Btrfs: Disable tree defrag in SSD mode

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

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 220e9be..af5d4a0 100644 (file)
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -1835,7 +1835,8 @@ struct extent_buffer *__btrfs_alloc_free_block(struct btrfs_trans_handle *trans,
                        buf->start, buf->start + buf->len - 1,
                        EXTENT_CSUM, GFP_NOFS);
        buf->flags |= EXTENT_CSUM;
-       btrfs_set_buffer_defrag(buf);
+       if (!btrfs_test_opt(root, SSD))
+               btrfs_set_buffer_defrag(buf);
        trans->blocks_used++;
        return buf;
 }

diff --git a/fs/btrfs/tree-defrag.c b/fs/btrfs/tree-defrag.c
index 5c58630..5935cbd 100644 (file)
--- a/fs/btrfs/tree-defrag.c
+++ b/fs/btrfs/tree-defrag.c
@@ -179,6 +179,9 @@ int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
        if (root->ref_cows == 0 && !is_extent)
                goto out;
 
+       if (btrfs_test_opt(root, SSD))
+               goto out;
+
        path = btrfs_alloc_path();
        if (!path)
                return -ENOMEM;