Re: tty's use of file_list_lock and file_move

[Alan Cox]

Ar Llu, 2006-07-10 am 14:09 -0400, ysgrifennodd Jon Smirl:
> > We hold the ->files->file_lock because we have to walk other processes
> > file tables in a safe fashion in SAK. That one is fairly clear.
> 
> What if do_SAK did something like this?
> 
> copy the tty struct to new_tty
> NULL out the file list in new_tty
> insert new_tty into the array tracking tty minors so that open will
> find the new one

SAK isn't locking against the tty layer ,its locking against the VFS
when it does htis


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