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Date: Wed, 8 Jul 2020 13:18:12 -0400 From: tytso@....edu To: Satya Tangirala <satyat@...gle.com> Cc: linux-fscrypt@...r.kernel.org, linux-fsdevel@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net, linux-ext4@...r.kernel.org, Eric Biggers <ebiggers@...gle.com> Subject: Re: [PATCH v4 4/4] ext4: add inline encryption support On Thu, Jul 02, 2020 at 01:56:07AM +0000, Satya Tangirala wrote: > From: Eric Biggers <ebiggers@...gle.com> > > Wire up ext4 to support inline encryption via the helper functions which > fs/crypto/ now provides. This includes: > > - Adding a mount option 'inlinecrypt' which enables inline encryption > on encrypted files where it can be used. > > - Setting the bio_crypt_ctx on bios that will be submitted to an > inline-encrypted file. > > Note: submit_bh_wbc() in fs/buffer.c also needed to be patched for > this part, since ext4 sometimes uses ll_rw_block() on file data. > > - Not adding logically discontiguous data to bios that will be submitted > to an inline-encrypted file. > > - Not doing filesystem-layer crypto on inline-encrypted files. > > Signed-off-by: Eric Biggers <ebiggers@...gle.com> > Co-developed-by: Satya Tangirala <satyat@...gle.com> > Signed-off-by: Satya Tangirala <satyat@...gle.com> Reviewed-by: Theodore Ts'o <tytso@....edu>
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