[Bug 275436] tmpfs does not honor memory limits on writes

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=275436

Konstantin Belousov <kib@FreeBSD.org> changed:

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--- Comment #1 from Konstantin Belousov <kib@FreeBSD.org> ---
I do not think this is a right approach.  Free pages/free target from the VM
subsystem is not what people usually think about it.  The numbers only direct
the pagedaemon activity, they are not indicative in any other way.  If the
system has enough swap and inactive pages, they can be converted into reusable
pages without causing OOM/ENOMEM etc.

Similarly, I do not think it is right to do any limiting on tmpfs file resize.
Tmpfs supports holes, and there is no reason to block that.

Tmpfs already has the mechanism to count actually allocated pages and to clamp
the amount of pages allocated to specific mount.  It it the right thing to do
IMO.
Why wouldn't you use it?

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