• Theodore Ts'o's avatar
    ext4: check for ext[23] file system features when mounting as ext[23] · 2035e776
    Theodore Ts'o authored
    Provide better emulation for ext[23] mode by enforcing that the file
    system does not have any unsupported file system features as defined
    by ext[23] when emulating the ext[23] file system driver when
    CONFIG_EXT4_USE_FOR_EXT23 is defined.
    
    This causes the file system type information in /proc/mounts to be
    correct for the automatically mounted root file system.  This also
    means that "mount -t ext2 /dev/sda /mnt" will fail if /dev/sda
    contains an ext3 or ext4 file system, just as one would expect if the
    original ext2 file system driver were in use.
    Signed-off-by: default avatar"Theodore Ts'o" <tytso@mit.edu>
    2035e776
ext4.h 74.2 KB