ext4 crypto: enable encryption feature flag

Also add the test dummy encryption mode flag so we can more easily
test the encryption patches using xfstests.

Signed-off-by: Michael Halcrow <mhalcrow@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

1 files changed, 13 insertions, 4 deletions

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 86d15706d27a..0179654faf79 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1200,8 +1200,16 @@ struct ext4_super_block {
 /*
  * run-time mount flags
  */
-#define EXT4_MF_MNTDIR_SAMPLED  0x0001
-#define EXT4_MF_FS_ABORTED      0x0002  /* Fatal error detected */
+#define EXT4_MF_MNTDIR_SAMPLED          0x0001
+#define EXT4_MF_FS_ABORTED              0x0002  /* Fatal error detected */
+#define EXT4_MF_TEST_DUMMY_ENCRYPTION   0x0004
+
+#ifdef CONFIG_EXT4_FS_ENCRYPTION
+#define DUMMY_ENCRYPTION_ENABLED(sbi) (unlikely((sbi)->s_mount_flags & \
+                                                EXT4_MF_TEST_DUMMY_ENCRYPTION))
+#else
+#define DUMMY_ENCRYPTION_ENABLED(sbi) (0)
+#endif
 
 /* Number of quota types we support */
 #define EXT4_MAXQUOTAS 2
@@ -1613,8 +1621,9 @@ static inline int ext4_encrypted_inode(struct inode *inode)
                                          EXT4_FEATURE_INCOMPAT_EXTENTS| \
                                          EXT4_FEATURE_INCOMPAT_64BIT| \
                                          EXT4_FEATURE_INCOMPAT_FLEX_BG| \
-                                         EXT4_FEATURE_INCOMPAT_MMP |    \
-                                         EXT4_FEATURE_INCOMPAT_INLINE_DATA)
+                                         EXT4_FEATURE_INCOMPAT_MMP | \
+                                         EXT4_FEATURE_INCOMPAT_INLINE_DATA | \
+                                         EXT4_FEATURE_INCOMPAT_ENCRYPT)
 #define EXT4_FEATURE_RO_COMPAT_SUPP     (EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER| \
                                          EXT4_FEATURE_RO_COMPAT_LARGE_FILE| \
                                          EXT4_FEATURE_RO_COMPAT_GDT_CSUM| \