ext4: add normal write support for inline data

For a normal write case (not journalled write, not delayed
allocation), we write to the inline if the file is small and convert
it to an extent based file when the write is larger than the max
inline size.

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

1 files changed, 11 insertions, 0 deletions

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index c827e47d556c..9f4efc6c37ba 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -2018,8 +2018,19 @@ struct buffer_head *ext4_getblk(handle_t *, struct inode *,
                                                 ext4_lblk_t, int, int *);
 struct buffer_head *ext4_bread(handle_t *, struct inode *,
                                                 ext4_lblk_t, int, int *);
+int ext4_get_block_write(struct inode *inode, sector_t iblock,
+                         struct buffer_head *bh_result, int create);
 int ext4_get_block(struct inode *inode, sector_t iblock,
                                 struct buffer_head *bh_result, int create);
+int ext4_walk_page_buffers(handle_t *handle,
+                           struct buffer_head *head,
+                           unsigned from,
+                           unsigned to,
+                           int *partial,
+                           int (*fn)(handle_t *handle,
+                                     struct buffer_head *bh));
+int do_journal_get_write_access(handle_t *handle,
+                                struct buffer_head *bh);
 
 extern struct inode *ext4_iget(struct super_block *, unsigned long);
 extern int  ext4_write_inode(struct inode *, struct writeback_control *);