ubifs: don't bother checking for encryption key in ->mmap()

Since only an open file can be mmap'ed, and we only allow open()ing an encrypted file when its key is available, there is no need to check for the key again before permitting each mmap(). Signed-off-by: Eric Biggers <[email protected]> Acked-by: Richard Weinberger <[email protected]> Signed-off-by: Richard Weinberger <[email protected]>
ambv · Jul 5, 2017 · af65936 · af65936
1 parent 4afb999
commit af65936
Showing 1 changed file with 0 additions and 9 deletions.
diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
@@ -1615,15 +1615,6 @@ static const struct vm_operations_struct ubifs_file_vm_ops = {
 static int ubifs_file_mmap(struct file *file, struct vm_area_struct *vma)
 {
 	int err;
-	struct inode *inode = file->f_mapping->host;
-
-	if (ubifs_crypt_is_encrypted(inode)) {
-		err = fscrypt_get_encryption_info(inode);
-		if (err)
-			return -EACCES;
-		if (!fscrypt_has_encryption_key(inode))
-			return -ENOKEY;
-	}
 
 	err = generic_file_mmap(file, vma);
 	if (err)