Dan Williams
97500a4a54
mm: maintain randomization of page free lists ...
When freeing a page with an order >= shuffle_page_order randomly select
the front or back of the list for insertion.
While the mm tries to defragment physical pages into huge pages this can
tend to make the page allocator more predictable over time. Inject the
front-back randomness to preserve the initial randomness established by
shuffle_free_memory() when the kernel was booted.
The overhead of this manipulation is constrained by only being applied
for MAX_ORDER sized pages by default.
[akpm@linux-foundation.org: coding-style fixes]
Link: http://lkml.kernel.org/r/154899812788.3165233.9066631950746578517.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Keith Busch <keith.busch@intel.com>
Cc: Robert Elliott <elliott@hpe.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-14 19:52:48 -07:00
arm64 updates for 5.2
2019-05-06 17:54:22 -07:00
writeback: synchronize sync(2) against cgroup writeback membership switches
2019-01-22 14:39:38 -07:00
mm/cma.c: fix crash on CMA allocation if bitmap allocation fails
2019-05-14 09:47:47 -07:00
mm/cma_debug.c: fix the break condition in cma_maxchunk_get()
2019-05-14 09:47:45 -07:00
mm: move buddy list manipulations into helpers
2019-05-14 19:52:48 -07:00
mm: update references to page _refcount
2019-05-14 19:52:47 -07:00
docs/core-api/mm: fix return value descriptions in mm/
2019-03-05 21:07:20 -08:00
mm: no need to check return value of debugfs_create functions
2019-03-05 21:07:17 -08:00
mm: delete find_get_entries_tag
2019-05-14 09:47:51 -07:00
mm: introduce put_user_page*(), placeholder versions
2019-05-14 09:47:47 -07:00
mm/gup: replace get_user_pages_longterm() with FOLL_LONGTERM
2019-05-14 09:47:45 -07:00
mm: convert totalram_pages and totalhigh_pages variables to atomic
2018-12-28 12:11:47 -08:00
mm/mmu_notifier: convert user range->blockable to helper function
2019-05-14 09:47:49 -07:00
mm/huge_memory.c: make __thp_get_unmapped_area static
2019-05-14 09:47:51 -07:00
hugetlbfs: always use address space in inode for resv_map pointer
2019-05-14 09:47:50 -07:00
mm, compaction: capture a page under direct compaction
2019-03-05 21:07:17 -08:00
mm/Kconfig: update "Memory Model" help text
2019-05-14 09:47:51 -07:00
mm: remove redundant 'default n' from Kconfig-s
2019-05-14 09:47:50 -07:00
mm/mmu_notifier: use correct mmu_notifier events for each invalidation
2019-05-14 09:47:49 -07:00
Merge branch 'core-stacktrace-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-05-06 13:11:48 -07:00
mm/mmu_notifier: use correct mmu_notifier events for each invalidation
2019-05-14 09:47:49 -07:00
numa: make "nr_node_ids" unsigned int
2019-03-05 21:07:19 -08:00
Revert "x86/fault: BUG() when uaccess helpers fault on kernel addresses"
2019-02-25 09:10:51 -08:00
mm/mmu_notifier: use correct mmu_notifier events for each invalidation
2019-05-14 09:47:49 -07:00
mm: shuffle initial free memory to improve memory-side-cache utilization
2019-05-14 19:52:48 -07:00
mm: memblock: make keeping memblock memory opt-in rather than opt-out
2019-05-14 09:47:50 -07:00
mm: memcontrol: quarantine the mem_cgroup_[node_]nr_lru_pages() API
2019-05-14 09:47:47 -07:00
mm: page cache: store only head pages in i_pages
2019-05-14 09:47:45 -07:00
mm: hwpoison: fix thp split handing in soft_offline_in_use_page()
2019-03-05 21:07:13 -08:00
mm: introduce new vm_map_pages() and vm_map_pages_zero() API
2019-05-14 09:47:50 -07:00
mm: shuffle initial free memory to improve memory-side-cache utilization
2019-05-14 19:52:48 -07:00
mm: mempolicy: make mbind() return -EIO when MPOL_MF_STRICT is specified
2019-03-29 10:01:37 -07:00
docs/core-api/mm: fix return value descriptions in mm/
2019-03-05 21:07:20 -08:00
mm/mmu_notifier: use correct mmu_notifier events for each invalidation
2019-05-14 09:47:49 -07:00
Revert "Change mincore() to count "mapped" pages rather than "cached" pages"
2019-01-24 09:04:37 +13:00
mm: remove zone_lru_lock() function, access ->lru_lock directly
2019-03-05 21:07:21 -08:00
mm: convert totalram_pages and totalhigh_pages variables to atomic
2018-12-28 12:11:47 -08:00
coredump: fix race condition between mmget_not_zero()/get_task_mm() and core dumping
2019-04-19 09:46:05 -07:00
asm-generic/tlb: Remove tlb_table_flush()
2019-04-03 10:33:02 +02:00
mm/mmu_notifier: mmu_notifier_range_update_to_read_only() helper
2019-05-14 09:47:49 -07:00
mm/mprotect.c: fix compilation warning because of unused 'mm' variable
2019-05-14 09:47:51 -07:00
mm/mmu_notifier: contextual information for event triggering invalidation
2019-05-14 09:47:49 -07:00
mm: introduce new vm_map_pages() and vm_map_pages_zero() API
2019-05-14 09:47:50 -07:00
mm/mmu_notifier: contextual information for event triggering invalidation
2019-05-14 09:47:49 -07:00
mm/page-writeback: introduce tracepoint for wait_on_page_writeback()
2019-05-14 09:47:51 -07:00
mm: maintain randomization of page free lists
2019-05-14 19:52:48 -07:00
memblock: drop memblock_alloc_*_nopanic() variants
2019-03-12 10:04:02 -07:00
mm: remove zone_lru_lock() function, access ->lru_lock directly
2019-03-05 21:07:21 -08:00
mm/page_io.c: fix polled swap page in
2019-01-04 13:13:48 -08:00
mm/page_isolation.c: remove redundant pfn_valid_within() in __first_valid_page()
2019-05-14 09:47:46 -07:00
mm/page_owner: Simplify stack trace handling
2019-04-29 12:37:50 +02:00
page_poison: play nicely with KASAN
2019-03-05 21:07:13 -08:00
mm/rmap: map_pte() was not handling private ZONE_DEVICE page properly
2018-10-31 08:54:11 -07:00
percpu: convert chunk hints to be based on pcpu_block_md
2019-03-13 12:25:31 -07:00
percpu: set PCPU_BITMAP_BLOCK_SIZE to PAGE_SIZE
2019-03-13 12:25:31 -07:00
percpu: convert chunk hints to be based on pcpu_block_md
2019-03-13 12:25:31 -07:00
Merge branch 'for-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu
2019-05-13 15:34:03 -07:00
docs/core-api/mm: fix return value descriptions in mm/
2019-03-05 21:07:20 -08:00
mm/rmap.c: use the pra.mapcount to do the check
2019-05-14 09:47:49 -07:00
mm: page cache: store only head pages in i_pages
2019-05-14 09:47:45 -07:00
mm: maintain randomization of page free lists
2019-05-14 19:52:48 -07:00
mm: maintain randomization of page free lists
2019-05-14 19:52:48 -07:00
mm/slab.c: fix an infinite loop in leaks_show()
2019-05-14 09:47:45 -07:00
mm: add support for kmem caches in DMA32 zone
2019-03-29 10:01:37 -07:00
mm: add support for kmem caches in DMA32 zone
2019-03-29 10:01:37 -07:00
slob: use slab_list instead of lru
2019-05-14 09:47:44 -07:00
mm/slub.c: update the comment about slab frozen
2019-05-14 09:47:45 -07:00
mm: remove include/linux/bootmem.h
2018-10-31 08:54:16 -07:00
mm/sparse.c: clean up obsolete code comment
2019-05-14 09:47:48 -07:00
mm/swap.c: __pagevec_lru_add_fn: typo fix
2019-05-14 09:47:48 -07:00
mm: page cache: store only head pages in i_pages
2019-05-14 09:47:45 -07:00
mm: swapoff: shmem_unuse() stop eviction without igrab()
2019-04-19 09:46:04 -07:00
docs/core-api/mm: fix return value descriptions in mm/
2019-03-05 21:07:20 -08:00
mm/usercopy.c: no check page span for stack objects
2019-01-08 17:15:11 -08:00
hugetlb: use same fault hash key for shared and private mappings
2019-05-14 09:47:48 -07:00
mm: fix false-positive OVERCOMMIT_GUESS failures
2019-05-14 09:47:50 -07:00
mm/vmalloc.c: convert vmap_lazy_nr to atomic_long_t
2019-05-14 19:52:48 -07:00
mm/vmscan.c: don't disable irq again when count pgrefill for memcg
2019-05-14 09:47:51 -07:00
mm/vmstat.c: fix /proc/vmstat format for CONFIG_DEBUG_TLBFLUSH=y CONFIG_SMP=n
2019-04-19 09:46:04 -07:00
mm: memcontrol: push down mem_cgroup_node_nr_lru_pages()
2019-05-14 09:47:46 -07:00
mm/z3fold.c: support page migration
2019-05-14 09:47:50 -07:00
mm/zsmalloc.c: fix fall-through annotation
2018-10-26 16:26:35 -07:00
mm: convert totalram_pages and totalhigh_pages variables to atomic
2018-12-28 12:11:47 -08:00
97500a4a54