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freebsd-nq/sys/vm
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Mark Johnston af32cefd7c Check the UMA zone's full bucket cache before short-circuiting an alloc. 
The global "bucketdisable" flag indicates that we are in a low memory
situation and should avoid allocating buckets.  However, in the
allocation path we were checking it before the full bucket cache and
bailing even if the cache is non-empty.  Defer the check so that we have
a shot at allocating from the cache.

This came up because M_NOWAIT allocations from the buf trie node zone
must always succeed.  In one scenario, all of the preallocated trie
nodes were in the bucket list, and a new slab allocation could not
succeed due to a memory shortage.  The short-circuiting caused an
allocation failure which triggered a panic.

Reported by:	pho
Reviewed by:	cem
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D25980
2020-08-10 20:34:45 +00:00
..
_vm_radix.h
…
default_pager.c
…
device_pager.c
Don't hold the object lock while calling getpages.
2020-01-19 23:47:32 +00:00
memguard.c
Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)
2020-02-26 14:26:36 +00:00
memguard.h
…
phys_pager.c
Don't hold the object lock while calling getpages.
2020-01-19 23:47:32 +00:00
pmap.h
Remove page locking from pmap_mincore().
2019-10-16 22:03:27 +00:00
redzone.c
Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)
2020-02-26 14:26:36 +00:00
redzone.h
…
sg_pager.c
Don't hold the object lock while calling getpages.
2020-01-19 23:47:32 +00:00
swap_pager.c
Fix an overflow bug in the blist allocator that needlessly capped max
2020-07-25 18:29:10 +00:00
swap_pager.h
Remove swblk_t.
2020-02-17 15:11:07 +00:00
uma_core.c
Check the UMA zone's full bucket cache before short-circuiting an alloc.
2020-08-10 20:34:45 +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
…
uma_int.h
Clarify some language. Favor primary where both master and primary were
2020-06-20 20:21:04 +00:00
uma.h
Remove free_domain() and uma_zfree_domain().
2020-08-04 13:58:36 +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
Use a single VM object for kernel stacks.
2020-04-26 20:08:57 +00:00
vm_fault.c
Add a helper function for validating VA ranges.
2020-06-19 03:32:04 +00:00
vm_glue.c
Use a single VM object for kernel stacks.
2020-04-26 20:08:57 +00:00
vm_init.c
Simplify VM and UMA startup by eliminating boot pages. Instead use careful
2020-01-16 05:01:21 +00:00
vm_kern.c
Factor out the kmem contig page alloc and reclamation code.
2020-04-21 16:01:44 +00:00
vm_kern.h
Use a single VM object for kernel stacks.
2020-04-26 20:08:57 +00:00
vm_map.c
Preserve ASLR vm_map flags across fork
2020-08-06 16:20:20 +00:00
vm_map.h
Add vm_map_valid_range_KBI().
2020-07-13 16:39:27 +00:00
vm_meter.c
Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)
2020-02-26 14:26:36 +00:00
vm_mmap.c
Add linux_madvise(2) instead of having Linux apps call the native
2020-06-20 18:29:22 +00:00
vm_object.c
Call swap_pager_freespace() from vm_object_page_remove().
2020-06-25 15:21:21 +00:00
vm_object.h
Add a blocking counter KPI.
2020-02-28 16:05:18 +00:00
vm_page.c
Remove most lingering references to the page lock in comments.
2020-08-04 14:59:43 +00:00
vm_page.h
Remove most lingering references to the page lock in comments.
2020-08-04 14:59:43 +00:00
vm_pageout.c
Remove most lingering references to the page lock in comments.
2020-08-04 14:59:43 +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
sys/vm: quiet -Wwrite-strings
2020-02-23 03:32:04 +00:00
vm_pager.h
Add a blocking counter KPI.
2020-02-28 16:05:18 +00:00
vm_param.h
(fault 3/9) Move map relookup into a dedicated function.
2020-01-23 05:07:01 +00:00
vm_phys.c
Fix boot on systems where NUMA domain 0 is unpopulated.
2020-05-28 19:41:00 +00:00
vm_phys.h
Fix boot on systems where NUMA domain 0 is unpopulated.
2020-05-28 19:41:00 +00:00
vm_radix.c
kernel: provide panicky version of __unreachable
2020-05-13 18:07:37 +00:00
vm_radix.h
Use SMR to provide a safe unlocked lookup for vm_radix.
2020-02-19 19:58:31 +00:00
vm_reserv.c
Use COUNTER_U64_DEFINE_EARLY() in places where it simplifies things.
2020-03-06 19:10:00 +00:00
vm_reserv.h
Fix locking in vm_reserv_reclaim_contig().
2019-11-22 16:28:52 +00:00
vm_swapout_dummy.c
…
vm_swapout.c
Use a single VM object for kernel stacks.
2020-04-26 20:08:57 +00:00
vm_unix.c
Provide separate accounting for user-wired pages.
2019-05-13 16:38:48 +00:00
vm.h
vm: fix swap reservation leak and clean up surrounding code
2020-07-24 13:23:32 +00:00
vnode_pager.c
Remove most lingering references to the page lock in comments.
2020-08-04 14:59:43 +00:00
vnode_pager.h
vm pager: writemapping accounting for OBJT_SWAP
2019-09-03 20:31:48 +00:00