freebsd-nq/sys/vm
Alan Cox 56ce06907c The flag "vm_pages_needed" has long served two distinct purposes: (1) to
indicate that threads are waiting for free pages to become available and
(2) to indicate whether a wakeup call has been sent to the page daemon.
The trouble is that a single flag cannot really serve both purposes, because
we have two distinct targets for when to wakeup threads waiting for free
pages versus when the page daemon has completed its work.  In particular,
the flag will be cleared by vm_page_free() before the page daemon has met
its target, and this can lead to the OOM killer being invoked prematurely.
To address this problem, a new flag "vm_pageout_wanted" is introduced.

Discussed with:	jeff
Reviewed by:	kib, markj
Tested by:	markj
Sponsored by:	EMC / Isilon Storage Division
2016-05-27 19:15:45 +00:00
..
_vm_radix.h
default_pager.c A change to KPI of vm_pager_get_pages() and underlying VOP_GETPAGES(). 2015-12-16 21:30:45 +00:00
device_pager.c Avoid duplicated calls to pmap_page_get_memattr(). 2016-05-01 17:48:43 +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 sys: use our roundup2/rounddown2() macros when param.h is available. 2016-04-21 19:57:40 +00:00
pmap.h Properly sort the function declarations added in r286296 2015-08-05 10:48:32 +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 Remove Giant around allocation of the swap pager with non-NULL handle. 2016-05-24 10:16:03 +00:00
swap_pager.h
uma_core.c sys/vm: minor spelling fixes in comments. 2016-05-02 20:16:29 +00:00
uma_dbg.c Include sys/_task.h into uma_int.h, so that taskqueue.h isn't a 2016-02-09 20:22:35 +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 sys/vm: minor spelling fixes in comments. 2016-05-02 20:16:29 +00:00
uma.h Remove UMA_ZONE_REFCNT feature, now unused. 2016-03-01 00:33:32 +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 Use vm_page_replace_checked() instead of vm_page_rename() for implementing 2016-05-27 06:05:12 +00:00
vm_glue.c Remove false claim. Giant is dropped by mi_startup() before passing 2016-05-22 19:25:53 +00:00
vm_init.c Parallelize the buffer cache and rewrite getnewbuf(). This results in a 2015-10-14 02:10:07 +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 sys/vm: minor spelling fixes in comments. 2016-05-02 20:16:29 +00:00
vm_map.h Do not pretend that vm_fault(9) supports unwiring the address. Rename 2015-07-30 18:28:34 +00:00
vm_meter.c Remove the v_cache_min and v_cache_max sysctls. They are unused and have 2015-09-11 03:00:20 +00:00
vm_mmap.c Add a local variable initialization needed in the OBJT_DEFAULT case. 2015-07-05 22:26:19 +00:00
vm_object.c Prevent parallel object collapses. Both vm_object_collapse_scan() and 2016-05-26 16:59:29 +00:00
vm_object.h Add implementation of robust mutexes, hopefully close enough to the 2016-05-17 09:56:22 +00:00
vm_page.c The flag "vm_pages_needed" has long served two distinct purposes: (1) to 2016-05-27 19:15:45 +00:00
vm_page.h vm/vm_page.h: Fix trivial '-Wpointer-sign' warning 2016-05-19 17:54:14 +00:00
vm_pageout.c The flag "vm_pages_needed" has long served two distinct purposes: (1) to 2016-05-27 19:15:45 +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 Remove slightly used const values that can be replaced with nitems(). 2016-04-21 15:38:28 +00:00
vm_pager.h A change to KPI of vm_pager_get_pages() and underlying VOP_GETPAGES(). 2015-12-16 21:30:45 +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 sys: use our roundup2/rounddown2() macros when param.h is available. 2016-04-21 19:57:40 +00:00
vm_phys.h Add more fine-grained kernel options for NUMA support. 2016-04-09 13:58:04 +00:00
vm_radix.c Cleanup redundant parenthesis from existing howmany()/roundup() macro uses. 2016-04-22 16:57:42 +00:00
vm_radix.h
vm_reserv.c Introduce a new mechanism for relocating virtual pages to a new physical 2015-12-19 18:42:50 +00:00
vm_reserv.h Introduce a new mechanism for relocating virtual pages to a new physical 2015-12-19 18:42:50 +00:00
vm_unix.c Implement lockless resource limits. 2015-06-10 10:48:12 +00:00
vm_zeroidle.c
vm.h Add new bus methods for mapping resources. 2016-05-20 17:57:47 +00:00
vnode_pager.c Add implementation of robust mutexes, hopefully close enough to the 2016-05-17 09:56:22 +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