Re: [PATCH] ext4: do not advertise encryption support when disabled
From: Theodore Ts'o
Date: Wed Oct 12 2016 - 23:29:25 EST
On Mon, Oct 10, 2016 at 12:05:31PM -0700, Eric Biggers wrote:
> 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@xxxxxxxxxx>