4 files changed, 3 insertions, 10 deletions

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 83baec24946d..6e8f416773d4 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -324,7 +324,8 @@ static noinline int add_async_extent(struct async_cow *cow,
  * If this code finds it can't get good compression, it puts an
  * entry onto the work queue to write the uncompressed bytes.  This
  * makes sure that both compressed inodes and uncompressed inodes
- * are written in the same order that pdflush sent them down.
+ * are written in the same order that the flusher thread sent them
+ * down.
  */
 static noinline int compress_file_range(struct inode *inode,
                                         struct page *locked_page,
diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c
index 643335a4fe3c..051c7fe551dd 100644
--- a/fs/btrfs/ordered-data.c
+++ b/fs/btrfs/ordered-data.c
@@ -596,7 +596,7 @@ void btrfs_start_ordered_extent(struct inode *inode,
         /*
          * pages in the range can be dirty, clean or writeback.  We
          * start IO on any dirty ones so the wait doesn't stall waiting
-         * for pdflush to find them
+         * for the flusher thread to find them
          */
         if (!test_bit(BTRFS_ORDERED_DIRECT, &entry->flags))
                 filemap_fdatawrite_range(inode->i_mapping, start, end);
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 8c6e61d6eed5..f2eb24c477a3 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -100,10 +100,6 @@ static void __save_error_info(struct btrfs_fs_info *fs_info)
         fs_info->fs_state = BTRFS_SUPER_FLAG_ERROR;
 }
 
-/* NOTE:
- *      We move write_super stuff at umount in order to avoid deadlock
- *      for umount hold all lock.
- */
 static void save_error_info(struct btrfs_fs_info *fs_info)
 {
         __save_error_info(fs_info);
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index b8708f994e67..e86ae04abe6a 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -1744,10 +1744,6 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path)
 
         device->fs_devices = root->fs_info->fs_devices;
 
-        /*
-         * we don't want write_supers to jump in here with our device
-         * half setup
-         */
         mutex_lock(&root->fs_info->fs_devices->device_list_mutex);
         list_add_rcu(&device->dev_list, &root->fs_info->fs_devices->devices);
         list_add(&device->dev_alloc_list,