quoted

quoted

quoted

quoted

quoted

Yes, that's right direction, I think. Currently, shmem_set_policy()
can't handle
nonlinear mapping.

I've been mulling for some time to just remove non linear mappings.
AFAIK they were only useful on 32bit and are obsolete and could be
emulated with VMAs instead.

I agree. It is only userful on 32bit and current enterprise users don't
use
32bit anymore. So, I don't think emulated by vmas cause user visible
issue.

I wish this was true, there are a lot of systems out there still running
32
bit linux, even on 64 bit capible hardware. This is especially true in
enterprises where they have either homegrown or proprietary software that
isn't 64 bit clean.

32 bit binaries (and entire distros) run fine under 64 bit kernels.

unfortunantly, not quite 100% of the time. It's very good, but the automount
bug a month or so ago is an example of how you can run into rare problems.
Many "enterprise" systems are not willing to risk it.

Then we can remove a feature safely. Risk not taker continue to uses old distro
kernel. And some years after, distros discontinue to support 32bit. And then,
problem will vanish automatically.

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>