From: Jaegeuk Kim <jaegeuk@kernel.org>
To: Satya Tangirala <satyat@google.com>
Cc: linux-fscrypt@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-f2fs-devel@lists.sourceforge.net,
linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org,
Eric Biggers <ebiggers@google.com>
Subject: Re: [PATCH v4 6/7] fscrypt: document inline encryption support
Date: Wed, 22 Jul 2020 10:01:44 -0700 [thread overview]
Message-ID: <20200722170144.GC3912099@google.com> (raw)
In-Reply-To: <20200720233739.824943-7-satyat@google.com>
On 07/20, Satya Tangirala wrote:
> Update the fscrypt documentation file for inline encryption support.
>
> Signed-off-by: Satya Tangirala <satyat@google.com>
> Reviewed-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Jaegeuk Kim <jaegeuk@kernel.org>
> ---
> Documentation/filesystems/fscrypt.rst | 16 +++++++++++++++-
> 1 file changed, 15 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/filesystems/fscrypt.rst b/Documentation/filesystems/fscrypt.rst
> index f5d8b0303ddf..ec81598477fc 100644
> --- a/Documentation/filesystems/fscrypt.rst
> +++ b/Documentation/filesystems/fscrypt.rst
> @@ -1204,6 +1204,18 @@ buffer. Some filesystems, such as UBIFS, already use temporary
> buffers regardless of encryption. Other filesystems, such as ext4 and
> F2FS, have to allocate bounce pages specially for encryption.
>
> +Fscrypt is also able to use inline encryption hardware instead of the
> +kernel crypto API for en/decryption of file contents. When possible,
> +and if directed to do so (by specifying the 'inlinecrypt' mount option
> +for an ext4/F2FS filesystem), it adds encryption contexts to bios and
> +uses blk-crypto to perform the en/decryption instead of making use of
> +the above read/write path changes. Of course, even if directed to
> +make use of inline encryption, fscrypt will only be able to do so if
> +either hardware inline encryption support is available for the
> +selected encryption algorithm or CONFIG_BLK_INLINE_ENCRYPTION_FALLBACK
> +is selected. If neither is the case, fscrypt will fall back to using
> +the above mentioned read/write path changes for en/decryption.
> +
> Filename hashing and encoding
> -----------------------------
>
> @@ -1250,7 +1262,9 @@ Tests
>
> To test fscrypt, use xfstests, which is Linux's de facto standard
> filesystem test suite. First, run all the tests in the "encrypt"
> -group on the relevant filesystem(s). For example, to test ext4 and
> +group on the relevant filesystem(s). One can also run the tests
> +with the 'inlinecrypt' mount option to test the implementation for
> +inline encryption support. For example, to test ext4 and
> f2fs encryption using `kvm-xfstests
> <https://github.com/tytso/xfstests-bld/blob/master/Documentation/kvm-quickstart.md>`_::
>
> --
> 2.28.0.rc0.105.gf9edc3c819-goog
next prev parent reply other threads:[~2020-07-22 17:01 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-20 23:37 [PATCH v4 0/7] add support for direct I/O with fscrypt using blk-crypto Satya Tangirala
2020-07-20 23:37 ` [PATCH v4 1/7] fscrypt: Add functions for direct I/O support Satya Tangirala
2020-07-22 17:04 ` Jaegeuk Kim
2020-07-20 23:37 ` [PATCH v4 2/7] direct-io: add support for fscrypt using blk-crypto Satya Tangirala
2020-07-22 17:05 ` Jaegeuk Kim
2020-07-20 23:37 ` [PATCH v4 3/7] iomap: support direct I/O with " Satya Tangirala
2020-07-22 17:06 ` Jaegeuk Kim
2020-07-22 21:16 ` Dave Chinner
2020-07-22 22:34 ` Eric Biggers
2020-07-22 22:44 ` Matthew Wilcox
2020-07-22 23:12 ` Eric Biggers
2020-07-22 23:26 ` Eric Biggers
2020-07-22 23:32 ` Darrick J. Wong
2020-07-22 23:43 ` Eric Biggers
2020-07-23 22:07 ` Dave Chinner
2020-07-23 23:03 ` Eric Biggers
2020-07-24 1:39 ` Dave Chinner
2020-07-24 3:46 ` Eric Biggers
2020-07-24 5:31 ` Dave Chinner
2020-07-24 17:41 ` Eric Biggers
2020-07-25 23:47 ` Dave Chinner
2020-07-25 23:59 ` Dave Chinner
2020-07-26 2:42 ` Eric Biggers
2020-07-27 17:16 ` Eric Biggers
2020-07-20 23:37 ` [PATCH v4 4/7] ext4: " Satya Tangirala
2020-07-22 17:07 ` Jaegeuk Kim
2020-07-20 23:37 ` [PATCH v4 5/7] f2fs: " Satya Tangirala
2020-07-21 20:11 ` Jaegeuk Kim
2020-07-20 23:37 ` [PATCH v4 6/7] fscrypt: document inline encryption support Satya Tangirala
2020-07-22 17:01 ` Jaegeuk Kim [this message]
2020-07-20 23:37 ` [PATCH v4 7/7] fscrypt: update documentation for direct I/O support Satya Tangirala
2020-07-21 0:47 ` Eric Biggers
2020-07-22 16:57 ` Jaegeuk Kim
2020-07-21 0:56 ` [PATCH v4 0/7] add support for direct I/O with fscrypt using blk-crypto Eric Biggers
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