ceph: init/destroy bdi in client create/destroy helpers

This keeps bdi setup/teardown in line with client life cycle.

Signed-off-by: Sage Weil <sage@newdream.net>

diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index 9b7815d..0ae40ba 100644 (file)
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -508,10 +508,14 @@ static struct ceph_client *ceph_create_client(struct ceph_mount_args *args)
        client->signed_ticket = NULL;
        client->signed_ticket_len = 0;
 
+       err = bdi_init(&client->backing_dev_info);
+       if (err < 0)
+               goto fail;
+
        err = -ENOMEM;
        client->wb_wq = create_workqueue("ceph-writeback");
        if (client->wb_wq == NULL)
-               goto fail;
+               goto fail_bdi;
        client->pg_inv_wq = create_singlethread_workqueue("ceph-pg-invalid");
        if (client->pg_inv_wq == NULL)
                goto fail_wb_wq;
@@ -537,6 +541,8 @@ fail_pg_inv_wq:
        destroy_workqueue(client->pg_inv_wq);
 fail_wb_wq:
        destroy_workqueue(client->wb_wq);
+fail_bdi:
+       bdi_destroy(&client->backing_dev_info);
 fail:
        kfree(client);
        return ERR_PTR(err);
@@ -774,13 +780,10 @@ static int ceph_compare_super(struct super_block *sb, void *data)
 /*
  * construct our own bdi so we can control readahead, etc.
  */
-static int ceph_init_bdi(struct super_block *sb, struct ceph_client *client)
+static int ceph_register_bdi(struct super_block *sb, struct ceph_client *client)
 {
        int err;
 
-       err = bdi_init(&client->backing_dev_info);
-       if (err < 0)
-               return err;
        sb->s_bdi = &client->backing_dev_info;
 
        /* set ra_pages based on rsize mount option? */
@@ -840,7 +843,7 @@ static int ceph_get_sb(struct file_system_type *fs_type,
                if (!client->wb_pagevec_pool)
                        goto out_splat;
 
-               err = ceph_init_bdi(sb, client);
+               err = ceph_register_bdi(sb, client);
                if (err < 0)
                        goto out_splat;
        }