freebsd-nq/sys/amd64
John Dyson eaf13dd73a Change the busy page mgmt, so that when pages are freed, they
MUST be PG_BUSY.  It is bogus to free a page that isn't busy,
because it is in a state of being "unavailable" when being
freed.  The additional advantage is that the page_remove code
has a better cross-check that the page should be busy and
unavailable for other use.  There were some minor problems
with the collapse code, and this plugs those subtile "holes."

Also, the vfs_bio code wasn't checking correctly for PG_BUSY
pages.  I am going to develop a more consistant scheme for
grabbing pages, busy or otherwise.  For now, we are stuck
with the current morass.
1998-01-31 11:56:53 +00:00
..
amd64 Change the busy page mgmt, so that when pages are freed, they 1998-01-31 11:56:53 +00:00
conf Make all file-system (MFS, FFS, NFS, LFS, DEVFS) related option new-style. 1998-01-24 02:54:56 +00:00
include Undo previous commit. The cpuid symbol has been already used by SMP 1998-01-25 23:45:41 +00:00
isa Make the debug options new-style. 1998-01-31 07:23:16 +00:00
pci Make the class code checks in function pci_cfgcheck less strict. 1997-12-20 09:04:25 +00:00
Makefile