From f2183bde1a918d338337955c8e8ba29bd8f5e7b1 Mon Sep 17 00:00:00 2001
From: Chris Mason
Date: Fri, 10 Aug 2007 14:42:37 -0400
Subject: Btrfs: Add BH_Defrag to mark buffers that are in need of defragging

This allows the tree walking code to defrag only the newly allocated
buffers, it seems to be a good balance between perfect defragging and the
performance hit of repeatedly reallocating blocks.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
---
 fs/btrfs/disk-io.h | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'fs/btrfs/disk-io.h')

diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h
index 9e2c261b41ae..81fd18cbd824 100644
--- a/fs/btrfs/disk-io.h
+++ b/fs/btrfs/disk-io.h
@@ -25,8 +25,10 @@
 
 enum btrfs_bh_state_bits {
 	BH_Checked = BH_PrivateStart,
+	BH_Defrag,
 };
 BUFFER_FNS(Checked, checked);
+BUFFER_FNS(Defrag, defrag);
 
 static inline struct btrfs_node *btrfs_buffer_node(struct buffer_head *bh)
 {
-- 
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