4.5-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Chao Yu <[email protected]>

commit ed3360abbc0412f32c398e1c58887d74f3d04225 upstream.

This patch syncs f2fs with commit 6bc445e0ff44 ("ext4 crypto: make
sure the encryption info is initialized on opendir(2)") from ext4.

Signed-off-by: Theodore Ts'o <[email protected]>
Signed-off-by: Chao Yu <[email protected]>
Signed-off-by: Jaegeuk Kim <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

---
 fs/f2fs/dir.c |    8 ++++++++
 1 file changed, 8 insertions(+)

--- a/fs/f2fs/dir.c
+++ b/fs/f2fs/dir.c
@@ -892,11 +892,19 @@ out:
        return err;
 }
 
+static int f2fs_dir_open(struct inode *inode, struct file *filp)
+{
+       if (f2fs_encrypted_inode(inode))
+               return f2fs_get_encryption_info(inode) ? -EACCES : 0;
+       return 0;
+}
+
 const struct file_operations f2fs_dir_operations = {
        .llseek         = generic_file_llseek,
        .read           = generic_read_dir,
        .iterate        = f2fs_readdir,
        .fsync          = f2fs_sync_file,
+       .open           = f2fs_dir_open,
        .unlocked_ioctl = f2fs_ioctl,
 #ifdef CONFIG_COMPAT
        .compat_ioctl   = f2fs_compat_ioctl,


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