linux-stable/mm
Colin Cross ac1e9acc5a mm: rearrange madvise code to allow for reuse
Patch series "mm: rearrange madvise code to allow for reuse", v11.

Avoid performance regression of the new anon vma name field refcounting it.

I checked the image sizes with allnoconfig builds:

  unpatched Linus' ToT
     text    data     bss     dec     hex filename
  1324759      32   73928 1398719 1557bf vmlinux

  After the first patch is applied (madvise refactoring)
     text    data     bss     dec     hex filename
  1322346      32   73928 1396306 154e52 vmlinux
  >>> 2413 bytes decrease vs ToT <<<

  After all patches applied with CONFIG_ANON_VMA_NAME=n
     text    data     bss     dec     hex filename
  1322337      32   73928 1396297 154e49 vmlinux
  >>> 2422 bytes decrease vs ToT <<<

  After all patches applied with CONFIG_ANON_VMA_NAME=y
     text    data     bss     dec     hex filename
  1325228      32   73928 1399188 155994 vmlinux
  >>> 469 bytes increase vs ToT <<<

This patch (of 3):

Refactor the madvise syscall to allow for parts of it to be reused by a
prctl syscall that affects vmas.

Move the code that walks vmas in a virtual address range into a function
that takes a function pointer as a parameter.  The only caller for now
is sys_madvise, which uses it to call madvise_vma_behavior on each vma,
but the next patch will add an additional caller.

Move handling all vma behaviors inside madvise_behavior, and rename it
to madvise_vma_behavior.

Move the code that updates the flags on a vma, including splitting or
merging the vma as necessary, into a new function called
madvise_update_vma.  The next patch will add support for updating a new
anon_name field as well.

Link: https://lkml.kernel.org/r/20211019215511.3771969-1-surenb@google.com
Signed-off-by: Colin Cross <ccross@google.com>
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Jan Glauber <jan.glauber@gmail.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Rob Landley <rob@landley.net>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: "Serge E. Hallyn" <serge.hallyn@ubuntu.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Hugh Dickins <hughd@google.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Shaohua Li <shli@fusionio.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-01-15 16:30:27 +02:00
..
damon mm/damon/dbgfs: fix 'struct pid' leaks in 'dbgfs_target_ids_write()' 2021-12-31 09:20:12 -08:00
kasan kasan: fix quarantine conflicting with init_on_free 2022-01-15 16:30:26 +02:00
kfence kfence: fix memory leak when cat kfence objects 2021-12-25 12:20:55 -08:00
backing-dev.c mm: bdi: initialize bdi_min_ratio when bdi is unregistered 2021-12-10 17:10:56 -08:00
balloon_compaction.c mm: fix typos in comments 2021-05-07 00:26:35 -07:00
bootmem_info.c mm/bootmem_info.c: mark __init on register_page_bootmem_info_section 2021-09-03 09:58:14 -07:00
cleancache.c Driver Core and debugfs changes for 5.3-rc1 2019-07-12 12:24:03 -07:00
cma_debug.c mm/cma: change cma mutex to irq safe spinlock 2021-05-05 11:27:21 -07:00
cma_sysfs.c mm: cma: support sysfs 2021-05-05 11:27:24 -07:00
cma.c memblock: rename memblock_free to memblock_phys_free 2021-11-06 13:30:41 -07:00
cma.h mm: cma: support sysfs 2021-05-05 11:27:24 -07:00
compaction.c Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
debug_page_ref.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
debug_vm_pgtable.c mm/debug_vm_pgtable: update comments regarding migration swap entries 2022-01-15 16:30:26 +02:00
debug.c mm,fs: split dump_mapping() out from dump_page() 2022-01-15 16:30:26 +02:00
dmapool.c mm/dmapool: use DEVICE_ATTR_RO macro 2021-06-29 10:53:52 -07:00
early_ioremap.c mm/early_ioremap.c: remove redundant early_ioremap_shutdown() 2021-09-08 11:50:24 -07:00
fadvise.c mm, fadvise: improve the expensive remote LRU cache draining after FADV_DONTNEED 2020-10-13 18:38:29 -07:00
failslab.c mm/failslab.c: by default, do not fail allocations with direct reclaim only 2019-07-12 11:05:43 -07:00
filemap.c filemap: remove PageHWPoison check from next_uptodate_page() 2021-12-10 17:10:55 -08:00
folio-compat.c mm/filemap: Add FGP_STABLE 2021-10-18 07:49:41 -04:00
frontswap.c mm/frontswap.c: use non-atomic '__set_bit()' when possible 2022-01-15 16:30:26 +02:00
gup_test.c selftests/vm: gup_test: test faulting in kernel, and verify pinnable pages 2021-05-05 11:27:26 -07:00
gup_test.h selftests/vm: gup_test: fix test flag 2021-05-05 11:27:26 -07:00
gup.c mm/gup.c: stricter check on THP migration entry during follow_pmd_mask 2022-01-15 16:30:26 +02:00
highmem.c Fixes for 5.16 folios: 2021-11-25 10:13:56 -08:00
hmm.c mm/hmm: bypass devmap pte when all pfn requested flags are fulfilled 2021-09-08 18:45:52 -07:00
huge_memory.c Memory folios 2021-11-01 08:47:59 -07:00
hugetlb_cgroup.c hugetlb_cgroup: remove unused hugetlb_cgroup_from_counter macro 2021-11-06 13:30:39 -07:00
hugetlb_vmemmap.c mm: hugetlb: introduce CONFIG_HUGETLB_PAGE_FREE_VMEMMAP_DEFAULT_ON 2021-06-30 20:47:26 -07:00
hugetlb_vmemmap.h mm: hugetlb: introduce nr_free_vmemmap_pages in the struct hstate 2021-06-30 20:47:25 -07:00
hugetlb.c hugetlbfs: fix issue of preallocation of gigantic pages can't work 2021-12-10 17:10:56 -08:00
hwpoison-inject.c mm: hwpoison: don't drop slab caches for offlining non-LRU page 2021-09-03 09:58:15 -07:00
init-mm.c mm: add setup_initial_init_mm() helper 2021-07-08 11:48:21 -07:00
internal.h mm: memcontrol: make cgroup_memory_nokmem static 2022-01-15 16:30:27 +02:00
interval_tree.c mm/interval_tree: add comments to improve code readability 2021-04-30 11:20:38 -07:00
io-mapping.c mm: add a io_mapping_map_user helper 2021-04-30 11:20:39 -07:00
ioremap.c mm: move ioremap_page_range to vmalloc.c 2021-09-08 11:50:24 -07:00
Kconfig percpu: km: ensure it is used with NOMMU (either UP or SMP) 2021-12-06 12:45:09 -05:00
Kconfig.debug mm, page_poison: remove CONFIG_PAGE_POISONING_ZERO 2020-12-15 12:13:46 -08:00
khugepaged.c Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
kmemleak.c kmemleak: fix kmemleak false positive report with HW tag-based kasan enable 2022-01-15 16:30:25 +02:00
ksm.c mm/migrate: Add folio_migrate_flags() 2021-10-18 07:49:39 -04:00
list_lru.c mm: list_lru: only add memcg-aware lrus to the global lru list 2021-11-06 13:30:35 -07:00
maccess.c ARM: 9115/1: mm/maccess: fix unaligned copy_{from,to}_kernel_nofault 2021-08-20 11:39:25 +01:00
madvise.c mm: rearrange madvise code to allow for reuse 2022-01-15 16:30:27 +02:00
Makefile mm/util: Add folio_mapping() and folio_file_mapping() 2021-09-27 09:27:30 -04:00
mapping_dirty_helpers.c mm/mapping_dirty_helpers: remove double Note in kerneldoc 2021-07-01 11:06:02 -07:00
memblock.c arm64 fixes for -rc1 2021-11-10 11:29:30 -08:00
memcontrol.c memcg: add per-memcg vmalloc stat 2022-01-15 16:30:27 +02:00
memfd.c mm,hugetlb: remove mlock ulimit for SHM_HUGETLB 2021-11-09 10:02:48 -08:00
memory_hotplug.c treewide: Add missing includes masked by cgroup -> bpf dependency 2021-12-03 10:58:13 -08:00
memory-failure.c mm: shmem: don't truncate page if memory failure happens 2022-01-15 16:30:26 +02:00
memory.c Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
mempolicy.c mm: mempolicy: fix THP allocations escaping mempolicy restrictions 2021-12-25 12:20:55 -08:00
mempool.c mm: remove spurious blkdev.h includes 2021-10-18 06:17:01 -06:00
memremap.c mm/memremap: add ZONE_DEVICE support for compound pages 2022-01-15 16:30:25 +02:00
memtest.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
migrate.c mm/migrate.c: remove MIGRATE_PFN_LOCKED 2021-11-11 09:34:35 -08:00
mincore.c inode: make init and permission helpers idmapped mount aware 2021-01-24 14:27:16 +01:00
mlock.c mm/memcg: Add folio_lruvec_relock_irq() and folio_lruvec_relock_irqsave() 2021-09-27 09:27:31 -04:00
mm_init.c include/linux/page-flags-layout.h: cleanups 2021-04-30 11:20:42 -07:00
mmap_lock.c mm: mmap_lock: fix disabling preemption directly 2021-07-23 17:43:28 -07:00
mmap.c mm,hugetlb: remove mlock ulimit for SHM_HUGETLB 2021-11-09 10:02:48 -08:00
mmu_gather.c mm: eliminate "expecting prototype" kernel-doc warnings 2021-04-16 16:10:36 -07:00
mmu_notifier.c mm/mmu_notifiers: ensure range_end() is paired with range_start() 2021-03-25 09:22:55 -07:00
mmzone.c mm/lru: replace pgdat lru_lock with lruvec lock 2020-12-15 14:48:04 -08:00
mprotect.c mm/mprotect.c: avoid repeated assignment in do_mprotect_pkey() 2021-11-06 13:30:36 -07:00
mremap.c mm, hugepages: add mremap() support for hugepage backed vma 2021-11-06 13:30:39 -07:00
msync.c mm/msync: exit early when the flags is an MS_ASYNC and start < vm_start 2021-04-30 11:20:37 -07:00
nommu.c Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
oom_kill.c mm/memcg: add oom_group_kill memory event 2022-01-15 16:30:27 +02:00
page_alloc.c mm/memremap: add ZONE_DEVICE support for compound pages 2022-01-15 16:30:25 +02:00
page_counter.c mm/page_counter: remove an incorrect call to propagate_protected_usage() 2022-01-15 16:30:27 +02:00
page_ext.c mm/page_ext.c: fix a comment 2021-11-06 13:30:34 -07:00
page_idle.c mm/idle_page_tracking: make PG_idle reusable 2021-09-08 11:50:24 -07:00
page_io.c for-5.16/block-2021-10-29 2021-11-01 09:19:50 -07:00
page_isolation.c mm/page_isolation: guard against possible putback unisolated page 2021-11-06 13:30:40 -07:00
page_owner.c mm/page_owner.c: modify the type of argument "order" in some functions 2021-11-11 09:34:35 -08:00
page_poison.c mm: page_poison: print page info when corruption is caught 2021-04-30 11:20:36 -07:00
page_reporting.c mm/page_reporting: allow driver to specify reporting order 2021-06-29 10:53:47 -07:00
page_reporting.h mm/page_reporting: export reporting order as module parameter 2021-06-29 10:53:47 -07:00
page_vma_mapped.c mm: device exclusive memory access 2021-07-01 11:06:03 -07:00
page-writeback.c folio: Add a function to get the host inode for a folio 2021-11-10 21:16:52 +00:00
pagewalk.c mm: pagewalk: fix walk for hugepage tables 2021-06-29 10:53:49 -07:00
percpu-internal.h Merge branch 'for-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu 2021-07-01 17:17:24 -07:00
percpu-km.c percpu: flush tlb in pcpu_reclaim_populated() 2021-07-04 18:30:17 +00:00
percpu-stats.c percpu: rework memcg accounting 2021-06-05 20:43:15 +00:00
percpu-vm.c percpu: flush tlb in pcpu_reclaim_populated() 2021-07-04 18:30:17 +00:00
percpu.c memblock: use memblock_free for freeing virtual pointers 2021-11-06 13:30:41 -07:00
pgalloc-track.h mm: fix typos in comments 2021-05-07 00:26:35 -07:00
pgtable-generic.c mm/thp: fix __split_huge_pmd_locked() on shmem migration entry 2021-06-16 09:24:42 -07:00
process_vm_access.c mm/process_vm_access.c: remove duplicate include 2021-05-05 11:27:27 -07:00
ptdump.c mm: ptdump: fix build failure 2021-04-16 16:10:37 -07:00
readahead.c Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
rmap.c Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
rodata_test.c mm/rodata_test.c: fix missing function declaration 2020-08-21 09:52:53 -07:00
secretmem.c mm/secretmem: avoid letting secretmem_users drop to zero 2021-10-28 17:18:55 -07:00
shmem.c shmem: fix a race between shmem_unused_huge_shrink and shmem_evict_inode 2022-01-15 16:30:26 +02:00
shuffle.c mm: eliminate "expecting prototype" kernel-doc warnings 2021-04-16 16:10:36 -07:00
shuffle.h mm/shuffle: fix section mismatch warning 2021-05-22 15:09:07 -10:00
slab_common.c mm: memcontrol: make cgroup_memory_nokmem static 2022-01-15 16:30:27 +02:00
slab.c mm: emit the "free" trace report before freeing memory in kmem_cache_free() 2021-11-20 10:35:54 -08:00
slab.h mm: slab: make slab iterator functions static 2022-01-15 16:30:25 +02:00
slob.c mm: emit the "free" trace report before freeing memory in kmem_cache_free() 2021-11-20 10:35:54 -08:00
slub.c mm/slub: fix endianness bug for alloc/free_traces attributes 2021-12-10 17:10:56 -08:00
sparse-vmemmap.c mm: remove redundant smp_wmb() 2021-11-06 13:30:36 -07:00
sparse.c memblock: use memblock_free for freeing virtual pointers 2021-11-06 13:30:41 -07:00
swap_cgroup.c mm: memcontrol: make swap tracking an integral part of memory control 2020-06-03 20:09:48 -07:00
swap_slots.c treewide: Add missing includes masked by cgroup -> bpf dependency 2021-12-03 10:58:13 -08:00
swap_state.c mm/workingset: Convert workingset_refault() to take a folio 2021-10-18 07:49:40 -04:00
swap.c mm/swap.c:put_pages_list(): reinitialise the page list 2021-11-20 10:35:54 -08:00
swapfile.c Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
truncate.c mm/truncate.c: remove unneeded variable 2022-01-15 16:30:26 +02:00
usercopy.c mm/usercopy.c: delete duplicated word 2020-08-12 10:57:58 -07:00
userfaultfd.c mm: shmem: don't truncate page if memory failure happens 2022-01-15 16:30:26 +02:00
util.c mm: Remove folio_test_single 2021-11-17 10:36:35 -05:00
vmacache.c kernel: better document the use_mm/unuse_mm API contract 2020-06-10 19:14:18 -07:00
vmalloc.c memcg: add per-memcg vmalloc stat 2022-01-15 16:30:27 +02:00
vmpressure.c mm/vmpressure: fix data-race with memcg->socket_pressure 2021-11-06 13:30:40 -07:00
vmscan.c mm: vmscan: reduce throttling due to a failure to make progress -fix 2021-12-31 13:12:55 -08:00
vmstat.c mm: vmstat.c: make extfrag_index show more pretty 2021-11-06 13:30:42 -07:00
workingset.c Merge branch 'akpm' (patches from Andrew) 2021-11-09 10:11:53 -08:00
z3fold.c mm/z3fold: add kerneldoc fields for z3fold_pool 2021-07-01 11:06:03 -07:00
zbud.c mm/zbud: add kerneldoc fields for zbud_pool 2021-07-01 11:06:03 -07:00
zpool.c mm: fix typos in comments 2021-05-07 00:26:35 -07:00
zsmalloc.c mm/zsmalloc.c: close race window between zs_pool_dec_isolated() and zs_unregister_migration() 2021-11-06 13:30:43 -07:00
zswap.c mm/zswap.c: fix two bugs in zswap_writeback_entry() 2021-06-30 20:47:31 -07:00