diff options
Diffstat (limited to 'fs/btrfs/disk-io.c')
| -rw-r--r-- | fs/btrfs/disk-io.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 39b117a57a5..055cd45e802 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -214,6 +214,8 @@ struct buffer_head *read_tree_block(struct btrfs_root *root, u64 blocknr) bh = btrfs_find_create_tree_block(root, blocknr); if (!bh) return bh; + if (buffer_uptodate(bh)) + goto uptodate; lock_buffer(bh); if (!buffer_uptodate(bh)) { get_bh(bh); @@ -226,6 +228,7 @@ struct buffer_head *read_tree_block(struct btrfs_root *root, u64 blocknr) } else { unlock_buffer(bh); } +uptodate: if (check_tree_block(root, bh)) BUG(); return bh; |