```
tmpfs: correct reported st_blocks/va_bytes
Previously the reported value did not accounted for the swapped out
pages.
```
```
uiomove_object: hide diagnostic under bootverbose
```
```
tmpfs: for used pages, account really allocated pages, instead of file sizes
This makes tmpfs size accounting correct for the sparce files.
PR: 223015
```
```
vm_pager: add method to veto page allocation
```
```
vm_pager: add methods for page insertion and removal notifications
```
```
Add swap_pager_total_pages()
```
```
tmpfs: make vm_object point to the tmpfs node instead of vnode
The vnode could be reclaimed and allocated again during the lifecycle of
the node, but the node cannot. Also, referencing the node would allow
to reach it and tmpfs mount data from the object, regardless of the
state of the possibly absent vnode.
Still use swp_tmpfs for back-pointer, instead of using handle. Use of
named swap objects would incur taking the sw_alloc_sx on node allocation
and deallocation.
swp_tmpfs is renamed to swp_priv to remove the last bit of tmpfs in vm/.
```
```
Add 'show tmpfs' ddb command
```
Tested by: pho