Re: RFC: deprecating/removing the legacy mode of devpts

From: Al Viro
Date: Wed Apr 11 2012 - 23:04:32 EST


On Wed, Apr 11, 2012 at 07:48:44PM -0700, H. Peter Anvin wrote:
> The symlink support is at least 3 years old, probably more.

DEVPTS_MULTIPLE_INSTANCES wasn't anywhere near mandatory all that time...
Kernel upgrade procedure that starts with "build the old kernel with
that option enabled, boot it, replace /dev/ptmx with a symlink, then
never try to boot earlier kernel images. Now you can safely upgrade
to current kernel" is the recipe for massive self-LARTs (and resulting
pitchfork crowds).
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