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| author | Chris Mason <chris.mason@oracle.com> | 2007-08-10 14:42:37 -0400 |
|---|---|---|
| committer | David Woodhouse <dwmw2@hera.kernel.org> | 2007-08-10 14:42:37 -0400 |
| commit | f2183bde1a918d338337955c8e8ba29bd8f5e7b1 (patch) | |
| tree | e27baea3779112618d2158902270c460444feeff /fs/btrfs/tree-defrag.c | |
| parent | e9d0b13b5bbb58c9b840e407a8d181442f799966 (diff) | |
| download | linux-stable-f2183bde1a918d338337955c8e8ba29bd8f5e7b1.tar.gz linux-stable-f2183bde1a918d338337955c8e8ba29bd8f5e7b1.tar.bz2 linux-stable-f2183bde1a918d338337955c8e8ba29bd8f5e7b1.zip | |
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>
Diffstat (limited to 'fs/btrfs/tree-defrag.c')
| -rw-r--r-- | fs/btrfs/tree-defrag.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/btrfs/tree-defrag.c b/fs/btrfs/tree-defrag.c index a09064a9a41c..35fd20d24645 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; |