2 fs/ext4/ext4.h | 23 ++++++++++++++++++++++-
3 fs/ext4/ext4_jbd2.c | 1 +
4 fs/ext4/ialloc.c | 3 ++-
5 fs/ext4/inode.c | 15 +++++++++++++++
6 fs/ext4/namei.c | 9 ++++++---
7 fs/ext4/super.c | 10 ++--------
8 5 files changed, 48 insertions(+), 13 deletions(-)
10 diff -ur a/fs/ext4/ext4.h b/fs/ext4/ext4.h
11 --- a/fs/ext4/ext4.h 2021-06-28 08:45:39.093954644 -0600
12 +++ b/fs/ext4/ext4.h 2021-06-28 08:46:06.913523572 -0600
15 #define NEXT_ORPHAN(inode) EXT4_I(inode)->i_dtime
17 +#define JOURNAL_START_HAS_3ARGS 1
20 * Codes for operating systems
22 @@ -1995,7 +1997,21 @@
26 -EXTN_FEATURE_FUNCS(4)
27 +static inline bool ext4_has_unknown_ext4_compat_features(struct super_block *sb)
29 + return ((EXT4_SB(sb)->s_es->s_feature_compat &
30 + cpu_to_le32(~EXT4_FEATURE_COMPAT_SUPP)) != 0);
32 +static inline bool ext4_has_unknown_ext4_ro_compat_features(struct super_block *sb)
34 + return ((EXT4_SB(sb)->s_es->s_feature_ro_compat &
35 + cpu_to_le32(~EXT4_FEATURE_RO_COMPAT_SUPP)) != 0);
37 +static inline bool ext4_has_unknown_ext4_incompat_features(struct super_block *sb)
39 + return ((EXT4_SB(sb)->s_es->s_feature_incompat &
40 + cpu_to_le32(~EXT4_FEATURE_INCOMPAT_SUPP)) != 0);
43 static inline bool ext4_has_compat_features(struct super_block *sb)
45 @@ -3399,6 +3415,13 @@
46 #define EXT_MAX_BLOCKS 0xffffffff
48 extern void ext4_ext_tree_init(handle_t *handle, struct inode *inode);
49 +extern struct buffer_head *ext4_read_inode_bitmap(struct super_block *sb,
50 + ext4_group_t block_group);
51 +extern void ext4_inc_count(handle_t *handle, struct inode *inode);
52 +extern void ext4_dec_count(handle_t *handle, struct inode *inode);
53 +extern struct buffer_head *ext4_append(handle_t *handle,
54 + struct inode *inode,
55 + ext4_lblk_t *block);
56 extern int ext4_ext_index_trans_blocks(struct inode *inode, int extents);
57 extern int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
58 struct ext4_map_blocks *map, int flags);
59 diff -ur a/fs/ext4/ext4_jbd2.c b/fs/ext4/ext4_jbd2.c
60 --- a/fs/ext4/ext4_jbd2.c 2021-06-28 08:45:38.905957595 -0600
61 +++ b/fs/ext4/ext4_jbd2.c 2021-06-28 08:49:18.306817373 -0600
63 revoke_cred = max(0, revoke_cred - handle->h_revoke_credits);
64 return ext4_journal_extend(handle, extend_cred, revoke_cred);
66 +EXPORT_SYMBOL(__ext4_journal_ensure_credits);
68 static void ext4_journal_abort_handle(const char *caller, unsigned int line,
70 diff -ur a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
71 --- a/fs/ext4/ialloc.c 2021-06-28 08:45:38.993956213 -0600
72 +++ b/fs/ext4/ialloc.c 2021-06-28 08:46:06.917523511 -0600
75 * Return buffer_head of bitmap on success, or an ERR_PTR on error.
77 -static struct buffer_head *
79 ext4_read_inode_bitmap(struct super_block *sb, ext4_group_t block_group)
81 struct ext4_group_desc *desc;
86 +EXPORT_SYMBOL(ext4_read_inode_bitmap);
89 * NOTE! When we get the inode, we're the only people
90 diff -ur a/fs/ext4/inode.c b/fs/ext4/inode.c
91 --- a/fs/ext4/inode.c 2021-06-28 08:45:39.069955021 -0600
92 +++ b/fs/ext4/inode.c 2021-06-28 08:46:06.921523449 -0600
93 @@ -6088,3 +6088,18 @@
97 +EXPORT_SYMBOL(ext4_map_blocks);
98 +EXPORT_SYMBOL(ext4_truncate);
99 +EXPORT_SYMBOL(ext4_iget);
100 +EXPORT_SYMBOL(ext4_bread);
101 +EXPORT_SYMBOL(ext4_itable_unused_count);
102 +EXPORT_SYMBOL(ext4_force_commit);
103 +EXPORT_SYMBOL(__ext4_mark_inode_dirty);
104 +EXPORT_SYMBOL(ext4_get_group_desc);
105 +EXPORT_SYMBOL(__ext4_journal_get_write_access);
106 +EXPORT_SYMBOL(__ext4_journal_start_sb);
107 +EXPORT_SYMBOL(__ext4_journal_stop);
108 +EXPORT_SYMBOL(__ext4_handle_dirty_metadata);
109 +EXPORT_SYMBOL(__ext4_std_error);
110 +EXPORT_SYMBOL(ext4fs_dirhash);
111 +EXPORT_SYMBOL(ext4_get_inode_loc);
112 diff -ur a/fs/ext4/namei.c b/fs/ext4/namei.c
113 --- a/fs/ext4/namei.c 2021-06-28 08:45:39.093954644 -0600
114 +++ b/fs/ext4/namei.c 2021-06-28 08:46:06.921523449 -0600
116 #define NAMEI_RA_BLOCKS 4
117 #define NAMEI_RA_SIZE (NAMEI_RA_CHUNKS * NAMEI_RA_BLOCKS)
119 -static struct buffer_head *ext4_append(handle_t *handle,
120 +struct buffer_head *ext4_append(handle_t *handle,
128 +EXPORT_SYMBOL(ext4_append);
131 #define assert(test) J_ASSERT(test)
132 @@ -2584,23 +2585,25 @@
133 * for checking S_ISDIR(inode) (since the INODE_INDEX feature will not be set
134 * on regular files) and to avoid creating huge/slow non-HTREE directories.
136 -static void ext4_inc_count(handle_t *handle, struct inode *inode)
137 +void ext4_inc_count(handle_t *handle, struct inode *inode)
141 (inode->i_nlink > EXT4_LINK_MAX || inode->i_nlink == 2))
144 +EXPORT_SYMBOL(ext4_inc_count);
147 * If a directory had nlink == 1, then we should let it be 1. This indicates
148 * directory has >EXT4_LINK_MAX subdirs.
150 -static void ext4_dec_count(handle_t *handle, struct inode *inode)
151 +void ext4_dec_count(handle_t *handle, struct inode *inode)
153 if (!S_ISDIR(inode->i_mode) || inode->i_nlink > 2)
156 +EXPORT_SYMBOL(ext4_dec_count);
160 diff -ur a/fs/ext4/super.c b/fs/ext4/super.c
161 --- a/fs/ext4/super.c 2021-06-28 08:45:38.909957532 -0600
162 +++ b/fs/ext4/super.c 2021-06-28 08:46:06.921523449 -0600
165 es->s_state |= cpu_to_le16(EXT4_ERROR_FS);
166 ext4_update_tstamp(es, s_last_error_time);
167 - strncpy(es->s_last_error_func, func, sizeof(es->s_last_error_func));
168 + strlcpy(es->s_last_error_func, func, sizeof(es->s_last_error_func));
169 es->s_last_error_line = cpu_to_le32(line);
170 es->s_last_error_ino = cpu_to_le32(ino);
171 es->s_last_error_block = cpu_to_le64(block);
173 if (!es->s_first_error_time) {
174 es->s_first_error_time = es->s_last_error_time;
175 es->s_first_error_time_hi = es->s_last_error_time_hi;
176 - strncpy(es->s_first_error_func, func,
177 + strlcpy(es->s_first_error_func, func,
178 sizeof(es->s_first_error_func));
179 es->s_first_error_line = cpu_to_le32(line);
180 es->s_first_error_ino = es->s_last_error_ino;
181 @@ -6382,16 +6382,12 @@
182 err = init_inodecache();
185 - register_as_ext3();
186 - register_as_ext2();
187 err = register_filesystem(&ext4_fs_type);
193 - unregister_as_ext2();
194 - unregister_as_ext3();
195 destroy_inodecache();
198 @@ -6414,8 +6410,6 @@
199 static void __exit ext4_exit_fs(void)
201 ext4_destroy_lazyinit_thread();
202 - unregister_as_ext2();
203 - unregister_as_ext3();
204 unregister_filesystem(&ext4_fs_type);
205 destroy_inodecache();