The fscrypt_match_name stub macro always returns 1, causing every
directory entry to match regardless of name. Also d_splice_alias is
a no-op that returns NULL, so the inode found by ext4_lookup is
never associated with the dentry.
Fix fscrypt_match_name to properly compare name lengths and contents.
Fix d_splice_alias, d_instantiate and d_instantiate_new to set
d->d_inode.
Co-developed-by: Claude <noreply@anthropic.com>
Signed-off-by: Simon Glass <simon.glass@canonical.com>
725c0ed93b