mmotm 2020-01-21-13-28 uploaded

mmotm 2020-01-21-13-28 uploaded

[akpm]

The mm-of-the-moment snapshot 2020-01-21-13-28 has been uploaded to

   http://www.ozlabs.org/~akpm/mmotm/

mmotm-readme.txt says

README for mm-of-the-moment:

http://www.ozlabs.org/~akpm/mmotm/

This is a snapshot of my -mm patch queue.  Uploaded at random hopefully
more than once a week.

You will need quilt to apply these patches to the latest Linus release (5.x
or 5.x-rcY).  The series file is in broken-out.tar.gz and is duplicated in
http://ozlabs.org/~akpm/mmotm/series

The file broken-out.tar.gz contains two datestamp files: .DATE and
.DATE-yyyy-mm-dd-hh-mm-ss.  Both contain the string yyyy-mm-dd-hh-mm-ss,
followed by the base kernel version against which this patch series is to
be applied.

This tree is partially included in linux-next.  To see which patches are
included in linux-next, consult the `series' file.  Only the patches
within the #NEXT_PATCHES_START/#NEXT_PATCHES_END markers are included in
linux-next.


A full copy of the full kernel tree with the linux-next and mmotm patches
already applied is available through git within an hour of the mmotm
release.  Individual mmotm releases are tagged.  The master branch always
points to the latest release, so it's constantly rebasing.

	https://github.com/hnaz/linux-mm

The directory http://www.ozlabs.org/~akpm/mmots/ (mm-of-the-second)
contains daily snapshots of the -mm tree.  It is updated more frequently
than mmotm, and is untested.

A git copy of this tree is also available at

	https://github.com/hnaz/linux-mm



This mmotm tree contains the following patches against 5.5-rc7:
(patches marked "*" will be included in linux-next)

  origin.patch
* proc-kpageflags-prevent-an-integer-overflow-in-stable_page_flags.patch
* proc-kpageflags-do-not-use-uninitialized-struct-pages.patch
* x86-mm-split-vmalloc_sync_all.patch
* revert-ipcsem-remove-uneeded-sem_undo_list-lock-usage-in-exit_sem.patch
* mm-fix-uninitialized-memmaps-on-a-partially-populated-last-section.patch
* fs-proc-pagec-allow-inspection-of-last-section-and-fix-end-detection.patch
* mm-initialize-memmap-of-unavailable-memory-directly.patch
* mm-thp-remove-the-defer-list-related-code-since-this-will-not-happen.patch
* lib-test_bitmap-correct-test-data-offsets-for-32-bit.patch
* watchdog-fix-uaf-in-reboot-notifier-handling-in-watchdog-core-code.patch
* memcg-fix-a-crash-in-wb_workfn-when-a-device-disappears.patch
* mm-mempolicyc-fix-out-of-bounds-write-in-mpol_parse_str.patch
* scripts-spellingtxt-add-more-spellings-to-spellingtxt.patch
* scripts-spellingtxt-add-issus-typo.patch
* fs-ocfs-remove-unnecessary-assertion-in-dlm_migrate_lockres.patch
* ocfs2-remove-unneeded-semicolon.patch
* ocfs2-make-local-header-paths-relative-to-c-files.patch
* ocfs2-dlm-remove-redundant-assignment-to-ret.patch
* ocfs2-dlm-move-bits_to_bytes-to-bitopsh-for-wider-use.patch
* ocfs2-fix-a-null-pointer-dereference-when-call-ocfs2_update_inode_fsync_trans.patch
* ocfs2-use-ocfs2_update_inode_fsync_trans-to-access-t_tid-in-handle-h_transaction.patch
* ramfs-support-o_tmpfile.patch
  mm.patch
* mm-avoid-slub-allocation-while-holding-list_lock.patch
* kmemleak-turn-kmemleak_lock-and-object-lock-to-raw_spinlock_t.patch
* mm-debug-always-print-flags-in-dump_page.patch
* mm-clean-up-filemap_write_and_wait.patch
* mm-fix-gup_pud_range.patch
* mm-gupc-use-is_vm_hugetlb_page-to-check-whether-to-follow-huge.patch
* mm-gup-factor-out-duplicate-code-from-four-routines.patch
* mm-gup-move-try_get_compound_head-to-top-fix-minor-issues.patch
* mm-cleanup-__put_devmap_managed_page-vs-page_free.patch
* mm-devmap-refactor-1-based-refcounting-for-zone_device-pages.patch
* goldish_pipe-rename-local-pin_user_pages-routine.patch
* mm-fix-get_user_pages_remotes-handling-of-foll_longterm.patch
* vfio-fix-foll_longterm-use-simplify-get_user_pages_remote-call.patch
* mm-gup-allow-foll_force-for-get_user_pages_fast.patch
* ib-umem-use-get_user_pages_fast-to-pin-dma-pages.patch
* media-v4l2-core-set-pages-dirty-upon-releasing-dma-buffers.patch
* mm-gup-introduce-pin_user_pages-and-foll_pin.patch
* goldish_pipe-convert-to-pin_user_pages-and-put_user_page.patch
* ib-corehwumem-set-foll_pin-via-pin_user_pages-fix-up-odp.patch
* mm-process_vm_access-set-foll_pin-via-pin_user_pages_remote.patch
* drm-via-set-foll_pin-via-pin_user_pages_fast.patch
* fs-io_uring-set-foll_pin-via-pin_user_pages.patch
* net-xdp-set-foll_pin-via-pin_user_pages.patch
* media-v4l2-core-pin_user_pages-foll_pin-and-put_user_page-conversion.patch
* vfio-mm-pin_user_pages-foll_pin-and-put_user_page-conversion.patch
* powerpc-book3s64-convert-to-pin_user_pages-and-put_user_page.patch
* mm-gup_benchmark-use-proper-foll_write-flags-instead-of-hard-coding-1.patch
* mm-tree-wide-rename-put_user_page-to-unpin_user_page.patch
* mm-cleanup-some-useless-code.patch
* mm-vmscan-expose-cgroup_ino-for-memcg-reclaim-tracepoints.patch
* mm-pgmap-use-correct-alignment-when-looking-at-first-pfn-from-a-region.patch
* mm-mmap-fix-the-adjusted-length-error.patch
* mm-page_vma_mappedc-explicitly-compare-pfn-for-normal-hugetlbfs-and-thp-page.patch
* mm-mremap-format-the-check-in-move_normal_pmd-same-as-move_huge_pmd.patch
* mm-mremap-it-is-sure-to-have-enough-space-when-extent-meets-requirement.patch
* mm-mremap-use-pmd_addr_end-to-calculate-next-in-move_page_tables.patch
* mm-mremap-calculate-extent-in-one-place.patch
* mm-mremap-start-addresses-are-properly-aligned.patch
* mm-tracing-print-symbol-name-for-kmem_alloc_node-call_site-events.patch
* mm-early_remap-use-%pa-to-print-resource_size_t-variables.patch
* mm-page_alloc-skip-non-present-sections-on-zone-initialization.patch
* mm-page_alloc-fix-and-rework-pfn-handling-in-memmap_init_zone.patch
* mm-factor-out-next_present_section_nr.patch
* mm-remove-the-memory-isolate-notifier.patch
* mm-remove-count-parameter-from-has_unmovable_pages.patch
* mm-vmscanc-remove-unused-return-value-of-shrink_node.patch
* mm-vmscan-remove-prefetch_prev_lru_page.patch
* mm-vmscan-remove-unused-reclaim_off-reclaim_zone.patch
* mm-vmscan-remove-unused-reclaim_off-reclaim_zone-fix.patch
* tools-vm-slabinfo-fix-sanity-checks-enabling.patch
* mm-memblock-define-memblock_physmem_add.patch
* memblock-use-__func__-in-remaining-memblock_dbg-call-sites.patch
* mm-oom-avoid-printk-iteration-under-rcu.patch
* mm-oom-avoid-printk-iteration-under-rcu-fix.patch
* mm-oom-dump-stack-of-victim-when-reaping-failed.patch
* mm-huge_memoryc-use-head-to-check-huge-zero-page.patch
* mm-huge_memoryc-use-head-to-emphasize-the-purpose-of-page.patch
* mm-huge_memoryc-reduce-critical-section-protected-by-split_queue_lock.patch
* mm-migrate-remove-useless-mask-of-start-address.patch
* mm-migrate-clean-up-some-minor-coding-style.patch
* mm-migrate-add-stable-check-in-migrate_vma_insert_page.patch
* mm-thp-fix-defrag-setting-if-newline-is-not-used.patch
* mm-get-rid-of-odd-jump-labels-in-find_mergeable_anon_vma.patch
* drivers-base-memoryc-cache-blocks-in-radix-tree-to-accelerate-lookup.patch
* drivers-base-memoryc-cache-blocks-in-radix-tree-to-accelerate-lookup-fix-2.patch
* mm-memmap_init-update-variable-name-in-memmap_init_zone.patch
* mm-memory_hotplug-poison-memmap-in-remove_pfn_range_from_zone.patch
* mm-memory_hotplug-we-always-have-a-zone-in-find_smallestbiggest_section_pfn.patch
* mm-memory_hotplug-dont-check-for-all-holes-in-shrink_zone_span.patch
* mm-memory_hotplug-drop-local-variables-in-shrink_zone_span.patch
* mm-memory_hotplug-cleanup-__remove_pages.patch
* mm-memory_hotplug-drop-valid_start-valid_end-from-test_pages_in_a_zone.patch
* mm-memory_hotplug-pass-in-nid-to-online_pages.patch
* mm-hotplug-silence-a-lockdep-splat-with-printk.patch
* zswap-add-allocation-hysteresis-if-pool-limit-is-hit.patch
* zswap-potential-null-dereference-on-error-in-init_zswap.patch
* mm-clean-up-obsolete-check-on-space-in-page-flags.patch
* mm-remove-dead-code-totalram_pages_set.patch
* mm-drop-elements-hw-and-phys_callback-from-struct-memory_block.patch
* mm-fix-comments-related-to-node-reclaim.patch
* zram-try-to-avoid-worst-case-scenario-on-same-element-pages.patch
* zram-try-to-avoid-worst-case-scenario-on-same-element-pages-update.patch
* zram-fix-error-return-codes-not-being-returned-in-writeback_store.patch
* info-task-hung-in-generic_file_write_iter.patch
* info-task-hung-in-generic_file_write-fix.patch
* kernel-hung_taskc-monitor-killed-tasks.patch
* y2038-remove-ktime-to-from-timespec-timeval-conversion.patch
* y2038-remove-unused-time32-interfaces.patch
* y2038-hide-timeval-timespec-itimerval-itimerspec-types.patch
* add-helpers-for-kelvin-to-from-celsius-conversion.patch
* acpi-thermal-switch-to-use-linux-unitsh-helpers.patch
* platform-x86-asus-wmi-switch-to-use-linux-unitsh-helpers.patch
* platform-x86-intel_menlow-switch-to-use-linux-unitsh-helpers.patch
* thermal-int340x-switch-to-use-linux-unitsh-helpers.patch
* thermal-intel_pch-switch-to-use-linux-unitsh-helpers.patch
* nvme-hwmon-switch-to-use-linux-unitsh-helpers.patch
* thermal-remove-kelvin-to-from-celsius-conversion-helpers-from-linux-thermalh.patch
* iwlegacy-use-linux-unitsh-helpers.patch
* iwlegacy-use-linux-unitsh-helpers-fix.patch
* iwlwifi-use-linux-unitsh-helpers.patch
* thermal-armada-remove-unused-to_mcelsius-macro.patch
* iio-adc-qcom-vadc-common-use-linux-unitsh-helpers.patch
* lib-zlib-add-s390-hardware-support-for-kernel-zlib_deflate.patch
* s390-boot-rename-heap_size-due-to-name-collision.patch
* lib-zlib-add-s390-hardware-support-for-kernel-zlib_inflate.patch
* s390-boot-add-dfltcc=-kernel-command-line-parameter.patch
* lib-zlib-add-zlib_deflate_dfltcc_enabled-function.patch
* btrfs-use-larger-zlib-buffer-for-s390-hardware-compression.patch
* lib-scatterlist-adjust-indentation-in-__sg_alloc_table.patch
* uapi-rename-ext2_swab-to-swab-and-share-globally-in-swabh.patch
* lib-find_bitc-join-_find_next_bit_le.patch
* lib-find_bitc-uninline-helper-_find_next_bit.patch
* string-add-stracpy-and-stracpy_pad-mechanisms.patch
* documentation-checkpatch-prefer-stracpy-strscpy-over-strcpy-strlcpy-strncpy.patch
* elf-smaller-code-generation-around-auxv-vector-fill.patch
* elf-fix-start_code-calculation.patch
* elf-dont-copy-elf-header-around.patch
* elf-better-codegen-around-current-mm.patch
* elf-make-bad_addr-unlikely.patch
* elf-coredump-allocate-core-elf-header-on-stack.patch
* elf-coredump-delete-duplicated-overflow-check.patch
* elf-coredump-allow-process-with-empty-address-space-to-coredump.patch
* init-mainc-log-arguments-and-environment-passed-to-init.patch
* init-mainc-remove-unnecessary-repair_env_string-in-do_initcall_level.patch
* init-mainc-fix-quoted-value-handling-in-unknown_bootoption.patch
* init-fix-misleading-this-architecture-does-not-have-kernel-memory-protection-message.patch
* reiserfs-prevent-null-pointer-dereference-in-reiserfs_insert_item.patch
* execve-warn-if-process-starts-with-executable-stack.patch
* io-mapping-use-phys_pfn-macro-in-io_mapping_map_atomic_wc.patch
* aio-simplify-read_events.patch
* kcov-ignore-fault-inject-and-stacktrace.patch
* smp_mb__beforeafter_atomic-update-documentation.patch
* ipc-mqueuec-remove-duplicated-code.patch
* ipc-mqueuec-update-document-memory-barriers.patch
* ipc-msgc-update-and-document-memory-barriers.patch
* ipc-semc-document-and-update-memory-barriers.patch
* ipc-consolidate-all-xxxctl_down-functions.patch
* ipc-consolidate-all-xxxctl_down-functions-fix.patch
  linux-next.patch
  linux-next-fix.patch
* drivers-block-null_blk_mainc-fix-layout.patch
* drivers-block-null_blk_mainc-fix-uninitialized-var-warnings.patch
* pinctrl-fix-pxa2xxc-build-warnings.patch
* mm-remove-__krealloc.patch
* mm-add-generic-pd_leaf-macros.patch
* arc-mm-add-pd_leaf-definitions.patch
* arm-mm-add-pd_leaf-definitions.patch
* arm64-mm-add-pd_leaf-definitions.patch
* mips-mm-add-pd_leaf-definitions.patch
* powerpc-mm-add-pd_leaf-definitions.patch
* riscv-mm-add-pd_leaf-definitions.patch
* s390-mm-add-pd_leaf-definitions.patch
* sparc-mm-add-pd_leaf-definitions.patch
* x86-mm-add-pd_leaf-definitions.patch
* mm-pagewalk-add-p4d_entry-and-pgd_entry.patch
* mm-pagewalk-add-p4d_entry-and-pgd_entry-fix.patch
* mm-pagewalk-allow-walking-without-vma.patch
* mm-pagewalk-dont-lock-ptes-for-walk_page_range_novma.patch
* mm-pagewalk-fix-termination-condition-in-walk_pte_range.patch
* mm-pagewalk-add-depth-parameter-to-pte_hole.patch
* x86-mm-point-to-struct-seq_file-from-struct-pg_state.patch
* x86-mmefi-convert-ptdump_walk_pgd_level-to-take-a-mm_struct.patch
* x86-mm-convert-ptdump_walk_pgd_level_debugfs-to-take-an-mm_struct.patch
* mm-add-generic-ptdump.patch
* x86-mm-convert-dump_pagetables-to-use-walk_page_range.patch
* arm64-mm-convert-mm-dumpc-to-use-walk_page_range.patch
* arm64-mm-display-non-present-entries-in-ptdump.patch
* mm-ptdump-reduce-level-numbers-by-1-in-note_page.patch
* x86-mm-avoid-allocating-struct-mm_struct-on-the-stack.patch
* x86-mm-avoid-allocating-struct-mm_struct-on-the-stack-fix.patch
* powerpc-mmu_gather-enable-rcu_table_free-even-for-smp-case.patch
* mm-mmu_gather-invalidate-tlb-correctly-on-batch-allocation-failure-and-flush.patch
* asm-generic-tlb-avoid-potential-double-flush.patch
* asm-gemeric-tlb-remove-stray-function-declarations.patch
* asm-generic-tlb-add-missing-config-symbol.patch
* asm-generic-tlb-rename-have_rcu_table_free.patch
* asm-generic-tlb-rename-have_mmu_gather_page_size.patch
* asm-generic-tlb-rename-have_mmu_gather_no_gather.patch
* asm-generic-tlb-provide-mmu_gather_table_free.patch
* proc-decouple-proc-from-vfs-with-struct-proc_ops.patch
* proc-convert-everything-to-struct-proc_ops.patch
* proc-convert-everything-to-struct-proc_ops-fix.patch
* lib-string-add-strnchrnul.patch
* bitops-more-bits_to_-macros.patch
* lib-add-test-for-bitmap_parse.patch
* lib-add-test-for-bitmap_parse-fix.patch
* lib-add-test-for-bitmap_parse-fix-2.patch
* lib-make-bitmap_parse_user-a-wrapper-on-bitmap_parse.patch
* lib-rework-bitmap_parse.patch
* lib-new-testcases-for-bitmap_parse_user.patch
* cpumask-dont-calculate-length-of-the-input-string.patch
* treewide-remove-redundent-is_err-before-error-code-check.patch
* arm-dma-api-fix-max_pfn-off-by-one-error-in-__dma_supported.patch
* drivers-tty-serial-sh-scic-suppress-warning.patch
* fix-read-buffer-overflow-in-delta-ipc.patch
  make-sure-nobodys-leaking-resources.patch
  releasing-resources-with-children.patch
  mutex-subsystem-synchro-test-module.patch
  kernel-forkc-export-kernel_thread-to-modules.patch
  workaround-for-a-pci-restoring-bug.patch

Re: mmotm 2020-01-21-13-28 uploaded (convert everything to struct proc_ops)

[Randy Dunlap]

On 1/21/20 1:29 PM, akpm@linux-foundation.org wrote:
> The mm-of-the-moment snapshot 2020-01-21-13-28 has been uploaded to
> 
>    http://www.ozlabs.org/~akpm/mmotm/
> 
> mmotm-readme.txt says
> 
> README for mm-of-the-moment:
> 
> http://www.ozlabs.org/~akpm/mmotm/
> 
> This is a snapshot of my -mm patch queue.  Uploaded at random hopefully
> more than once a week.

NULL seems to be misspelled as NUL in the proc-convert-everything-to-struct-proc_ops.patch
patch for kernel/sched/psi.c:

 static int __init psi_proc_init(void)
 {
 	if (psi_enable) {
 		proc_mkdir("pressure", NULL);
-		proc_create("pressure/io", 0, NULL, &psi_io_fops);
-		proc_create("pressure/memory", 0, NULL, &psi_memory_fops);
-		proc_create("pressure/cpu", 0, NULL, &psi_cpu_fops);
+		proc_create("pressure/io", 0, NULL, &psi_io_proc_ops);
+		proc_create("pressure/memory", 0, NUL, &psi_memory_proc_ops); <<<<<<<<<<
+		proc_create("pressure/cpu", 0, NULL &psi_cpu_proc_ops);

also missing a comma above...

 	}
 	return 0;


../kernel/sched/psi.c: In function ‘psi_proc_init’:
../kernel/sched/psi.c:1286:37: error: ‘NUL’ undeclared (first use in this function); did you mean ‘_UL’?
   proc_create("pressure/memory", 0, NUL, &psi_memory_proc_ops);
                                     ^~~
                                     _UL
../kernel/sched/psi.c:1286:37: note: each undeclared identifier is reported only once for each function it appears in
../kernel/sched/psi.c:1287:39: error: invalid operands to binary & (have ‘void *’ and ‘const struct proc_ops’)
   proc_create("pressure/cpu", 0, NULL &psi_cpu_proc_ops);
                                       ^
../kernel/sched/psi.c:1287:3: error: too few arguments to function ‘proc_create’
   proc_create("pressure/cpu", 0, NULL &psi_cpu_proc_ops);
   ^~~~~~~~~~~
In file included from ../kernel/sched/psi.c:133:0:
../include/linux/proc_fs.h:64:24: note: declared here
 struct proc_dir_entry *proc_create(const char *name, umode_t mode, struct proc_dir_entry *parent, const struct proc_ops *proc_ops);
                        ^~~~~~~~~~~


-- 
~Randy
Reported-by: Randy Dunlap <rdunlap@infradead.org>

Re: mmotm 2020-01-21-13-28 uploaded (struct proc_ops)

[Randy Dunlap]

On 1/21/20 1:29 PM, akpm@linux-foundation.org wrote:
> The mm-of-the-moment snapshot 2020-01-21-13-28 has been uploaded to
> 
>    http://www.ozlabs.org/~akpm/mmotm/
> 
> mmotm-readme.txt says
> 
> README for mm-of-the-moment:
> 
> http://www.ozlabs.org/~akpm/mmotm/
> 
> This is a snapshot of my -mm patch queue.  Uploaded at random hopefully
> more than once a week.

and when CONFIG_PROC_FS is not set/enabled, kernel/sched/psi.c gets:

../kernel/sched/psi.c: In function ‘psi_proc_init’:
../kernel/sched/psi.c:1287:56: error: macro "proc_create" requires 4 arguments, but only 3 given
   proc_create("pressure/cpu", 0, NULL &psi_cpu_proc_ops);
                                                        ^
../kernel/sched/psi.c:1287:3: error: ‘proc_create’ undeclared (first use in this function); did you mean ‘sock_create’?
   proc_create("pressure/cpu", 0, NULL &psi_cpu_proc_ops);
   ^~~~~~~~~~~
   sock_create


-- 
~Randy

Re: mmotm 2020-01-21-13-28 uploaded (struct proc_ops)

[Alexey Dobriyan]

On Tue, Jan 21, 2020 at 07:19:22PM -0800, Randy Dunlap wrote:
> On 1/21/20 1:29 PM, akpm@linux-foundation.org wrote:
> > The mm-of-the-moment snapshot 2020-01-21-13-28 has been uploaded to
> > 
> >    http://www.ozlabs.org/~akpm/mmotm/
> > 
> > mmotm-readme.txt says
> > 
> > README for mm-of-the-moment:
> > 
> > http://www.ozlabs.org/~akpm/mmotm/
> > 
> > This is a snapshot of my -mm patch queue.  Uploaded at random hopefully
> > more than once a week.
> 
> and when CONFIG_PROC_FS is not set/enabled, kernel/sched/psi.c gets:
> 
> ../kernel/sched/psi.c: In function ‘psi_proc_init’:
> ../kernel/sched/psi.c:1287:56: error: macro "proc_create" requires 4 arguments, but only 3 given
>    proc_create("pressure/cpu", 0, NULL &psi_cpu_proc_ops);

Thanks, Randy. I've checked current mmotm, it looks like no more "NUL"s
exist.