linux-ext4 - Re: How to enable CONFIG_EXT4

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Message-ID: <20170807095126.hyhrrnr4vrj3ne4k@linux>
Date:   Mon, 7 Aug 2017 17:51:26 +0800
From:   Dai Xiang <xiangx.dai@...el.com>
To:     linux-ext4@...r.kernel.org
Cc:     Xiang Dai <xiangx.dai@...el.com>
Subject: Re: How to enable CONFIG_EXT4_ENCRYPTION

On Mon, Aug 07, 2017 at 11:25:02AM +0800, Dai Xiang wrote:
> Hi!
> 
> I use xfstests with ext4 fs to test, and i found a skip:
> 
> ext4/024         [not run] kernel does not support ext4 encryption

i print the cmd:
/usr/sbin/xfs_io -i -c set_encpolicy /fs/scratch/tmpdir
/fs/scratch/tmpdir: failed to set encryption policy: Inappropriate
ioctl for device <===

Seems do not related to kconfig?

/dev/vdd on /fs/scratch type ext4 (rw,relatime,data=ordered)
df -T /dev/vdd
Filesystem     Type  Size  Used Avail Use% Mounted on
/dev/vdd       ext4  251G   86G  154G  36% /fs/scratch
> 
> I have rebuild config with CONFIG_FS_ENCRYPTION and CONFIG_EXT4_ENCRYPTION.
> I try to set them both y and both m, but two ways both do not set and do not find related failure log.
> I use v4.13-rc3 kernel to build.
> 
> Do i miss some dependence kconfig?
> 
> Thanks
> Xiang