The rbd options don't really apply to the ceph client. So don't store a pointer to it in the ceph_client structure, and put them (a struct, not a pointer) into the rbd_dev structure proper.
Pass the rbd device structure to rbd_client_create() so it can assign rbd_dev->rbdc if successful, and have it return an error code instead of the rbd client pointer. Signed-off-by: Alex Elder <[email protected]> --- drivers/block/rbd.c | 49 ++++++++++++++++--------------------------------- 1 file changed, 16 insertions(+), 33 deletions(-) diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 130dbc2..b40f553 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -98,7 +98,6 @@ struct rbd_options { */ struct rbd_client { struct ceph_client *client; - struct rbd_options *rbd_opts; struct kref kref; struct list_head node; }; @@ -152,6 +151,7 @@ struct rbd_device { struct gendisk *disk; /* blkdev's gendisk and rq */ struct request_queue *q; + struct rbd_options rbd_opts; struct rbd_client *rbd_client; char name[DEV_NAME_LEN]; /* blkdev name, e.g. rbd3 */ @@ -273,8 +273,7 @@ static const struct block_device_operations rbd_bd_ops = { * Initialize an rbd client instance. * We own *ceph_opts. */ -static struct rbd_client *rbd_client_create(struct ceph_options *ceph_opts, - struct rbd_options *rbd_opts) +static struct rbd_client *rbd_client_create(struct ceph_options *ceph_opts) { struct rbd_client *rbdc; int ret = -ENOMEM; @@ -298,8 +297,6 @@ static struct rbd_client *rbd_client_create(struct ceph_options *ceph_opts, if (ret < 0) goto out_err; - rbdc->rbd_opts = rbd_opts; - spin_lock(&rbd_client_list_lock); list_add_tail(&rbdc->node, &rbd_client_list); spin_unlock(&rbd_client_list_lock); @@ -402,42 +399,33 @@ static int parse_rbd_opts_token(char *c, void *private) * Get a ceph client with specific addr and configuration, if one does * not exist create it. */ -static struct rbd_client *rbd_get_client(const char *mon_addr, - size_t mon_addr_len, - char *options) +static int rbd_get_client(struct rbd_device *rbd_dev, const char *mon_addr, + size_t mon_addr_len, char *options) { - struct rbd_client *rbdc; + struct rbd_options *rbd_opts = &rbd_dev->rbd_opts; struct ceph_options *ceph_opts; - struct rbd_options *rbd_opts; - - rbd_opts = kzalloc(sizeof(*rbd_opts), GFP_KERNEL); - if (!rbd_opts) - return ERR_PTR(-ENOMEM); + struct rbd_client *rbdc; rbd_opts->notify_timeout = RBD_NOTIFY_TIMEOUT_DEFAULT; ceph_opts = ceph_parse_options(options, mon_addr, mon_addr + mon_addr_len, parse_rbd_opts_token, rbd_opts); - if (IS_ERR(ceph_opts)) { - kfree(rbd_opts); - return ERR_CAST(ceph_opts); - } + if (IS_ERR(ceph_opts)) + return PTR_ERR(ceph_opts); rbdc = rbd_client_find(ceph_opts); if (rbdc) { /* using an existing client */ ceph_destroy_options(ceph_opts); - kfree(rbd_opts); - - return rbdc; + } else { + rbdc = rbd_client_create(ceph_opts); + if (IS_ERR(rbdc)) + return PTR_ERR(rbdc); } + rbd_dev->rbd_client = rbdc; - rbdc = rbd_client_create(ceph_opts, rbd_opts); - if (IS_ERR(rbdc)) - kfree(rbd_opts); - - return rbdc; + return 0; } /* @@ -455,7 +443,6 @@ static void rbd_client_release(struct kref *kref) spin_unlock(&rbd_client_list_lock); ceph_destroy_client(rbdc->client); - kfree(rbdc->rbd_opts); kfree(rbdc); } @@ -2526,13 +2513,9 @@ static ssize_t rbd_add(struct bus_type *bus, if (rc) goto err_put_id; - rbd_dev->rbd_client = rbd_get_client(mon_addrs, mon_addrs_size - 1, - options); - if (IS_ERR(rbd_dev->rbd_client)) { - rc = PTR_ERR(rbd_dev->rbd_client); - rbd_dev->rbd_client = NULL; + rc = rbd_get_client(rbd_dev, mon_addrs, mon_addrs_size - 1, options); + if (rc < 0) goto err_put_id; - } /* pick the pool */ osdc = &rbd_dev->rbd_client->client->osdc; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
