Btrfs: Add mount -o ssd, which includes optimizations for seek free storage

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

1 files changed, 3 insertions, 0 deletions

diff --git a/fs/btrfs/tree-defrag.c b/fs/btrfs/tree-defrag.c
index 5c58630dce03..5935cbd8f2b8 100644
--- 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;