]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
ext4: Enable encryption for subpage-sized blocks
authorChandan Rajendra <chandan@linux.ibm.com>
Wed, 23 Oct 2019 03:33:12 +0000 (20:33 -0700)
committerTheodore Ts'o <tytso@mit.edu>
Thu, 14 Nov 2019 21:40:45 +0000 (16:40 -0500)
commit196624e192f8e767b06924e46495c56846b2b64e
treeead1e1932dcd732625a4e390457d66e97d128206
parent31fb992ce675ec3326dfd4db9634480391713db8
ext4: Enable encryption for subpage-sized blocks

Now that we have the code to support encryption for subpage-sized
blocks, this commit removes the conditional check in filesystem mount
code.

The commit also changes the support statement in
Documentation/filesystems/fscrypt.rst to reflect the fact that
encryption on filesystems with blocksize less than page size now works.

[EB: Tested with 'gce-xfstests -c ext4/encrypt_1k -g auto', using the
new "encrypt_1k" config I created.  All tests pass except for those that
already fail or are excluded with the encrypt or 1k configs, and 2 tests
that try to create 1023-byte symlinks which fails since encrypted
symlinks are limited to blocksize-3 bytes.  Also ran the dedicated
encryption tests using 'kvm-xfstests -c ext4/1k -g encrypt'; all pass,
including the on-disk ciphertext verification tests.]

Signed-off-by: Chandan Rajendra <chandan@linux.ibm.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20191023033312.361355-3-ebiggers@kernel.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Documentation/filesystems/fscrypt.rst
fs/ext4/super.c