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From: Gabriel Krisman Bertazi <krisman@suse.de>
To: ebiggers@kernel.org,
	viro@zeniv.linux.org.uk,
	jaegeuk@kernel.org,
	tytso@mit.edu
Cc: amir73il@gmail.com,
	linux-ext4@vger.kernel.org,
	linux-f2fs-devel@lists.sourceforge.net,
	linux-fsdevel@vger.kernel.org,
	Gabriel Krisman Bertazi <krisman@suse.de>
Subject: [PATCH v5 03/12] fscrypt: Call fscrypt_prepare_lookup_dentry on unencrypted dentries
Date: Mon, 29 Jan 2024 17:43:21 -0300
Message-ID: <20240129204330.32346-4-krisman@suse.de>
In-Reply-To: <20240129204330.32346-1-krisman@suse.de>
References: <20240129204330.32346-1-krisman@suse.de>
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In preparation to dropping DCACHE_OP_REVALIDATE for dentries that
don't need it at lookup time, refactor the code to make unencrypted
denties also call fscrypt_prepare_dentry.  This makes the
non-inline __fscrypt_prepare_lookup superfulous, so drop it.

Signed-off-by: Gabriel Krisman Bertazi <krisman@suse.de>
---
 fs/crypto/hooks.c       | 14 --------------
 include/linux/fscrypt.h | 31 +++++++++++++++----------------
 2 files changed, 15 insertions(+), 30 deletions(-)

diff --git a/fs/crypto/hooks.c b/fs/crypto/hooks.c
index 71463cef08f9..eb870bc162e6 100644
--- a/fs/crypto/hooks.c
+++ b/fs/crypto/hooks.c
@@ -94,20 +94,6 @@ int __fscrypt_prepare_rename(struct inode *old_dir, struct dentry *old_dentry,
 }
 EXPORT_SYMBOL_GPL(__fscrypt_prepare_rename);
 
-int __fscrypt_prepare_lookup(struct inode *dir, struct dentry *dentry,
-			     struct fscrypt_name *fname)
-{
-	int err = fscrypt_setup_filename(dir, &dentry->d_name, 1, fname);
-
-	if (err && err != -ENOENT)
-		return err;
-
-	fscrypt_prepare_lookup_dentry(dentry, fname->is_nokey_name);
-
-	return err;
-}
-EXPORT_SYMBOL_GPL(__fscrypt_prepare_lookup);
-
 /**
  * fscrypt_prepare_lookup_partial() - prepare lookup without filename setup
  * @dir: the encrypted directory being searched
diff --git a/include/linux/fscrypt.h b/include/linux/fscrypt.h
index 68ca8706483a..4aaf847955c0 100644
--- a/include/linux/fscrypt.h
+++ b/include/linux/fscrypt.h
@@ -382,8 +382,6 @@ int __fscrypt_prepare_link(struct inode *inode, struct inode *dir,
 int __fscrypt_prepare_rename(struct inode *old_dir, struct dentry *old_dentry,
 			     struct inode *new_dir, struct dentry *new_dentry,
 			     unsigned int flags);
-int __fscrypt_prepare_lookup(struct inode *dir, struct dentry *dentry,
-			     struct fscrypt_name *fname);
 int fscrypt_prepare_lookup_partial(struct inode *dir, struct dentry *dentry);
 int __fscrypt_prepare_readdir(struct inode *dir);
 int __fscrypt_prepare_setattr(struct dentry *dentry, struct iattr *attr);
@@ -704,13 +702,6 @@ static inline int __fscrypt_prepare_rename(struct inode *old_dir,
 	return -EOPNOTSUPP;
 }
 
-static inline int __fscrypt_prepare_lookup(struct inode *dir,
-					   struct dentry *dentry,
-					   struct fscrypt_name *fname)
-{
-	return -EOPNOTSUPP;
-}
-
 static inline int fscrypt_prepare_lookup_partial(struct inode *dir,
 						 struct dentry *dentry)
 {
@@ -985,14 +976,22 @@ static inline int fscrypt_prepare_lookup(struct inode *dir,
 					 struct dentry *dentry,
 					 struct fscrypt_name *fname)
 {
-	if (IS_ENCRYPTED(dir))
-		return __fscrypt_prepare_lookup(dir, dentry, fname);
+	int err = 0;
+
+	if (IS_ENCRYPTED(dir)) {
+		err = fscrypt_setup_filename(dir, &dentry->d_name, 1, fname);
+		if (err && err != -ENOENT)
+			return err;
+	} else {
+		memset(fname, 0, sizeof(*fname));
+		fname->usr_fname = &dentry->d_name;
+		fname->disk_name.name = (unsigned char *)dentry->d_name.name;
+		fname->disk_name.len = dentry->d_name.len;
+	}
 
-	memset(fname, 0, sizeof(*fname));
-	fname->usr_fname = &dentry->d_name;
-	fname->disk_name.name = (unsigned char *)dentry->d_name.name;
-	fname->disk_name.len = dentry->d_name.len;
-	return 0;
+	fscrypt_prepare_lookup_dentry(dentry, fname->is_nokey_name);
+
+	return err;
 }
 
 /**
-- 
2.43.0