Btrfs: Use balance_dirty_pages_nr on btree blocks

btrfs_btree_balance_dirty is changed to pass the number of pages dirtied
for more accurate dirty throttling.  This lets the VM make better decisions
about when to force some writeback.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 26826a543355..698eaea612f1 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -655,7 +655,7 @@ static ssize_t btrfs_file_write(struct file *file, const char __user *buf,
                 num_written += write_bytes;
 
                 balance_dirty_pages_ratelimited_nr(inode->i_mapping, num_pages);
-                btrfs_btree_balance_dirty(root);
+                btrfs_btree_balance_dirty(root, 1);
                 cond_resched();
         }
         mutex_unlock(&inode->i_mutex);