Btrfs: remove unwanted printk() for btrfs device I/O stats

People complained about the annoying kernel log message
"btrfs: no dev_stats entry found ... (OK on first mount after mkfs)"
everytime a filesystem is mounted for the first time after running
mkfs. Since the distribution of the btrfs-progs is not synchronized
to the kernel version, mkfs like it is now will be used also in the
future. Then this message is not useful to find errors, it is just
annoying. This commit removes the printk().

Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>

1 files changed, 0 insertions, 3 deletions

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 39a0d04759f8..14436074350f 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -4743,9 +4743,6 @@ int btrfs_init_dev_stats(struct btrfs_fs_info *fs_info)
                 key.offset = device->devid;
                 ret = btrfs_search_slot(NULL, dev_root, &key, path, 0, 0);
                 if (ret) {
-                        printk_in_rcu(KERN_WARNING "btrfs: no dev_stats entry found for device %s (devid %llu) (OK on first mount after mkfs)\n",
-                                      rcu_str_deref(device->name),
-                                      (unsigned long long)device->devid);
                         __btrfs_reset_dev_stats(device);
                         device->dev_stats_valid = 1;
                         btrfs_release_path(path);