[RFC][PATCH 0/6] Enable multiple mounts of devpts
H. Peter Anvin
hpa at zytor.com
Mon Aug 4 18:37:18 PDT 2008
sukadev at us.ibm.com wrote:
> If devpts is mounted more than once, then '/dev/ptmx' must be a symlink
> to '/dev/pts/ptmx' and in each new devpts mount we must create the
> device node '/dev/pts/ptmx' [c, 5;2] by hand.
This should be auto-created. That also eliminates any need to support
the mknod system call.
> Appreciate comments on overall approach of my mapping from the inode
> to sb->s_fs_info to allocated_ptys and the hacky use of get_sb_nodev(),
> and also on the tweak to init_dev() (patch 6).
> User-space impact of /dev/ptmx symlink - Options are being
> discussed on mailing list (new mount option and config token,
> new fs name, etc)
> Remove even initial kernel mount of devpts ?
The initial kernel mount of devpts should be removed, since that
instance will never be accessible.
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