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freebsd-nq/sys/vm
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Konstantin Belousov 99a1570a25 r221714 fixed the situation when the collapse scan improperly handled 
invalid (busy) page supposedly inserted by the vm_fault(), in the
OBSC_COLLAPSE_NOWAIT case.  As a continuation to r221714, fix a case
when invalid page is found by the object scan in OBSC_COLLAPSE_WAIT
case as well.  But, since this is waitable scan, we should wait for
the termination of the busy state and restart from the beginning of
the backing object' page queue. [*]

Do not free the shadow page swap space when the parent page is
invalid, otherwise this action potentially corrupts user data.

Combine all instances of the collapse scan sleep code fragments into
the new helper vm_object_backing_scan_wait().

Improve style compliance and comments.  Change the return type of
vm_object_backing_scan() to bool.

Initial submission by:	cem, https://reviews.freebsd.org/D4103 [*]
Reviewed by:	alc, cem
Tested by:	cem
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
Differential revision:	https://reviews.freebsd.org/D4146
2015-12-01 09:06:09 +00:00
..
_vm_radix.h
default_pager.c Place VM objects on the object list when created and never remove them. 2015-05-08 19:43:37 +00:00
device_pager.c Minor cleanup. 2015-11-29 11:37:25 +00:00
memguard.c
memguard.h
phys_pager.c Place VM objects on the object list when created and never remove them. 2015-05-08 19:43:37 +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 Place VM objects on the object list when created and never remove them. 2015-05-08 19:43:37 +00:00
swap_pager.c Mark swap_pager_putpages static at its definition. It was already 2015-10-05 21:29:17 +00:00
swap_pager.h
uma_core.c Consistently enforce the restriction against calling malloc/free when in a 2015-11-19 14:04:53 +00:00
uma_dbg.c If INVARIANTS is specified, add ctor/dtor to junk memory if they are 2015-06-25 20:44:46 +00:00
uma_dbg.h
uma_int.h
uma.h The vmem callback to reclaim kmem arena address space on low or 2015-05-09 20:08:36 +00:00
vm_domain.c Add an initial NUMA affinity/policy configuration for threads and processes. 2015-07-11 15:21:37 +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 Add a new file operations hook for mmap operations. File type-specific 2015-06-04 19:41:15 +00:00
vm_fault.c Refinements to r281079's sequential access optimization: Prefetched pages, 2015-08-03 20:30:27 +00:00
vm_glue.c Exploit r288122 to avoid pointlessly enqueueing a page that is about to be 2015-10-09 03:38:58 +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 Export various helper variables describing the layout and size of 2015-11-12 22:00:59 +00:00
vm_kern.h
vm_map.c Remove a check which caused spurious SIGSEGV on usermode access to the 2015-09-09 06:19:33 +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 r221714 fixed the situation when the collapse scan improperly handled 2015-12-01 09:06:09 +00:00
vm_object.h As a step towards the elimination of PG_CACHED pages, rework the handling 2015-09-30 23:06:29 +00:00
vm_page.c Ensure that deactivated pages that are not expected to be reused are 2015-11-08 01:36:18 +00:00
vm_page.h Rework the test which raises OOM condition. Right now, the code 2015-11-16 06:26:26 +00:00
vm_pageout.c In vm_pageout_grow_cache(), do not re-try the inactive queue when 2015-11-27 19:43:36 +00:00
vm_pageout.h Reduce the scope of a variable to the only file where it is used. 2015-10-03 19:27:52 +00:00
vm_pager.c - Make 'struct buf *buf' private to vfs_bio.c. Having a global variable 2015-07-29 02:26:57 +00:00
vm_pager.h o Un-inline vm_pager_get_pages(), vm_pager_get_pages_async(). 2015-06-17 22:44:27 +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 Add an initial NUMA affinity/policy configuration for threads and processes. 2015-07-11 15:21:37 +00:00
vm_phys.h Add an initial NUMA affinity/policy configuration for threads and processes. 2015-07-11 15:21:37 +00:00
vm_radix.c
vm_radix.h
vm_reserv.c Correct an error in vm_reserv_reclaim_contig(). In the highly unusual 2015-11-26 19:12:18 +00:00
vm_reserv.h
vm_unix.c Implement lockless resource limits. 2015-06-10 10:48:12 +00:00
vm_zeroidle.c
vm.h
vnode_pager.c Record proper commit message for r291157. 2015-11-22 09:50:13 +00:00
vnode_pager.h