ext4 crypto: export ext4_empty_dir()

Required for future encryption xattr changes.

Signed-off-by: Michael Halcrow <mhalcrow@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

2 files changed, 7 insertions, 5 deletions

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index e1683829b2b5..180111de2302 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -2199,6 +2199,7 @@ extern int ext4_generic_delete_entry(handle_t *handle,
                                      void *entry_buf,
                                      int buf_size,
                                      int csum_size);
+extern int ext4_empty_dir(struct inode *inode);
 
 /* resize.c */
 extern int ext4_group_add(struct super_block *sb,
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 23a0b9bf822d..0dbd2d2937f7 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -2457,7 +2457,7 @@ out_stop:
 /*
  * routine to check that the specified directory is empty (for rmdir)
  */
-static int empty_dir(struct inode *inode)
+int ext4_empty_dir(struct inode *inode)
 {
         unsigned int offset;
         struct buffer_head *bh;
@@ -2725,7 +2725,7 @@ static int ext4_rmdir(struct inode *dir, struct dentry *dentry)
                 goto end_rmdir;
 
         retval = -ENOTEMPTY;
-        if (!empty_dir(inode))
+        if (!ext4_empty_dir(inode))
                 goto end_rmdir;
 
         handle = ext4_journal_start(dir, EXT4_HT_DIR,
@@ -3285,7 +3285,7 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry,
         if (S_ISDIR(old.inode->i_mode)) {
                 if (new.inode) {
                         retval = -ENOTEMPTY;
-                        if (!empty_dir(new.inode))
+                        if (!ext4_empty_dir(new.inode))
                                 goto end_rename;
                 } else {
                         retval = -EMLINK;
@@ -3359,8 +3359,9 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry,
 
                 ext4_dec_count(handle, old.dir);
                 if (new.inode) {
-                        /* checked empty_dir above, can't have another parent,
-                         * ext4_dec_count() won't work for many-linked dirs */
+                        /* checked ext4_empty_dir above, can't have another
+                         * parent, ext4_dec_count() won't work for many-linked
+                         * dirs */
                         clear_nlink(new.inode);
                 } else {
                         ext4_inc_count(handle, new.dir);