ext4: add read support for inline data

Let readpage and readpages handle the case when we want to read an
inlined file.

Signed-off-by: Tao Ma <boyu.mt@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

1 files changed, 7 insertions, 0 deletions

diff --git a/fs/ext4/xattr.h b/fs/ext4/xattr.h
index 7ae0d05156e3..646c9b9be8ed 100644
--- a/fs/ext4/xattr.h
+++ b/fs/ext4/xattr.h
@@ -139,6 +139,8 @@ extern int ext4_prepare_inline_data(handle_t *handle, struct inode *inode,
 extern int ext4_init_inline_data(handle_t *handle, struct inode *inode,
                                  unsigned int len);
 extern int ext4_destroy_inline_data(handle_t *handle, struct inode *inode);
+
+extern int ext4_readpage_inline(struct inode *inode, struct page *page);
 # else  /* CONFIG_EXT4_FS_XATTR */
 
 static inline int
@@ -255,6 +257,11 @@ static inline int ext4_destroy_inline_data(handle_t *handle,
 {
         return 0;
 }
+
+static inline int ext4_readpage_inline(struct inode *inode, struct page *page)
+{
+        return 0;
+}
 # endif  /* CONFIG_EXT4_FS_XATTR */
 
 #ifdef CONFIG_EXT4_FS_SECURITY