Jeff Roberson a808177864 Add a deferred free mechanism for freeing swap space that does not require ... an exclusive object lock. Previously swap space was freed on a best effort basis when a page that had valid swap was dirtied, thus invalidating the swap copy. This may be done inconsistently and requires the object lock which is not always convenient. Instead, track when swap space is present. The first dirty is responsible for deleting space or setting PGA_SWAP_FREE which will trigger background scans to free the swap space. Simplify the locking in vm_fault_dirty() now that we can reliably identify the first dirty. Discussed with: alc, kib, markj Differential Revision: https://reviews.freebsd.org/D22654		2019-12-15 03:15:06 +00:00
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_vm_radix.h	sys: general adoption of SPDX licensing ID tags.	2017-11-27 15:23:17 +00:00
default_pager.c	SPDX: wrong license.	2017-11-30 15:45:42 +00:00
device_pager.c	(4/6) Protect page valid with the busy lock.	2019-10-15 03:45:41 +00:00
memguard.c	Introduce vm_page_astate.	2019-12-10 18:14:50 +00:00
memguard.h	sys: general adoption of SPDX licensing ID tags.	2017-11-27 15:23:17 +00:00
phys_pager.c	(4/6) Protect page valid with the busy lock.	2019-10-15 03:45:41 +00:00
pmap.h	Remove page locking from pmap_mincore().	2019-10-16 22:03:27 +00:00
redzone.c	sys: general adoption of SPDX licensing ID tags.	2017-11-27 15:23:17 +00:00
redzone.h	sys: general adoption of SPDX licensing ID tags.	2017-11-27 15:23:17 +00:00
sg_pager.c	(4/6) Protect page valid with the busy lock.	2019-10-15 03:45:41 +00:00
swap_pager.c	Add a deferred free mechanism for freeing swap space that does not require	2019-12-15 03:15:06 +00:00
swap_pager.h	sys: further adoption of SPDX licensing ID tags.	2017-11-20 19:43:44 +00:00
uma_core.c	uma dbg: flexible size for slab debug bitset too	2019-12-14 05:21:56 +00:00
uma_dbg.c	Fix compilation failures on different arches that have vm_machdep.c not	2019-01-15 19:33:47 +00:00
uma_dbg.h	sys: general adoption of SPDX licensing ID tags.	2017-11-27 15:23:17 +00:00
uma_int.h	uma dbg: flexible size for slab debug bitset too	2019-12-14 05:21:56 +00:00
uma.h	Handle large mallocs by going directly to kmem. Taking a detour through	2019-11-29 03:14:10 +00:00
vm_domainset.c	Add a !NUMA definition for vm_domainset_iter_policy_ref_init().	2018-10-24 17:09:20 +00:00
vm_domainset.h	Refactor domainset iterators for use by malloc(9) and UMA.	2018-10-23 16:35:58 +00:00
vm_extern.h	Improve MD page fault handlers.	2019-09-27 18:43:36 +00:00
vm_fault.c	Add a deferred free mechanism for freeing swap space that does not require	2019-12-15 03:15:06 +00:00
vm_glue.c	vm: fix sysctl vm.kstack_cache_size change report	2019-12-07 17:28:41 +00:00
vm_init.c	Do not reserve KVA for paging bufs in vm_ksubmap_init(), since now	2019-01-16 20:14:16 +00:00
vm_kern.c	Apply mapping protections to preloaded kernel modules on amd64.	2019-10-18 13:56:45 +00:00
vm_kern.h	Do not reserve KVA for paging bufs in vm_ksubmap_init(), since now	2019-01-16 20:14:16 +00:00
vm_map.c	Slightly optimize locking in vm_map_copy_swap_entry(). Anonymous objects	2019-12-15 02:02:27 +00:00
vm_map.h	Revert r355505. The code that it allowed to compile has been removed.	2019-12-09 05:09:46 +00:00
vm_meter.c	Simplify anonymous memory handling with an OBJ_ANON flag. This eliminates	2019-11-19 23:19:43 +00:00
vm_mmap.c	Introduce vm_page_astate.	2019-12-10 18:14:50 +00:00
vm_object.c	Introduce vm_page_astate.	2019-12-10 18:14:50 +00:00
vm_object.h	Store the bottom of the shadow chain in OBJ_ANON object->handle member.	2019-12-01 20:43:04 +00:00
vm_page.c	Add a deferred free mechanism for freeing swap space that does not require	2019-12-15 03:15:06 +00:00
vm_page.h	Add a deferred free mechanism for freeing swap space that does not require	2019-12-15 03:15:06 +00:00
vm_pageout.c	Add a deferred free mechanism for freeing swap space that does not require	2019-12-15 03:15:06 +00:00
vm_pageout.h	Fix OOM handling of some corner cases.	2019-08-16 09:43:49 +00:00
vm_pagequeue.h	Simplify vm_pageout_init_domain() and add a "big picture" comment.	2019-11-22 16:31:43 +00:00
vm_pager.c	Add couple more assertions to vm_pager_assert_in(). The bogus page is	2019-10-25 16:59:54 +00:00
vm_pager.h	Add a deferred free mechanism for freeing swap space that does not require	2019-12-15 03:15:06 +00:00
vm_param.h	Improve MD page fault handlers.	2019-09-27 18:43:36 +00:00
vm_phys.c	Remove unnecessary debugging from r351181 that caused powerpc build to fail.	2019-08-18 08:07:31 +00:00
vm_phys.h	Encapsulate phys_avail manipulation in a set of simple routines. Add a	2019-08-18 07:06:31 +00:00
vm_radix.c	vm: stop passing M_ZERO when allocating radix nodes	2018-06-24 13:08:05 +00:00
vm_radix.h	sys: general adoption of SPDX licensing ID tags.	2017-11-27 15:23:17 +00:00
vm_reserv.c	Fix locking in vm_reserv_reclaim_contig().	2019-11-22 16:28:52 +00:00
vm_reserv.h	Fix locking in vm_reserv_reclaim_contig().	2019-11-22 16:28:52 +00:00
vm_swapout_dummy.c	SPDX: Consider code from Carnegie-Mellon University.	2017-11-30 15:48:35 +00:00
vm_swapout.c	Add a helper function to the swapout daemon's deactivation code.	2019-12-10 18:15:20 +00:00
vm_unix.c	Provide separate accounting for user-wired pages.	2019-05-13 16:38:48 +00:00
vm.h	Move vm_ndomains to vm.h where it can be used with a single header include	2018-03-27 03:27:02 +00:00
vnode_pager.c	vfs: introduce v_irflag and make v_type smaller	2019-12-08 21:30:04 +00:00
vnode_pager.h	vm pager: writemapping accounting for OBJT_SWAP	2019-09-03 20:31:48 +00:00