From 62a3a6644ddf92a268d68549e7fc824357bdd11e Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Fri, 23 Jun 2017 19:41:38 -0400 Subject: [PATCH] ext4: 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 Signed-off-by: Theodore Ts'o --- fs/ext4/file.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/fs/ext4/file.c b/fs/ext4/file.c index b5387eb60604..699517fbb867 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -296,13 +296,6 @@ static int ext4_file_mmap(struct file *file, struct vm_area_struct *vma) { struct inode *inode = file->f_mapping->host; - if (IS_ENCRYPTED(inode)) { - int err = fscrypt_get_encryption_info(inode); - if (err) - return 0; - if (!fscrypt_has_encryption_key(inode)) - return -ENOKEY; - } file_accessed(file); if (IS_DAX(file_inode(file))) { vma->vm_ops = &ext4_dax_vm_ops; -- 2.11.0