btrfs: unlock extents in btrfs_zero_range in case of quota reservation errors

[linux-2.6-microblaze.git] / fs / btrfs / file.c

diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 01a72f5..2c28266 100644 (file)
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -3260,8 +3260,11 @@ reserve_space:
                        goto out;
                ret = btrfs_qgroup_reserve_data(BTRFS_I(inode), &data_reserved,
                                                alloc_start, bytes_to_reserve);
-               if (ret)
+               if (ret) {
+                       unlock_extent_cached(&BTRFS_I(inode)->io_tree, lockstart,
+                                            lockend, &cached_state);
                        goto out;
+               }
                ret = btrfs_prealloc_file_range(inode, mode, alloc_start,
                                                alloc_end - alloc_start,
                                                i_blocksize(inode),