diff options
| author | Eric Biggers <ebiggers@google.com> | 2016-10-12 23:24:51 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2016-10-12 23:24:51 -0400 |
| commit | c4704a4fbe834eee4109ca064131d440941f6235 (patch) | |
| tree | a5f4bccc9c151ba68bca4a090704451fb6b95d98 | |
| parent | 559cce698eaf4ccecb2213b2519ea3a0413e5155 (diff) | |
ext4: do not advertise encryption support when disabled
The sysfs file /sys/fs/ext4/features/encryption was present on kernels
compiled with CONFIG_EXT4_FS_ENCRYPTION=n. This was misleading because
such kernels do not actually support ext4 encryption. Therefore, only
provide this file on kernels compiled with CONFIG_EXT4_FS_ENCRYPTION=y.
Note: since the ext4 feature files are all hardcoded to have a contents
of "supported", it really is the presence or absence of the file that is
significant, not the contents (and this change reflects that).
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org