1 files changed, 16 insertions, 23 deletions

diff --git a/include/linux/fscrypt.h b/include/linux/fscrypt.h
index 7d2f1e0f23b1..4f5f8a651213 100644
--- a/include/linux/fscrypt.h
+++ b/include/linux/fscrypt.h
@@ -161,24 +161,21 @@ struct fscrypt_operations {
 				      int *ino_bits_ret, int *lblk_bits_ret);
 
 	/*
-	 * Return the number of block devices to which the filesystem may write
-	 * encrypted file contents.
+	 * Return an array of pointers to the block devices to which the
+	 * filesystem may write encrypted file contents, NULL if the filesystem
+	 * only has a single such block device, or an ERR_PTR() on error.
+	 *
+	 * On successful non-NULL return, *num_devs is set to the number of
+	 * devices in the returned array.  The caller must free the returned
+	 * array using kfree().
 	 *
 	 * If the filesystem can use multiple block devices (other than block
 	 * devices that aren't used for encrypted file contents, such as
 	 * external journal devices), and wants to support inline encryption,
 	 * then it must implement this function.  Otherwise it's not needed.
 	 */
-	int (*get_num_devices)(struct super_block *sb);
-
-	/*
-	 * If ->get_num_devices() returns a value greater than 1, then this
-	 * function is called to get the array of request_queues that the
-	 * filesystem is using -- one per block device.  (There may be duplicate
-	 * entries in this array, as block devices can share a request_queue.)
-	 */
-	void (*get_devices)(struct super_block *sb,
-			    struct request_queue **devs);
+	struct block_device **(*get_devices)(struct super_block *sb,
+					     unsigned int *num_devs);
 };
 
 static inline struct fscrypt_info *fscrypt_get_info(const struct inode *inode)
@@ -295,8 +292,6 @@ int fscrypt_parse_test_dummy_encryption(const struct fs_parameter *param,
 				    struct fscrypt_dummy_policy *dummy_policy);
 bool fscrypt_dummy_policies_equal(const struct fscrypt_dummy_policy *p1,
 				  const struct fscrypt_dummy_policy *p2);
-int fscrypt_set_test_dummy_encryption(struct super_block *sb, const char *arg,
-				struct fscrypt_dummy_policy *dummy_policy);
 void fscrypt_show_test_dummy_encryption(struct seq_file *seq, char sep,
 					struct super_block *sb);
 static inline bool
@@ -312,7 +307,7 @@ fscrypt_free_dummy_policy(struct fscrypt_dummy_policy *dummy_policy)
 }
 
 /* keyring.c */
-void fscrypt_sb_free(struct super_block *sb);
+void fscrypt_destroy_keyring(struct super_block *sb);
 int fscrypt_ioctl_add_key(struct file *filp, void __user *arg);
 int fscrypt_add_test_dummy_key(struct super_block *sb,
 			       const struct fscrypt_dummy_policy *dummy_policy);
@@ -353,7 +348,7 @@ u64 fscrypt_fname_siphash(const struct inode *dir, const struct qstr *name);
 int fscrypt_d_revalidate(struct dentry *dentry, unsigned int flags);
 
 /* bio.c */
-void fscrypt_decrypt_bio(struct bio *bio);
+bool fscrypt_decrypt_bio(struct bio *bio);
 int fscrypt_zeroout_range(const struct inode *inode, pgoff_t lblk,
 			  sector_t pblk, unsigned int len);
 
@@ -526,7 +521,7 @@ fscrypt_free_dummy_policy(struct fscrypt_dummy_policy *dummy_policy)
 }
 
 /* keyring.c */
-static inline void fscrypt_sb_free(struct super_block *sb)
+static inline void fscrypt_destroy_keyring(struct super_block *sb)
 {
 }
 
@@ -646,8 +641,9 @@ static inline int fscrypt_d_revalidate(struct dentry *dentry,
 }
 
 /* bio.c */
-static inline void fscrypt_decrypt_bio(struct bio *bio)
+static inline bool fscrypt_decrypt_bio(struct bio *bio)
 {
+	return true;
 }
 
 static inline int fscrypt_zeroout_range(const struct inode *inode, pgoff_t lblk,
@@ -768,7 +764,7 @@ bool fscrypt_mergeable_bio(struct bio *bio, const struct inode *inode,
 bool fscrypt_mergeable_bio_bh(struct bio *bio,
 			      const struct buffer_head *next_bh);
 
-bool fscrypt_dio_supported(struct kiocb *iocb, struct iov_iter *iter);
+bool fscrypt_dio_supported(struct inode *inode);
 
 u64 fscrypt_limit_io_blocks(const struct inode *inode, u64 lblk, u64 nr_blocks);
 
@@ -801,11 +797,8 @@ static inline bool fscrypt_mergeable_bio_bh(struct bio *bio,
 	return true;
 }
 
-static inline bool fscrypt_dio_supported(struct kiocb *iocb,
-					 struct iov_iter *iter)
+static inline bool fscrypt_dio_supported(struct inode *inode)
 {
-	const struct inode *inode = file_inode(iocb->ki_filp);
-
 	return !fscrypt_needs_contents_encryption(inode);
 }