Re: [PATCH 6/6] fs: Introduce kern_mount_special() to mount special vfs

On Thu, Nov 27, 2008 at 12:32:59AM +0100, Eric Dumazet wrote:

This function arms a flag (MNT_SPECIAL) on the vfs, to avoid
refcounting on permanent system vfs.
Use this function for sockets, pipes, anonymous fds.

special is not a useful name for a flag, by definition everything that
needs a flag is special compared to the version that doesn't need a
flag.

The general idea of skippign the writer counts makes sense, but please
give it a descriptive name that explains the not unmountable thing.
And please kill your kern_mount wrapper and just set the flag manually.

Also I think it should be a superblock flag, not a mount flag as you
don't want thse to differ for multiple mounts of the same filesystem.