1 Index: linux-3.10.0-123.13.2.el7.x86_64/fs/ext4/ext4.h
2 ===================================================================
3 --- linux-3.10.0-123.13.2.el7.x86_64.orig/fs/ext4/ext4.h
4 +++ linux-3.10.0-123.13.2.el7.x86_64/fs/ext4/ext4.h
5 @@ -2145,6 +2145,19 @@ extern int ext4_orphan_add(handle_t *, s
6 extern int ext4_orphan_del(handle_t *, struct inode *);
7 extern int ext4_htree_fill_tree(struct file *dir_file, __u32 start_hash,
8 __u32 start_minor_hash, __u32 *next_hash);
9 +extern struct inode *ext4_create_inode(handle_t *handle,
10 + struct inode * dir, int mode);
11 +extern int ext4_add_entry(handle_t *handle, struct dentry *dentry,
12 + struct inode *inode);
13 +extern int ext4_delete_entry(handle_t *handle, struct inode * dir,
14 + struct ext4_dir_entry_2 * de_del,
15 + struct buffer_head * bh);
16 +extern struct buffer_head * ext4_find_entry(struct inode *dir,
17 + const struct qstr *d_name,
18 + struct ext4_dir_entry_2 ** res_dir,
20 +extern int ext4_add_dot_dotdot(handle_t *handle, struct inode *dir,
21 + struct inode *inode);
22 extern int search_dir(struct buffer_head *bh,
25 Index: linux-3.10.0-123.13.2.el7.x86_64/fs/ext4/namei.c
26 ===================================================================
27 --- linux-3.10.0-123.13.2.el7.x86_64.orig/fs/ext4/namei.c
28 +++ linux-3.10.0-123.13.2.el7.x86_64/fs/ext4/namei.c
29 @@ -1211,7 +1211,7 @@ static int is_dx_internal_node(struct in
30 * The returned buffer_head has ->b_count elevated. The caller is expected
31 * to brelse() it when appropriate.
33 -static struct buffer_head * ext4_find_entry (struct inode *dir,
34 +struct buffer_head * ext4_find_entry(struct inode *dir,
35 const struct qstr *d_name,
36 struct ext4_dir_entry_2 **res_dir,
38 @@ -1355,6 +1355,7 @@ cleanup_and_exit:
39 brelse(bh_use[ra_ptr]);
42 +EXPORT_SYMBOL(ext4_find_entry);
44 static struct buffer_head * ext4_dx_find_entry(struct inode *dir, const struct qstr *d_name,
45 struct ext4_dir_entry_2 **res_dir, int *err)
46 @@ -1903,8 +1904,8 @@ static int make_indexed_dir(handle_t *ha
47 * may not sleep between calling this and putting something into
48 * the entry, as someone else might have used it while you slept.
50 -static int ext4_add_entry(handle_t *handle, struct dentry *dentry,
51 - struct inode *inode)
52 +int ext4_add_entry(handle_t *handle, struct dentry *dentry,
53 + struct inode *inode)
55 struct inode *dir = dentry->d_parent->d_inode;
56 struct buffer_head *bh;
57 @@ -1979,6 +1980,7 @@ static int ext4_add_entry(handle_t *hand
58 ext4_set_inode_state(inode, EXT4_STATE_NEWENTRY);
61 +EXPORT_SYMBOL(ext4_add_entry);
64 * Returns 0 for success, or a negative error value
65 @@ -2165,7 +2167,7 @@ int ext4_generic_delete_entry(handle_t *
69 -static int ext4_delete_entry(handle_t *handle,
70 +int ext4_delete_entry(handle_t *handle,
72 struct ext4_dir_entry_2 *de_del,
73 struct buffer_head *bh)
74 @@ -2206,7 +2208,7 @@ out:
75 ext4_std_error(dir->i_sb, err);
79 +EXPORT_SYMBOL(ext4_delete_entry);
81 * DIR_NLINK feature is set if 1) nlinks > EXT4_LINK_MAX or 2) nlinks == 2,
82 * since this indicates that nlinks count was previously 1.
83 @@ -2253,6 +2255,28 @@ static int ext4_add_nondir(handle_t *han
87 + /* Return locked inode, then the caller can modify the inode's states/flags
88 + * before others finding it. The caller should unlock the inode by itself. */
89 +struct inode * ext4_create_inode(handle_t *handle, struct inode * dir, int mode)
91 + struct inode *inode;
93 + inode = ext4_new_inode(handle, dir, mode, NULL, 0, NULL);
94 + if (!IS_ERR(inode)) {
95 + if (S_ISCHR(mode) || S_ISBLK(mode) || S_ISFIFO(mode)) {
96 +#ifdef CONFIG_LDISKFS_FS_XATTR
97 + inode->i_op = &ext4_special_inode_operations;
100 + inode->i_op = &ext4_file_inode_operations;
101 + inode->i_fop = &ext4_file_operations;
102 + ext4_set_aops(inode);
107 +EXPORT_SYMBOL(ext4_create_inode);
110 * By the time this is called, we already have created
111 * the directory cache entry for the new file, but it
112 @@ -2402,6 +2426,23 @@ out:
116 +/* Initialize @inode as a subdirectory of @dir, and add the
117 + * "." and ".." entries into the first directory block. */
118 +int ext4_add_dot_dotdot(handle_t *handle, struct inode * dir,
119 + struct inode *inode)
121 + if (IS_ERR(handle))
122 + return PTR_ERR(handle);
124 + if (IS_DIRSYNC(dir))
125 + ext4_handle_sync(handle);
127 + inode->i_op = &ext4_dir_inode_operations.ops;
128 + inode->i_fop = &ext4_dir_operations;
129 + return ext4_init_new_dir(handle, dir, inode);
131 +EXPORT_SYMBOL(ext4_add_dot_dotdot);
133 static int ext4_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)