linux-ext4 - Re: [PATCH v2 8/8] fscrypt: Move d_revalidate configuration back into fscrypt

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Message-ID: <20231219230328.GH38652@quark.localdomain>
Date: Tue, 19 Dec 2023 16:03:28 -0700
From: Eric Biggers <ebiggers@...nel.org>
To: Gabriel Krisman Bertazi <krisman@...e.de>
Cc: viro@...iv.linux.org.uk, jaegeuk@...nel.org, tytso@....edu,
	linux-f2fs-devel@...ts.sourceforge.net, linux-ext4@...r.kernel.org,
	linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH v2 8/8] fscrypt: Move d_revalidate configuration back
 into fscrypt

On Fri, Dec 15, 2023 at 04:16:08PM -0500, Gabriel Krisman Bertazi wrote:
>  int __fscrypt_prepare_lookup(struct inode *dir, struct dentry *dentry,
>  			     struct fscrypt_name *fname)
>  {
> @@ -106,6 +110,10 @@ int __fscrypt_prepare_lookup(struct inode *dir, struct dentry *dentry,
>  		spin_lock(&dentry->d_lock);
>  		dentry->d_flags |= DCACHE_NOKEY_NAME;
>  		spin_unlock(&dentry->d_lock);
> +
> +		/* Give preference to the filesystem hooks, if any. */
> +		if (!dentry->d_op)
> +			d_set_d_op(dentry, &fscrypt_dentry_ops);

I think that fscrypt_prepare_lookup_partial() should get this too, since it sets
DCACHE_NOKEY_NAME too (though currently the only filesystem that calls it has
its own d_revalidate anyway).

- Eric