Konstantin Belousov 77d6fd97ef Improve vm_object_scan_all_shadowed() to also check swap backing objects. ...

As noted in the removed comment, it is possible and not prohibitively
costly to look up the swap blocks for the given page index.  Implement
a swap_pager_find_least() function to do that, and use it to iterate
simultaneously over both backing object page queue and swap
allocations when looking for shadowed pages.

Testing shows that number of new succesful scans, enabled by this
addition, is small but non-zero.  When worked out, the change both
further reduces the depth of the shadow object chain, and frees unused
but allocated swap and memory.

Suggested and reviewed by:	alc
Tested by:	pho (previous version)
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks

2016-12-18 20:56:14 +00:00

..

_vm_radix.h

During vm_page_cache()'s call to vm_radix_insert(), if vm_page_alloc() was

2016-12-01 17:26:37 +00:00

default_pager.c

Provide introductory description of the default pager.

2016-12-14 23:36:32 +00:00

device_pager.c

Add a new populate() pager method and extend device pager ops vector

2016-12-08 11:26:11 +00:00

memguard.c

Include sys/_task.h into uma_int.h, so that taskqueue.h isn't a

2016-02-09 20:22:35 +00:00

memguard.h

…

phys_pager.c

Implement the populate() pager method for phys pager.

2016-12-08 11:35:53 +00:00

pmap.h

Various changes to pmap_ts_referenced()

2016-09-10 16:49:25 +00:00

redzone.c

…

redzone.h

…

sg_pager.c

Plug a vm_page leak introduced in r292373.

2016-02-05 19:35:53 +00:00

swap_pager.c

Improve vm_object_scan_all_shadowed() to also check swap backing objects.

2016-12-18 20:56:14 +00:00

swap_pager.h

Improve vm_object_scan_all_shadowed() to also check swap backing objects.

2016-12-18 20:56:14 +00:00

uma_core.c

Simplify keg_drain() a bit by using LIST_FOREACH_SAFE.

2016-10-20 23:10:27 +00:00

uma_dbg.c

Fix memguard(9) in kernels with INVARIANTS enabled.

2016-06-01 22:31:35 +00:00

uma_dbg.h

Move uma_dbg_alloc() and uma_dbg_free() into uma_core.c, which allows

2016-02-03 22:02:36 +00:00

uma_int.h

Autotune the number of pages set aside for UMA startup based on the number

2016-07-07 18:37:12 +00:00

uma.h

Replace a number of conflations of mp_ncpus and mp_maxid with either

2016-07-06 14:09:49 +00:00

vm_domain.c

Move vm_domain_rr_selectdomain() under #ifdef VM_NUMA_ALLOC.

2016-05-10 22:25:55 +00:00

vm_domain.h

Add an initial NUMA affinity/policy configuration for threads and processes.

2015-07-11 15:21:37 +00:00

vm_extern.h

Various cleanups to the main function for AIO kernel processes:

2016-01-19 21:37:51 +00:00

vm_fault.c

Add a new populate() pager method and extend device pager ops vector

2016-12-08 11:26:11 +00:00

vm_glue.c

Eliminate unneeded vm_page_xbusy() and vm_page_xunbusy() operations when

2016-08-14 22:00:45 +00:00

vm_init.c

Conditionally move initial vfs bio alloc above 4G

2016-10-03 13:23:43 +00:00

vm_kern.c

Introduce a new mechanism for relocating virtual pages to a new physical

2015-12-19 18:42:50 +00:00

vm_kern.h

…

vm_map.c

Use db_lookup_proc() in the DDB 'show procvm' command.

2016-12-13 19:22:43 +00:00

vm_map.h

Change the type of the map entry's next_read field from a vm_pindex_t to a

2016-07-07 20:58:16 +00:00

vm_meter.c

Conditionalize PG_CACHE sysctls on COMPAT_FREEBSD11.

2016-12-09 18:55:27 +00:00

vm_mmap.c

Remove most of the code for implementing PG_CACHED pages. (This change does

2016-11-15 18:22:50 +00:00

vm_object.c

Improve vm_object_scan_all_shadowed() to also check swap backing objects.

2016-12-18 20:56:14 +00:00

vm_object.h

Eliminate every mention of PG_CACHED pages from the comments in the machine-

2016-12-12 17:47:09 +00:00

vm_page.c

Eliminate every mention of PG_CACHED pages from the comments in the machine-

2016-12-12 17:47:09 +00:00

vm_page.h

Eliminate every mention of PG_CACHED pages from the comments in the machine-

2016-12-12 17:47:09 +00:00

vm_pageout.c

Release laundered vnode pages to the head of the inactive queue.

2016-11-23 17:53:07 +00:00

vm_pageout.h

The flag "vm_pages_needed" has long served two distinct purposes: (1) to

2016-05-27 19:15:45 +00:00

vm_pager.c

Allow bogus_page to be passed to pager(s).

2016-12-09 21:21:24 +00:00

vm_pager.h

Add a new populate() pager method and extend device pager ops vector

2016-12-08 11:26:11 +00:00

vm_param.h

Remove the v_cache_min and v_cache_max sysctls. They are unused and have

2015-09-11 03:00:20 +00:00

vm_phys.c

Remove support for idle page zeroing.

2016-09-03 20:38:13 +00:00

vm_phys.h

Remove support for idle page zeroing.

2016-09-03 20:38:13 +00:00

vm_radix.c

Previously, vm_radix_remove() would panic if the radix trie didn't

2016-12-08 04:29:29 +00:00

vm_radix.h

Previously, vm_radix_remove() would panic if the radix trie didn't

2016-12-08 04:29:29 +00:00

vm_reserv.c

Eliminate every mention of PG_CACHED pages from the comments in the machine-

2016-12-12 17:47:09 +00:00

vm_reserv.h

Remove most of the code for implementing PG_CACHED pages. (This change does

2016-11-15 18:22:50 +00:00

vm_unix.c

Implement lockless resource limits.

2015-06-10 10:48:12 +00:00

vm.h

Add new bus methods for mapping resources.

2016-05-20 17:57:47 +00:00

vnode_pager.c

Release laundered vnode pages to the head of the inactive queue.

2016-11-23 17:53:07 +00:00

vnode_pager.h

A change to KPI of vm_pager_get_pages() and underlying VOP_GETPAGES().

2015-12-16 21:30:45 +00:00