991,7 +5017,8 @@ again:
 		if (rbdc->client->osdc.osdmap->epoch < newest_epoch) {
 			ceph_monc_request_next_osdmap(&rbdc->client->monc);
 			(void) ceph_monc_wait_osdmap(&rbdc->client->monc,
-						     newest_epoch, timeout);
+						     newest_epoch,
+						     opts->mount_timeout);
 			goto again;
 		} else {
 			/* the osdmap we have is new enough */
@@ -5160,7 +5187,7 @@ static int rbd_dev_probe_parent(struct rbd_device *rbd_dev)
 	rbdc = __rbd_get_client(rbd_dev->rbd_client);
 
 	ret = -ENOMEM;
-	parent = rbd_dev_create(rbdc, parent_spec);
+	parent = rbd_dev_create(rbdc, parent_spec, NULL);
 	if (!parent)
 		goto out_err;
 
@@ -5406,9 +5433,6 @@ static ssize_t do_rbd_add(struct bus_type *bus,
 	rc = rbd_add_parse_args(buf, &ceph_opts, &rbd_opts, &spec);
 	if (rc < 0)
 		goto err_out_module;
-	read_only = rbd_opts->read_only;
-	kfree(rbd_opts);
-	rbd_opts = NULL;	/* done with this */
 
 	rbdc = rbd_get_client(ceph_opts);
 	if (IS_ERR(rbdc)) {
@@ -5434,11 +5458,12 @@ static ssize_t do_rbd_add(struct bus_type *bus,
 		goto err_out_client;
 	}
 
-	rbd_dev = rbd_dev_create(rbdc, spec);
+	rbd_dev = rbd_dev_create(rbdc, spec, rbd_opts);
 	if (!rbd_dev)
 		goto err_out_client;
 	rbdc = NULL;		/* rbd_dev now owns this */
 	spec = NULL;		/* rbd_dev now owns this */
+	rbd_opts = NULL;	/* rbd_dev now owns this */
 
 	rc = rbd_dev_image_probe(rbd_dev, true);
 	if (rc < 0)
@@ -5446,6 +5471,7 @@ static ssize_t do_rbd_add(struct bus_type *bus,
 
 	/* If we are mapping a snapshot it must be marked read-only */
 
+	read_only = rbd_dev->opts->read_only;
 	if (rbd_dev->spec->snap_id != CEPH_NOSNAP)
 		read_only = true;
 	rbd_dev->mapping.read_only = read_only;
@@ -5470,6 +5496,7 @@ err_out_client:
 	rbd_put_client(rbdc);
 err_out_args:
 	rbd_spec_put(spec);
+	kfree(rbd_opts);
 err_out_module:
 	module_put(THIS_MODULE);