Konstantin Belousov bf5661f4a1 madvise(MADV_FREE): Quick fix to time rewind. ... Don't free pages in a shadowing object. While this degrades MADV_FREE to a no-op (and we could, instead, choose to fall back to MADV_DONTNEED, at the cost of changing pmap_madvise), this is presently considered a temporary fix. We may prefer to risk a little fragmentation of the map by creating a zero/OBJT_DEFAULT entry over top of the existing object and, simultaneously, revert to the existing marking any pages in the former shadowing object in the advised region as reclaimable. At least one consumer of MADV_FREE (snmalloc) may use mmap() to construct zeroed pages "eventually" here anyway, so the fragmentation may be coming anyway. Submitted by: Nathaniel Filardo <nwf20@cl.cam.ac.uk> PR: 240061 Reviewed by: markj MFC after: 1 week Differential revision: https://reviews.freebsd.org/D21517		2019-09-04 20:28:16 +00:00
..
_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	Add a return value to vm_page_remove().	2019-06-26 17:37:51 +00:00
memguard.c	Add a vm_page_wired() predicate.	2019-06-02 01:00:17 +00:00
memguard.h	sys: general adoption of SPDX licensing ID tags.	2017-11-27 15:23:17 +00:00
phys_pager.c	sys: general adoption of SPDX licensing ID tags.	2017-11-27 15:23:17 +00:00
pmap.h	correct pmap_ts_referenced return type	2019-07-03 19:59:56 +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	Change the vm_ooffset_t type to unsigned.	2018-12-02 13:16:46 +00:00
swap_pager.c	vm pager: writemapping accounting for OBJT_SWAP	2019-09-03 20:31:48 +00:00
swap_pager.h	sys: further adoption of SPDX licensing ID tags.	2017-11-20 19:43:44 +00:00
uma_core.c	Extend uma_reclaim() to permit different reclamation targets.	2019-09-01 22:22:43 +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	Extend uma_reclaim() to permit different reclamation targets.	2019-09-01 22:22:43 +00:00
uma.h	Extend uma_reclaim() to permit different reclamation targets.	2019-09-01 22:22:43 +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	Add malloc_domainset(9) and _domainset variants to other allocator KPIs.	2018-10-30 18:26:34 +00:00
vm_fault.c	Fix OOM handling of some corner cases.	2019-08-16 09:43:49 +00:00
vm_glue.c	Wire pages in vm_page_grab() when appropriate.	2019-08-28 16:08:06 +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	Map the vm_page array into KVA on amd64.	2019-09-03 13:18:51 +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	madvise(MADV_FREE): Quick fix to time rewind.	2019-09-04 20:28:16 +00:00
vm_map.h	vm pager: writemapping accounting for OBJT_SWAP	2019-09-03 20:31:48 +00:00
vm_meter.c	Provide separate accounting for user-wired pages.	2019-05-13 16:38:48 +00:00
vm_mmap.c	vm pager: writemapping accounting for OBJT_SWAP	2019-09-03 20:31:48 +00:00
vm_object.c	vm: only lock tmpfs vnode shared in vm_object_deallocate	2019-08-28 19:28:27 +00:00
vm_object.h	vm pager: writemapping accounting for OBJT_SWAP	2019-09-03 20:31:48 +00:00
vm_page.c	Add preliminary support for atomic updates of per-page queue state.	2019-09-03 14:29:58 +00:00
vm_page.h	Add preliminary support for atomic updates of per-page queue state.	2019-09-03 14:29:58 +00:00
vm_pageout.c	Add preliminary support for atomic updates of per-page queue state.	2019-09-03 14:29:58 +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_page_dequeue() and fix an assertion.	2019-08-21 16:11:12 +00:00
vm_pager.c	Do not reserve KVA for paging bufs in vm_ksubmap_init(), since now	2019-01-16 20:14:16 +00:00
vm_pager.h	vm pager: writemapping accounting for OBJT_SWAP	2019-09-03 20:31:48 +00:00
vm_param.h	Move phys_avail definition into MI code. It is consumed in the MI layer and	2019-08-16 00:45:14 +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	Allocate amd64's page array using pages and page directory pages from the	2019-08-18 23:07:56 +00:00
vm_reserv.h	Allocate amd64's page array using pages and page directory pages from the	2019-08-18 23:07:56 +00:00
vm_swapout_dummy.c	SPDX: Consider code from Carnegie-Mellon University.	2017-11-30 15:48:35 +00:00
vm_swapout.c	Make vm_pqbatch_submit_page() externally visible.	2019-08-23 19:49:29 +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	vm pager: writemapping accounting for OBJT_SWAP	2019-09-03 20:31:48 +00:00
vnode_pager.h	vm pager: writemapping accounting for OBJT_SWAP	2019-09-03 20:31:48 +00:00