vm_object: Add wrapper for bumping generation counter

[markj]

sys/vm/vm_object.c

2344

Where is this used? I can't find it in the rest of the patch stack.

Why is it ever necessary to bump the counter by more than 1? Consumers (should) only care about whether it changed relative to a previously loaded value, and not about the magnitude of the difference.

[bnovkov]

sys/vm/vm_object.c

2344

Where is this used? I can't find it in the rest of the patch stack.

It is used in the vm_radixdone's batch counterpart.

Why is it ever necessary to bump the counter by more than 1? Consumers (should) only care about whether it changed relative to a previously loaded value, and not about the magnitude of the difference.

I agree with you on this, but I eventually opted for replicating the behavior of calling vm_page_alloc in a loop, just to avoid inadvertently breaking something unrelated to this change.

However, seeing as you pretty much confirmed that this does not matter I'll go ahead and drop the review, thanks!