(2x NPROC plus slop) unless expclitly set. Use current constant value
(100) as a lower bound, as suggested by Chuck Cranor.
Move NPROC and other parameter definitions from param.c to param.h so
they are visible to vm/vm_map.h.
Systems with hand-tuned NPROC should now support that many processes.
- share_map in vm_map_object. UVM doesn't use share maps, so drop unused
partial support for them to simplify the code.
- is_main_map in vm_map. no longer needed once share maps are gone.
- vm_map_version_t. map versions are handled elsewhere in UVM.
the pathname of the swap device is saved into. add a char *swd_path
member to struct swapdev, that contains a copy of the pathname
(using malloc(9)). rename swapctl(2)'s SWAP_STATS to SWAP_OSTATS,
and add a new SWAP_STATS command (number). make swapctl(SWAP_STATS,
...) [new version] copy the path out. if COMPAT_13, also include
support for SWAP_OSTATS. also fix a minor bug in swapctl(2).
the point of this is that swapfiles are now shown in `swapctl -l'.
as with user-land programs, include files are installed by each directory
in the tree that has includes to install. (This allows more flexibility
as to what gets installed, makes 'partial installs' easier, and gives us
more options as to which machines' includes get installed at any given
time.) The old SYS_INCLUDES={symlinks,copies} behaviours are _both_
still supported, though at least one bug in the 'symlinks' case is
fixed by this change. Include files can't be build before installation,
so directories that have includes as targets (e.g. dev/pci) have to move
those targets into a different Makefile.
write protection. this stops data corruption where it was possible
to change the in-memory copy of an append-only file (but not the on-disk
copy). this is documented in NetBSD security advisory 1998-003. thanks
to darrenr, lukem, cgd, mycroft and mrg for this.
the new proc structure when performing a fork. This makes it much
easier to abort a fork operation and return an error if we run out
of KVA space.
The U-area pages are still wired down in {,u}vm_fork(), as before.
calling vm_pager_get() doesn't count as a "majflt" unless the pager
returns VM_PAGER_OK. when walking an object chain we can get VM_PAGER_FAIL
(indicating that the requested data does not reside in this object
and we must continue to walk the chain) -- we don't want to count this
as a majflt.
i also added code to count ru_minflt.
cgd