eCryptfs: Fix data corruption when using ecryptfs_passthrough

[net-next-2.6.git] / fs / ecryptfs / inode.c

diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index 55b3145b807211102ba9477b434f3040be818e0c..5ed86e25b8a2d75c5dee47be964dc80ea4107c1f 100644 (file)
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -814,6 +814,13 @@ int ecryptfs_truncate(struct dentry *dentry, loff_t new_length)
                size_t num_zeros = (PAGE_CACHE_SIZE
                                    - (new_length & ~PAGE_CACHE_MASK));
 
+               if (!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)) {
+                       rc = vmtruncate(inode, new_length);
+                       if (rc)
+                               goto out_free;
+                       rc = vmtruncate(lower_dentry->d_inode, new_length);
+                       goto out_free;
+               }
                if (num_zeros) {
                        char *zeros_virt;
 
@@ -915,8 +922,6 @@ static int ecryptfs_setattr(struct dentry *dentry, struct iattr *ia)
                        }
                        rc = 0;
                        crypt_stat->flags &= ~(ECRYPTFS_ENCRYPTED);
-                       mutex_unlock(&crypt_stat->cs_mutex);
-                       goto out;
                }
        }
        mutex_unlock(&crypt_stat->cs_mutex);