ext4: add journalled write support for inline data

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

1 files changed, 24 insertions, 0 deletions

diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c
index 320ff6fe5d8c..01274b1e7d40 100644
--- a/fs/ext4/inline.c
+++ b/fs/ext4/inline.c
@@ -747,6 +747,30 @@ out:
         return copied;
 }
 
+struct buffer_head *
+ext4_journalled_write_inline_data(struct inode *inode,
+                                  unsigned len,
+                                  struct page *page)
+{
+        int ret;
+        void *kaddr;
+        struct ext4_iloc iloc;
+
+        ret = ext4_get_inode_loc(inode, &iloc);
+        if (ret) {
+                ext4_std_error(inode->i_sb, ret);
+                return NULL;
+        }
+
+        down_write(&EXT4_I(inode)->xattr_sem);
+        kaddr = kmap_atomic(page);
+        ext4_write_inline_data(inode, &iloc, kaddr, 0, len);
+        kunmap_atomic(kaddr);
+        up_write(&EXT4_I(inode)->xattr_sem);
+
+        return iloc.bh;
+}
+
 
 int ext4_destroy_inline_data(handle_t *handle, struct inode *inode)
 {