Pass resize parameter to vm_map_entry_resize_free

[dougm]

Summary

This is a small piece broken off of the change under review at D19826. Passing a parameter to vm_map_entry_resize_free that describes the amount of resizing reduces the number of functions changing the vm_map invariants regarding the max_free field of map entries.

Test Plan

I've tested with a test program that pounds the vm_map and seen no obvious performance impact from this change.

[dougm]

-U99999

[kib]

Other than the note about if()s, this looks fine.

vm_map.c

4325 ↗

(On Diff #57701)

I find this nesting of if()s cleaner than repeated condition in your variant. It is clear that we do some cleanup, and the kind of cleanup depends on gap_deleted.

[dougm]

Restore indentation. Wrap long line.

[markj]

vm_map.c

4353 ↗

(On Diff #57703)

Did you delete the wrong line?

[dougm]

Fix the conflict with the old patch correctly, this time.

[dougm]

vm_map.c

4353 ↗

(On Diff #57703)

Yep.

[kib]

vm_map.c

1254 ↗

(On Diff #57704)

I think the type should be vm_size_t but I see that I myself used it inconsistently.