ceph: name bdi ceph-%d instead of major:minor
The bdi_setup_and_register() helper doesn't help us since we bdi_init() in
create_client() and bdi_register() only when sget() succeeds.
Signed-off-by: Sage Weil <sage@newdream.net>
diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index 34b16cb..7f5b20d 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -910,6 +910,8 @@
/*
* construct our own bdi so we can control readahead, etc.
*/
+static atomic_long_t bdi_seq = ATOMIC_INIT(0);
+
static int ceph_register_bdi(struct super_block *sb, struct ceph_client *client)
{
int err;
@@ -919,7 +921,8 @@
client->backing_dev_info.ra_pages =
(client->mount_args->rsize + PAGE_CACHE_SIZE - 1)
>> PAGE_SHIFT;
- err = bdi_register_dev(&client->backing_dev_info, sb->s_dev);
+ err = bdi_register(&client->backing_dev_info, NULL, "ceph-%d",
+ atomic_long_inc_return(&bdi_seq));
if (!err)
sb->s_bdi = &client->backing_dev_info;
return err;