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    ext4: Add feature set check helper for mount & remount paths · a13fb1a4
    Eric Sandeen 提交于
    A user reported that although his root ext4 filesystem was mounting
    fine, other filesystems would not mount, with the:
    
    "Filesystem with huge files cannot be mounted RDWR without CONFIG_LBDAF"
    
    error on his 32-bit box built without CONFIG_LBDAF.  This is because
    the test at mount time for this situation was not being re-checked
    on remount, and the normal boot process makes an ro->rw transition,
    so this was being missed.
    
    Refactor to make a common helper function to test the filesystem
    features against the type of mount request (RO vs. RW) so that we 
    stay consistent.
    
    Addresses Red-Hat-Bugzilla: #517650
    Signed-off-by: NEric Sandeen <sandeen@redhat.com>
    Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
    a13fb1a4
super.c 112.5 KB