ext4: let ext4_rename handle inline dir
In case we rename a directory, ext4_rename has to read the dir block
and change its dotdot's information. The old ext4_rename encapsulated
the dir_block read into itself. So this patch adds a new function
ext4_get_first_dir_block() which gets the dir buffer information so
the ext4_rename can handle it properly. As it will also change the
parent inode number, we return the parent_de so that ext4_rename() can
handle it more easily.
ext4_find_entry is also changed so that the caller(rename) can tell
whether the found entry is an inlined one or not and journaling the
corresponding buffer head.
Signed-off-by: Tao Ma <boyu.mt@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c
index e5da458..fc36299 100644
--- a/fs/ext4/inline.c
+++ b/fs/ext4/inline.c
@@ -1424,6 +1424,21 @@
return ret;
}
+struct buffer_head *ext4_get_first_inline_block(struct inode *inode,
+ struct ext4_dir_entry_2 **parent_de,
+ int *retval)
+{
+ struct ext4_iloc iloc;
+
+ *retval = ext4_get_inode_loc(inode, &iloc);
+ if (*retval)
+ return NULL;
+
+ *parent_de = (struct ext4_dir_entry_2 *)ext4_raw_inode(&iloc)->i_block;
+
+ return iloc.bh;
+}
+
/*
* Try to create the inline data for the new dir.
* If it succeeds, return 0, otherwise return the error.