1 files changed, 31 insertions, 4 deletions

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 6edacb849e48..abc9e169cb44 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -589,6 +589,7 @@ enum {
 #define EXT4_ENCRYPTION_MODE_AES_256_GCM	2
 #define EXT4_ENCRYPTION_MODE_AES_256_CBC	3
 #define EXT4_ENCRYPTION_MODE_AES_256_CTS	4
+#define EXT4_ENCRYPTION_MODE_PRIVATE		127
 #define EXT4_ENCRYPTION_MODE_AES_256_HEH	126
 
 #include "ext4_crypto.h"
@@ -2270,7 +2271,8 @@ struct page *ext4_encrypt(struct inode *inode,
 			  struct page *plaintext_page,
 			  gfp_t gfp_flags);
 int ext4_decrypt(struct page *page);
-int ext4_encrypted_zeroout(struct inode *inode, struct ext4_extent *ex);
+int ext4_encrypted_zeroout(struct inode *inode, ext4_lblk_t lblk,
+			   ext4_fsblk_t pblk, ext4_lblk_t len);
 extern const struct dentry_operations ext4_encrypted_d_ops;
 
 #ifdef CONFIG_EXT4_FS_ENCRYPTION
@@ -2334,17 +2336,37 @@ static inline void ext4_fname_free_filename(struct ext4_filename *fname) { }
 /* crypto_key.c */
 void ext4_free_crypt_info(struct ext4_crypt_info *ci);
 void ext4_free_encryption_info(struct inode *inode, struct ext4_crypt_info *ci);
+int _ext4_get_encryption_info(struct inode *inode);
 
 #ifdef CONFIG_EXT4_FS_ENCRYPTION
 int ext4_has_encryption_key(struct inode *inode);
 
-int ext4_get_encryption_info(struct inode *inode);
+static inline int ext4_get_encryption_info(struct inode *inode)
+{
+	struct ext4_crypt_info *ci = EXT4_I(inode)->i_crypt_info;
+
+	if (!ci ||
+	    (ci->ci_keyring_key &&
+	     (ci->ci_keyring_key->flags & ((1 << KEY_FLAG_INVALIDATED) |
+					   (1 << KEY_FLAG_REVOKED) |
+					   (1 << KEY_FLAG_DEAD)))))
+		return _ext4_get_encryption_info(inode);
+	return 0;
+}
 
 static inline struct ext4_crypt_info *ext4_encryption_info(struct inode *inode)
 {
 	return EXT4_I(inode)->i_crypt_info;
 }
 
+static inline int ext4_using_hardware_encryption(struct inode *inode)
+{
+	struct ext4_crypt_info *ci = ext4_encryption_info(inode);
+
+	return S_ISREG(inode->i_mode) && ci &&
+		ci->ci_data_mode == EXT4_ENCRYPTION_MODE_PRIVATE;
+}
+
 #else
 static inline int ext4_has_encryption_key(struct inode *inode)
 {
@@ -2358,6 +2380,10 @@ static inline struct ext4_crypt_info *ext4_encryption_info(struct inode *inode)
 {
 	return NULL;
 }
+static inline int ext4_using_hardware_encryption(struct inode *inode)
+{
+	return 0;
+}
 #endif
 
 
@@ -2514,6 +2540,8 @@ extern int ext4_filemap_fault(struct vm_area_struct *vma, struct vm_fault *vmf);
 extern qsize_t *ext4_get_reserved_space(struct inode *inode);
 extern void ext4_da_update_reserve_space(struct inode *inode,
 					int used, int quota_claim);
+extern int ext4_issue_zeroout(struct inode *inode, ext4_lblk_t lblk,
+			      ext4_fsblk_t pblk, ext4_lblk_t len);
 
 /* indirect.c */
 extern int ext4_ind_map_blocks(handle_t *handle, struct inode *inode,
@@ -3016,8 +3044,7 @@ extern int ext4_da_write_inline_data_end(struct inode *inode, loff_t pos,
 					 struct page *page);
 extern int ext4_try_add_inline_entry(handle_t *handle,
 				     struct ext4_filename *fname,
-				     struct dentry *dentry,
-				     struct inode *inode);
+				     struct inode *dir, struct inode *inode);
 extern int ext4_try_create_inline_dir(handle_t *handle,
 				      struct inode *parent,
 				      struct inode *inode);