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 --- fs/btrfs/tree-defrag.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'fs/btrfs/tree-defrag.c') diff --git a/fs/btrfs/tree-defrag.c b/fs/btrfs/tree-defrag.c index a09064a9a41..35fd20d2464 100644 --- a/fs/btrfs/tree-defrag.c +++ b/fs/btrfs/tree-defrag.c @@ -86,7 +86,7 @@ static int defrag_walk_down(struct btrfs_trans_handle *trans, if (cache_only) { next = btrfs_find_tree_block(root, blocknr); if (!next || !buffer_uptodate(next) || - buffer_locked(next)) { + buffer_locked(next) || !buffer_defrag(next)) { brelse(next); path->slots[*level]++; continue; @@ -142,6 +142,7 @@ static int defrag_walk_up(struct btrfs_trans_handle *trans, root->defrag_level = i; return 0; } else { + clear_buffer_defrag(path->nodes[*level]); btrfs_block_release(root, path->nodes[*level]); path->nodes[*level] = NULL; *level = i + 1; -- cgit v1.2.3