linux-ext4 - Re: [PATCH v7 04/16] fscrypt: add ->ci_inode to fscrypt

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Date:   Sun, 28 Jul 2019 11:09:27 -0400
From:   "Theodore Y. Ts'o" <tytso@....edu>
To:     Eric Biggers <ebiggers@...nel.org>
Cc:     linux-fscrypt@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-ext4@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net,
        linux-mtd@...ts.infradead.org, linux-api@...r.kernel.org,
        linux-crypto@...r.kernel.org, keyrings@...r.kernel.org,
        Paul Crowley <paulcrowley@...gle.com>,
        Satya Tangirala <satyat@...gle.com>
Subject: Re: [PATCH v7 04/16] fscrypt: add ->ci_inode to fscrypt_info

On Fri, Jul 26, 2019 at 03:41:29PM -0700, Eric Biggers wrote:
> From: Eric Biggers <ebiggers@...gle.com>
> 
> Add an inode back-pointer to 'struct fscrypt_info', such that
> inode->i_crypt_info->ci_inode == inode.
> 
> This will be useful for:
> 
> 1. Evicting the inodes when a fscrypt key is removed, since we'll track
>    the inodes using a given key by linking their fscrypt_infos together,
>    rather than the inodes directly.  This avoids bloating 'struct inode'
>    with a new list_head.
> 
> 2. Simplifying the per-file key setup, since the inode pointer won't
>    have to be passed around everywhere just in case something goes wrong
>    and it's needed for fscrypt_warn().
> 
> Signed-off-by: Eric Biggers <ebiggers@...gle.com>

Looks good, feel free to add:

Reviewed-by: Theodore Ts'o <tytso@....edu>