linux-kernel - Re: [PATCH v3 1/3] libfs: Add generic function for setting dentry

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Date:   Wed, 18 Nov 2020 10:32:02 -0800
From:   Eric Biggers <ebiggers@...nel.org>
To:     Daniel Rosenberg <drosen@...gle.com>
Cc:     "Theodore Y . Ts'o" <tytso@....edu>,
        Jaegeuk Kim <jaegeuk@...nel.org>,
        Andreas Dilger <adilger.kernel@...ger.ca>,
        Chao Yu <chao@...nel.org>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Richard Weinberger <richard@....at>,
        linux-fscrypt@...r.kernel.org, linux-ext4@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-mtd@...ts.infradead.org,
        Gabriel Krisman Bertazi <krisman@...labora.com>,
        kernel-team@...roid.com
Subject: Re: [PATCH v3 1/3] libfs: Add generic function for setting dentry_ops

On Wed, Nov 18, 2020 at 06:42:43AM +0000, Daniel Rosenberg wrote:
> +#if IS_ENABLED(CONFIG_UNICODE) && IS_ENABLED(CONFIG_FS_ENCRYPTION)
> +static const struct dentry_operations generic_encrypted_ci_dentry_ops = {
> +	.d_hash = generic_ci_d_hash,
> +	.d_compare = generic_ci_d_compare,
> +	.d_revalidate = fscrypt_d_revalidate,
> +};
> +#endif

One nit: it would be good to change the #if condition above to:

	#if defined(CONFIG_FS_ENCRYPTION) && defined(CONFIG_UNICODE)

... to make it identical to the #if condition later on:

> +#if defined(CONFIG_FS_ENCRYPTION) && defined(CONFIG_UNICODE)
> +	if (needs_encrypt_ops && needs_ci_ops) {
> +		d_set_d_op(dentry, &generic_encrypted_ci_dentry_ops);
> +		return;
> +	}
>  #endif

It doesn't actually matter, but it's nice to keep things consistent.

Otherwise, please feel free to add:

	Reviewed-by: Eric Biggers <ebiggers@...gle.com>

- Eric