freebsd-dev/sys/vm
Alan Cox afaa41f6b8 On a fork allow read-only wired pages to be copy-on-write shared between the
parent and child processes.  Previously, we copied these pages even though
they are read only.  However, the reason for copying them is historical and
no longer exists.  In recent times, vm_map_protect() has developed the
ability to copy pages when write access is added to wired copy-on-write
pages.  So, in this case, copy-on-write sharing of wired pages is not to be
feared.  It is not going to lead to copy-on-write faults on wired memory.

Reviewed by:	kib
MFC after:	1 week
Sponsored by:	EMC / Isilon Storage Division
2014-05-13 13:20:23 +00:00
..
_vm_radix.h On all the architectures, avoid to preallocate the physical memory 2013-08-09 11:28:55 +00:00
default_pager.c Switch the vm_object mutex to be a rwlock. This will enable in the 2013-03-09 02:32:23 +00:00
device_pager.c Initialize paddr to handle the case of zero size. 2014-03-12 16:38:55 +00:00
memguard.c Rename global cnt to vm_cnt to avoid shadowing. 2014-03-22 10:26:09 +00:00
memguard.h Replace kernel virtual address space allocation with vmem. This provides 2013-08-07 06:21:20 +00:00
phys_pager.c The soft and hard busy mechanism rely on the vm object lock to work. 2013-08-09 11:11:11 +00:00
pmap.h The pmap function pmap_clear_reference() is no longer used. Remove it. 2013-09-20 04:30:18 +00:00
redzone.c Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. 2011-11-07 15:43:11 +00:00
redzone.h
sg_pager.c Different consumers of the struct vm_page abuse pageq member to keep 2013-08-10 17:36:42 +00:00
swap_pager.c Add sysctl OIDs showing the actual size and capacity of the swap zone. 2014-04-26 12:18:17 +00:00
swap_pager.h Do not map the swap i/o pbufs if the geom provider for the swap 2013-03-19 14:39:27 +00:00
uma_core.c After r251709, avoid a clang 3.4 warning about an unused static const 2014-02-14 17:47:18 +00:00
uma_dbg.c - Add a per-zone lock for zones without kegs. 2013-06-20 19:08:12 +00:00
uma_dbg.h
uma_int.h Implement soft pressure on UMA cache bucket sizes. 2013-11-19 10:05:53 +00:00
uma.h Create two public UMA_ZONE_PCPU zones: 64 bit sized and pointer sized. 2014-02-10 19:59:46 +00:00
vm_extern.h Merge the following changes from projects/bhyve_npt_pmap: 2013-09-20 17:06:49 +00:00
vm_fault.c Fix locking. The dst_object must remain locked on the retry of the 2014-05-11 18:07:07 +00:00
vm_glue.c Rename global cnt to vm_cnt to avoid shadowing. 2014-03-22 10:26:09 +00:00
vm_init.c Add a mmap flag (MAP_32BIT) on 64-bit platforms to request that a mapping use 2013-09-09 18:11:59 +00:00
vm_kern.c Add a mmap flag (MAP_32BIT) on 64-bit platforms to request that a mapping use 2013-09-09 18:11:59 +00:00
vm_kern.h - Add a statically allocated memguard arena since it is needed very early 2013-08-13 22:40:43 +00:00
vm_map.c On a fork allow read-only wired pages to be copy-on-write shared between the 2014-05-13 13:20:23 +00:00
vm_map.h Add a mmap flag (MAP_32BIT) on 64-bit platforms to request that a mapping use 2013-09-09 18:11:59 +00:00
vm_meter.c Rename global cnt to vm_cnt to avoid shadowing. 2014-03-22 10:26:09 +00:00
vm_mmap.c msync(2) must return ENOMEM and not EINVAL when the address is outside the 2014-05-07 08:38:02 +00:00
vm_object.c Rename global cnt to vm_cnt to avoid shadowing. 2014-03-22 10:26:09 +00:00
vm_object.h On all the architectures, avoid to preallocate the physical memory 2013-08-09 11:28:55 +00:00
vm_page.c Rename global cnt to vm_cnt to avoid shadowing. 2014-03-22 10:26:09 +00:00
vm_page.h Since the introduction of the popmap to reservations in r259999, there is 2013-12-31 18:25:15 +00:00
vm_pageout.c Prior to r254304, a separate function, vm_pageout_page_stats(), was used to 2014-05-06 03:42:04 +00:00
vm_pageout.h Move what remains of vm/vm_contig.c into vm/vm_pageout.c, where similar 2012-07-18 05:21:34 +00:00
vm_pager.c - Add a general purpose resource allocator, vmem, from NetBSD. It was 2013-06-28 03:51:20 +00:00
vm_pager.h - Add a general purpose resource allocator, vmem, from NetBSD. It was 2013-06-28 03:51:20 +00:00
vm_param.h Rename global cnt to vm_cnt to avoid shadowing. 2014-03-22 10:26:09 +00:00
vm_phys.c For the VM_PHYSSEG_DENSE case, checking the requested range to fall 2014-04-29 18:42:37 +00:00
vm_phys.h Rename global cnt to vm_cnt to avoid shadowing. 2014-03-22 10:26:09 +00:00
vm_radix.c Rename global cnt to vm_cnt to avoid shadowing. 2014-03-22 10:26:09 +00:00
vm_radix.h Eliminate a redundant parameter to vm_radix_replace(). 2013-12-08 20:07:02 +00:00
vm_reserv.c Add "popmap" assertions: The page being freed isn't already free, and the 2013-12-29 04:54:52 +00:00
vm_reserv.h Refactor vm_page_alloc()'s interactions with vm_reserv_alloc_page() and 2013-05-12 16:50:18 +00:00
vm_unix.c - Improve readability of sys_obreak(). 2013-01-11 09:58:35 +00:00
vm_zeroidle.c Rename global cnt to vm_cnt to avoid shadowing. 2014-03-22 10:26:09 +00:00
vm.h rename scheduler->swapper and SI_SUB_RUN_SCHEDULER->SI_SUB_LAST 2013-07-24 09:45:31 +00:00
vnode_pager.c Rename global cnt to vm_cnt to avoid shadowing. 2014-03-22 10:26:09 +00:00
vnode_pager.h Account the writeable shared mappings backed by file in the vnode 2012-02-23 21:07:16 +00:00