In a typical Linux file system, where is the file owner information stored?

The file owner information in a typical Linux file system is stored in the inode. An inode is a data structure used to represent a file or a directory. It contains essential metadata about the file, including the file's owner (user ID and group ID), access permissions, timestamps, and pointers to the actual data blocks on the disk where the file content is stored.

The dentry, on the other hand, is used to cache the directory structure and has no ownership information of its own; rather, it serves as a mechanism for name resolution and linking names to inodes. The superblock contains metadata about the file system itself, such as its size, type, and status, but not per-file ownership details. The $MFT refers to the Master File Table used in NTFS (Windows file systems) and does not apply to Linux file systems. As such, the inode is the correct answer for where the file owner information is stored in a typical Linux file system.