| Message ID | 20230427153345.451d86681f9c6775ea579e5a@linux-foundation.org (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [GIT,PULL] MM updates for 6.4-rc1 | expand |
On Thu, Apr 27, 2023 at 3:33 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > - Suren Baghdasaryan has improved mmap_lock scalability by switching to > per-VMA locking. .. related to this, we have that new PER_VMA_LOCK_STATS config entry, which is 'default y' and has basically no help test. Please don't do that. I don't think any of the VM debugging stuff should likely be 'default y' in the first place, but if they are, they should most definitely have a good *explanation* for why they should be on for a normal user. Linus
The pull request you sent on Thu, 27 Apr 2023 15:33:45 -0700:
> https://lkml.kernel.org/r/CAKXUXMyVeg2kQK_edKHtMD3eADrDK_PKhCSVkMrLDdYgTQQ5rg@mail.gmail.com Thanks.
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/7fa8a8ee9400fe8ec188426e40e481717bc5e924
Thank you!
On Thu, Apr 27, 2023 at 3:33 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm tags/mm-stable-2023-04-27-15-30 Ok, so all the merge conflicts looked straightforward enough (except the one I asked Vlastimil to look at - and that conflict was tiny and straightforward too, it was just in a really grotty place). However, let's not get cocky - so I'd ask people double-check my conflict resolution, even if it looked fairly straightforward. Mistakes happen. Most of the bulk of the conflicts were around __filemap_get_folio() now returning an ERR_PTR, particularly then with Willy doing the ext4 folio conversion. So Christoph, Willy, mind just double-checking me? Linus
On Thu, Apr 27, 2023 at 8:15 PM Linus Torvalds <torvalds@linux-foundation.org> wrote: > > Most of the bulk of the conflicts were around __filemap_get_folio() > now returning an ERR_PTR, particularly then with Willy doing the ext4 > folio conversion. > > So Christoph, Willy, mind just double-checking me? Just to clarify: I do take a look at linux-next, but I do it as an after-the-fact "let's double-check my resolution", and some of my resolutions don't end up being identical because I end up doing things differently. For example, I found the linux-next resolution in ext4_read_merkle_tree_page() to be nonsensical. I think it probably generates the same code as my resolution, but doing "&folio->page" on an ERR_PTR folio is some funky funky sh*t. Only after looking at the linux-next resolution did I grep around and notice that that kind of funky struff had already made it into mainline in non-conflicting places. Willy - it seems to be you spreading that crazy pattern. Please stop. Anyway. I did some things differently, and while I think my resolution is the right one, the fact that it is different could also just mean that I'm confused. Linus
On Thu, Apr 27, 2023 at 08:15:56PM -0700, Linus Torvalds wrote: > Most of the bulk of the conflicts were around __filemap_get_folio() > now returning an ERR_PTR, particularly then with Willy doing the ext4 > folio conversion. > > So Christoph, Willy, mind just double-checking me? The merge looks fine to me.
On Thu, Apr 27, 2023 at 8:03 PM Linus Torvalds <torvalds@linux-foundation.org> wrote: > > On Thu, Apr 27, 2023 at 3:33 PM Andrew Morton <akpm@linux-foundation.org> wrote: > > > > - Suren Baghdasaryan has improved mmap_lock scalability by switching to > > per-VMA locking. > > .. related to this, we have that new PER_VMA_LOCK_STATS config entry, > which is 'default y' and has basically no help test. > > Please don't do that. > > I don't think any of the VM debugging stuff should likely be 'default > y' in the first place, but if they are, they should most definitely > have a good *explanation* for why they should be on for a normal user. Understood. I wanted these stats enabled by default to be able to identify possible pathological cases and to also let users disable them if they can't tolerate even a small overhead in the pagefault path. Should I document this reasoning for the config option? > > Linus
On Fri, Apr 28, 2023 at 9:03 AM Suren Baghdasaryan <surenb@google.com> wrote: > > I wanted these stats enabled by default to be able to identify > possible pathological cases and to also let users disable them if they > can't tolerate even a small overhead in the pagefault path. Should I > document this reasoning for the config option? You should document what the stats actually count (at a high enough level for a user to understand), and why anybody would want to keep them on. Honestly, 99% of the time, these are things that *developers* think they might want, but that nobody else will ever ever use. Really, ask yourself if a normal user would ever look at them? Now, ask yourself whether this might be something that a cloud provider would want to look at to gather statistics. And if it's the latter case, then it should be "default n", because the default should be for the people who DO NOT KNOW, AND DO NOT CARE. The cloud provider will be using a custom config anyway. The default is irrelevant for that use. The use that *matters* is literally the clueless end user who I bet will never look at these numbers, and will never be asked for them. Linus
On Fri, Apr 28, 2023 at 9:08 AM Linus Torvalds <torvalds@linux-foundation.org> wrote: > > On Fri, Apr 28, 2023 at 9:03 AM Suren Baghdasaryan <surenb@google.com> wrote: > > > > I wanted these stats enabled by default to be able to identify > > possible pathological cases and to also let users disable them if they > > can't tolerate even a small overhead in the pagefault path. Should I > > document this reasoning for the config option? > > You should document what the stats actually count (at a high enough > level for a user to understand), and why anybody would want to keep > them on. > > Honestly, 99% of the time, these are things that *developers* think > they might want, but that nobody else will ever ever use. > > Really, ask yourself if a normal user would ever look at them? > > Now, ask yourself whether this might be something that a cloud > provider would want to look at to gather statistics. > > And if it's the latter case, then it should be "default n", because > the default should be for the people who DO NOT KNOW, AND DO NOT CARE. > > The cloud provider will be using a custom config anyway. The default > is irrelevant for that use. The use that *matters* is literally the > clueless end user who I bet will never look at these numbers, and will > never be asked for them. Ok, sounds like this should be 'default n'. I'll prepare a patch. Thanks! > > Linus
On Fri, Apr 28, 2023 at 9:14 AM Suren Baghdasaryan <surenb@google.com> wrote: > > On Fri, Apr 28, 2023 at 9:08 AM Linus Torvalds > <torvalds@linux-foundation.org> wrote: > > > > On Fri, Apr 28, 2023 at 9:03 AM Suren Baghdasaryan <surenb@google.com> wrote: > > > > > > I wanted these stats enabled by default to be able to identify > > > possible pathological cases and to also let users disable them if they > > > can't tolerate even a small overhead in the pagefault path. Should I > > > document this reasoning for the config option? > > > > You should document what the stats actually count (at a high enough > > level for a user to understand), and why anybody would want to keep > > them on. > > > > Honestly, 99% of the time, these are things that *developers* think > > they might want, but that nobody else will ever ever use. > > > > Really, ask yourself if a normal user would ever look at them? > > > > Now, ask yourself whether this might be something that a cloud > > provider would want to look at to gather statistics. > > > > And if it's the latter case, then it should be "default n", because > > the default should be for the people who DO NOT KNOW, AND DO NOT CARE. > > > > The cloud provider will be using a custom config anyway. The default > > is irrelevant for that use. The use that *matters* is literally the > > clueless end user who I bet will never look at these numbers, and will > > never be asked for them. > > Ok, sounds like this should be 'default n'. I'll prepare a patch. Thanks! Should I send a replacement patch for "mm: introduce per-VMA lock statistics" or a followup patch fixing it? > > > > > Linus
On Fri, Apr 28, 2023 at 9:17 AM Suren Baghdasaryan <surenb@google.com> wrote: > > Should I send a replacement patch for "mm: introduce per-VMA lock > statistics" or a followup patch fixing it? I've merged the MM pull request, so it's all in the kernel now, but I'd like to see a follow-up patch with more of a help text and that 'default n'. Linus
On Fri, Apr 28, 2023 at 9:20 AM Linus Torvalds <torvalds@linux-foundation.org> wrote: > > On Fri, Apr 28, 2023 at 9:17 AM Suren Baghdasaryan <surenb@google.com> wrote: > > > > Should I send a replacement patch for "mm: introduce per-VMA lock > > statistics" or a followup patch fixing it? > > I've merged the MM pull request, so it's all in the kernel now, but > I'd like to see a follow-up patch with more of a help text and that > 'default n'. Posted https://lore.kernel.org/all/20230428173533.18158-1-surenb@google.com/ to address this. > > Linus
On Thu, Apr 27, 2023 at 03:33:45PM -0700, Andrew Morton wrote: > > Linus, please merge this cycles's batch of MM changes. This is almost > everything - I'll have another 5-10 patches next week. (cut) > The following changes since commit ef832747a82dfbc22a3702219cc716f449b24e4a: > > nilfs2: initialize unused bytes in segment summary blocks (2023-04-18 14:22:14 -0700) > > are available in the Git repository at: > > git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm tags/mm-stable-2023-04-27-15-30 > > for you to fetch changes up to 4d4b6d66db63ceed399f1fb1a4b24081d2590eb1: > > mm,unmap: avoid flushing TLB in batch if PTE is inaccessible (2023-04-27 13:42:16 -0700) > > ---------------------------------------------------------------- Hello Andrew, It seems like the changes in mm/dmapool.c somehow got omitted in this PR. $ git log --oneline 4d4b6d66db63ceed399f1fb1a4b24081d2590eb1 --not v6.3 mm/dmapool.c 2d55c16c0c54 dmapool: create/destroy cleanup a4de12a032fa dmapool: link blocks across pages 9d062a8a4c6d dmapool: don't memset on free twice 887aef615818 dmapool: simplify freeing 2591b516533b dmapool: consolidate page initialization 36d1a28921a4 dmapool: rearrange page alloc failure handling 52e7d5653979 dmapool: move debug code to own functions 19f504584038 dmapool: speedup DMAPOOL_DEBUG with init_on_alloc 347e4e44c0a9 dmapool: cleanup integer types 65216545436b dmapool: use sysfs_emit() instead of scnprintf() 7f796d141c07 dmapool: remove checks for dev == NULL $ git diff 4d4b6d66db63ceed399f1fb1a4b24081d2590eb1 v6.3 mm/dmapool.c <empty> It seems like the final commit, 2d55c16c0c54 ("dmapool: create/destroy cleanup") somehow reverted all the previous changes to this file. Looking at how that patch looked like on the list: https://patchwork.kernel.org/project/linux-mm/patch/20230126215125.4069751-13-kbusch@meta.com/ the diff is way smaller than what can be seen in 2d55c16c0c54. Additionally, you might want to pick up: https://patchwork.kernel.org/project/linux-mm/patch/20230221165400.1595247-1-kbusch@meta.com/ as it has a Fixes tag that references one of the commits above. Kind regards, Niklas
On Thu, 4 May 2023 10:39:51 +0000 Niklas Cassel <Niklas.Cassel@wdc.com> wrote: > On Thu, Apr 27, 2023 at 03:33:45PM -0700, Andrew Morton wrote: > > > > Linus, please merge this cycles's batch of MM changes. This is almost > > everything - I'll have another 5-10 patches next week. > > (cut) > > > The following changes since commit ef832747a82dfbc22a3702219cc716f449b24e4a: > > > > nilfs2: initialize unused bytes in segment summary blocks (2023-04-18 14:22:14 -0700) > > > > are available in the Git repository at: > > > > git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm tags/mm-stable-2023-04-27-15-30 > > > > for you to fetch changes up to 4d4b6d66db63ceed399f1fb1a4b24081d2590eb1: > > > > mm,unmap: avoid flushing TLB in batch if PTE is inaccessible (2023-04-27 13:42:16 -0700) > > > > ---------------------------------------------------------------- > > Hello Andrew, > > It seems like the changes in mm/dmapool.c somehow got omitted in this PR. > > $ git log --oneline 4d4b6d66db63ceed399f1fb1a4b24081d2590eb1 --not v6.3 mm/dmapool.c > 2d55c16c0c54 dmapool: create/destroy cleanup > a4de12a032fa dmapool: link blocks across pages > 9d062a8a4c6d dmapool: don't memset on free twice > 887aef615818 dmapool: simplify freeing > 2591b516533b dmapool: consolidate page initialization > 36d1a28921a4 dmapool: rearrange page alloc failure handling > 52e7d5653979 dmapool: move debug code to own functions > 19f504584038 dmapool: speedup DMAPOOL_DEBUG with init_on_alloc > 347e4e44c0a9 dmapool: cleanup integer types > 65216545436b dmapool: use sysfs_emit() instead of scnprintf() > 7f796d141c07 dmapool: remove checks for dev == NULL > > $ git diff 4d4b6d66db63ceed399f1fb1a4b24081d2590eb1 v6.3 mm/dmapool.c > <empty> > > It seems like the final commit, 2d55c16c0c54 ("dmapool: create/destroy > cleanup") somehow reverted all the previous changes to this file. > > > Looking at how that patch looked like on the list: > https://patchwork.kernel.org/project/linux-mm/patch/20230126215125.4069751-13-kbusch@meta.com/ > the diff is way smaller than what can be seen in 2d55c16c0c54. Well I don't know how I did this, sorry. The patch "dmapool: create/destroy cleanup" was OK in mm-unstable (and linux-next) from Jan 26 to Feb 26, so the series has had decent linux-next testing. It became messed up on Feb 26. I've reconstituted dmapool: remove checks for dev == NULL dmapool: use sysfs_emit() instead of scnprintf() dmapool: cleanup integer types dmapool: speedup DMAPOOL_DEBUG with init_on_alloc dmapool: move debug code to own functions dmapool: rearrange page alloc failure handling dmapool: consolidate page initialization dmapool: simplify freeing dmapool: don't memset on free twice dmapool: link blocks across pages dmapool: create/destroy cleanup and pushed the result out to the mm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm. 3a64f2e22553 dmapool: create/destroy cleanup 1d1e67d45a37 dmapool: link blocks across pages 7e54c3f0e123 dmapool: don't memset on free twice cb569a63de3b dmapool: simplify freeing 874938254ae7 dmapool: consolidate page initialization b97304656ad5 dmapool: rearrange page alloc failure handling c31e8ec45299 dmapool: move debug code to own functions 1e05e5bdce74 dmapool: speedup DMAPOOL_DEBUG with init_on_alloc 7ea3ff961459 dmapool: cleanup integer types adf388b29d25 dmapool: use sysfs_emit() instead of scnprintf() 8491f7f301ad dmapool: remove checks for dev == NULL Please check that all is as expected. > Additionally, you might want to pick up: > https://patchwork.kernel.org/project/linux-mm/patch/20230221165400.1595247-1-kbusch@meta.com/ > as it has a Fixes tag that references one of the commits above. That fix has been folded into "dmapool: link blocks across pages".
On Thu, May 04, 2023 at 07:10:22PM -0700, Andrew Morton wrote:
> Please check that all is as expected.
Thanks for the quick turn-around. This looks correct and passes my
sanity tests.
Linus, please merge this cycles's batch of MM changes. This is almost everything - I'll have another 5-10 patches next week. I'm seeing a few conflicts against your present tree: arch/arm/configs/oxnas_v6_defconfig: just remove this file fs/iomap/buffered-io.c: linux-next resolution is at https://lkml.kernel.org/r/20230413145515.3534108-1-broonie@kernel.org fs/nfs/file.c: https://lkml.kernel.org/r/20230413145031.3526017-1-broonie@kernel.org include/linux/pagemap.h: https://lkml.kernel.org/r/20230413145239.3529907-1-broonie@kernel.org include/linux/slab.h: the SLOB changes just go away https://lkml.kernel.org/r/20230317124408.4f868a50@canb.auug.org.au mm/mmap.c: This is new, as a result of the patch from Vlastimil which you just merged. I assume the resolution is to replace the new vma_pgoff = next->vm_pgoff; with vma_pgoff = next->vm_pgoff - pglen; mm/slob.c: simply remove slob.c Forthcoming merge issues, and their linux-next resolutions are: tip tree, mm/userfaultfd.c: https://lkml.kernel.org/r/20230322103331.2ba61f0f@canb.auug.org.au block tree, lib/iov_iter.c: https://lkml.kernel.org/r/20230323100204.0917cecf@canb.auug.org.au sh tree, tools/testing/selftests/mm/Makefile: https://lkml.kernel.org/r/20230413135815.3254620-1-broonie@kernel.org drm tree, drivers/gpu/drm/ttm/ttm_pool.c: https://lkml.kernel.org/r/20230411122432.1d2b3ccb@canb.auug.org.au drm-misc tree, drivers/gpu/drm/ttm/ttm_pool.c: https://lkml.kernel.org/r/20230414125913.851920-1-broonie@kernel.org Forthcoming build issues, and their linux-next resolutions are: block tree, lib/iov_iter.c: https://lkml.kernel.org/r/20230324125706.2c6d955d@canb.auug.org.au tip tree, mm/migrate.c: https://lkml.kernel.org/r/20230419182136.112974-1-broonie@kernel.org And there may be a runtime issue when mm-stable is combined with the ext4 tree. See https://lkml.kernel.org/r/20230419120923.3152939-1-willy@infradead.org And a Kconfig isuue with the riscv tree, described here: https://lkml.kernel.org/r/CAKXUXMyVeg2kQK_edKHtMD3eADrDK_PKhCSVkMrLDdYgTQQ5rg@mail.gmail.com Thanks. The following changes since commit ef832747a82dfbc22a3702219cc716f449b24e4a: nilfs2: initialize unused bytes in segment summary blocks (2023-04-18 14:22:14 -0700) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm tags/mm-stable-2023-04-27-15-30 for you to fetch changes up to 4d4b6d66db63ceed399f1fb1a4b24081d2590eb1: mm,unmap: avoid flushing TLB in batch if PTE is inaccessible (2023-04-27 13:42:16 -0700) ---------------------------------------------------------------- - Nick Piggin's "shoot lazy tlbs" series, to improve the peformance of switching from a user process to a kernel thread. - More folio conversions from Kefeng Wang, Zhang Peng and Pankaj Raghav. - zsmalloc performance improvements from Sergey Senozhatsky. - Yue Zhao has found and fixed some data race issues around the alteration of memcg userspace tunables. - VFS rationalizations from Christoph Hellwig: - removal of most of the callers of write_one_page(). - make __filemap_get_folio()'s return value more useful - Luis Chamberlain has changed tmpfs so it no longer requires swap backing. Use `mount -o noswap'. - Qi Zheng has made the slab shrinkers operate locklessly, providing some scalability benefits. - Keith Busch has improved dmapool's performance, making part of its operations O(1) rather than O(n). - Peter Xu adds the UFFD_FEATURE_WP_UNPOPULATED feature to userfaultd, permitting userspace to wr-protect anon memory unpopulated ptes. - Kirill Shutemov has changed MAX_ORDER's meaning to be inclusive rather than exclusive, and has fixed a bunch of errors which were caused by its unintuitive meaning. - Axel Rasmussen give userfaultfd the UFFDIO_CONTINUE_MODE_WP feature, which causes minor faults to install a write-protected pte. - Vlastimil Babka has done some maintenance work on vma_merge(): cleanups to the kernel code and improvements to our userspace test harness. - Cleanups to do_fault_around() by Lorenzo Stoakes. - Mike Rapoport has moved a lot of initialization code out of various mm/ files and into mm/mm_init.c. - Lorenzo Stoakes removd vmf_insert_mixed_prot(), which was added for DRM, but DRM doesn't use it any more. - Lorenzo has also coverted read_kcore() and vread() to use iterators and has thereby removed the use of bounce buffers in some cases. - Lorenzo has also contributed further cleanups of vma_merge(). - Chaitanya Prakash provides some fixes to the mmap selftesting code. - Matthew Wilcox changes xfs and afs so they no longer take sleeping locks in ->map_page(), a step towards RCUification of pagefaults. - Suren Baghdasaryan has improved mmap_lock scalability by switching to per-VMA locking. - Frederic Weisbecker has reworked the percpu cache draining so that it no longer causes latency glitches on cpu isolated workloads. - Mike Rapoport cleans up and corrects the ARCH_FORCE_MAX_ORDER Kconfig logic. - Liu Shixin has changed zswap's initialization so we no longer waste a chunk of memory if zswap is not being used. - Yosry Ahmed has improved the performance of memcg statistics flushing. - David Stevens has fixed several issues involving khugepaged, userfaultfd and shmem. - Christoph Hellwig has provided some cleanup work to zram's IO-related code paths. - David Hildenbrand has fixed up some issues in the selftest code's testing of our pte state changing. - Pankaj Raghav has made page_endio() unneeded and has removed it. - Peter Xu contributed some rationalizations of the userfaultfd selftests. - Yosry Ahmed has fixed an issue around memcg's page recalim accounting. - Chaitanya Prakash has fixed some arm-related issues in the selftests/mm code. - Longlong Xia has improved the way in which KSM handles hwpoisoned pages. - Peter Xu fixes a few issues with uffd-wp at fork() time. - Stefan Roesch has changed KSM so that it may now be used on a per-process and per-cgroup basis. ---------------------------------------------------------------- Alexander Halbuer (1): mm: reduce lock contention of pcp buffer refill Alexander Potapenko (8): x86: kmsan: don't rename memintrinsics in uninstrumented files kmsan: another take at fixing memcpy tests x86: kmsan: use C versions of memset16/memset32/memset64 kmsan: add memsetXX tests lib/stackdepot: kmsan: mark API outputs as initialized kmsan: add test_stackdepot_roundtrip mm: kmsan: apply __must_check to non-void functions mm: apply __must_check to vmap_pages_range_noflush() Andrew Morton (2): sync mm-stable with mm-hotfixes-stable to pick up depended-upon upstream changes sync mm-stable with mm-hotfixes-stable to pick up depended-upon upstream changes Andrey Konovalov (4): kasan: drop empty tagging-related defines kasan, arm64: rename tagging-related routines kasan, arm64: add arch_suppress_tag_checks_start/stop kasan: suppress recursive reports for HW_TAGS Aneesh Kumar K.V (2): mm/vmemmap/devdax: fix kernel crash when probing devdax devices mm/hugetlb_vmemmap: rename ARCH_WANT_HUGETLB_PAGE_OPTIMIZE_VMEMMAP Anshuman Khandual (2): mm/migrate: drop pte_mkhuge() in remove_migration_pte() mm/debug_vm_pgtable: replace pte_mkhuge() with arch_make_huge_pte() Arnd Bergmann (2): mm: make arch_has_descending_max_zone_pfns() static kasan: remove hwasan-kernel-mem-intrinsic-prefix=1 for clang-14 Axel Rasmussen (4): mm: userfaultfd: rename functions for clarity + consistency mm: userfaultfd: don't pass around both mm and vma mm: userfaultfd: combine 'mode' and 'wp_copy' arguments mm: userfaultfd: add UFFDIO_CONTINUE_MODE_WP to install WP PTEs Baolin Wang (2): mm: compaction: consider the number of scanning compound pages in isolate fail path mm: compaction: fix the possible deadlock when isolating hugetlb pages Chaitanya S Prakash (8): selftests/mm: change MAP_CHUNK_SIZE selftests/mm: change NR_CHUNKS_HIGH for aarch64 selftests/mm: set overcommit_policy as OVERCOMMIT_ALWAYS selftests/mm: add support for arm64 platform on va switch selftests/mm: rename va_128TBswitch to va_high_addr_switch selftests/mm: add platform independent in code comments selftests/mm: configure nr_hugepages for arm64 selftests/mm: run hugetlb testcases of va switch Christian Brauner (1): shmem: restrict noswap option to initial user namespace Christoph Hellwig (26): ufs: don't flush page immediately for DIRSYNC directories ocfs2: don't use write_one_page in ocfs2_duplicate_clusters_by_page mm,jfs: move write_one_page/folio_write_one to jfs mm: don't look at xarray value entries in split_huge_pages_in_file mm: make mapping_get_entry available outside of filemap.c mm: use filemap_get_entry in filemap_get_incore_folio shmem: open code the page cache lookup in shmem_get_folio_gfp mm: remove FGP_ENTRY mm: return an ERR_PTR from __filemap_get_folio zram: always compile read_from_bdev_sync zram: remove valid_io_request zram: make zram_bio_discard more self-contained zram: simplify bvec iteration in __zram_make_request zram: move discard handling to zram_submit_bio zram: return early on error in zram_bvec_rw zram: refactor highlevel read and write handling zram: don't use highmem for the bounce buffer in zram_bvec_{read,write} zram: rename __zram_bvec_read to zram_read_page zram: directly call zram_read_page in writeback_store zram: refactor zram_bdev_read zram: don't pass a bvec to __zram_bvec_write zram: refactor zram_bdev_write zram: pass a page to read_from_bdev zram: don't return errors from read_from_bdev_async zram: fix synchronous reads zram: return errors from read_from_bdev_sync Danilo Krummrich (1): maple_tree: export symbol mas_preallocate() David Hildenbrand (9): m68k/mm: use correct bit number in _PAGE_SWP_EXCLUSIVE comment mm/userfaultfd: don't consider uffd-wp bit of writable migration entries selftests/mm: reuse read_pmd_pagesize() in COW selftest selftests/mm: mkdirty: test behavior of (pte|pmd)_mkdirty on VMAs without write permissions sparc/mm: don't unconditionally set HW writable bit when setting PTE dirty on 64bit mm/migrate: revert "mm/migrate: fix wrongly apply write bit after mkdirty on sparc64" mm/huge_memory: revert "Partly revert "mm/thp: carry over dirty bit when thp splits on pmd"" mm/huge_memory: conditionally call maybe_mkwrite() and drop pte_wrprotect() in __split_huge_pmd_locked() mm: don't check VMA write permissions if the PTE/PMD indicates write permissions David Stevens (4): mm/khugepaged: drain lru after swapping in shmem mm/khugepaged: refactor collapse_file control flow mm/khugepaged: skip shmem with userfaultfd mm/khugepaged: maintain page cache uptodate flag Florian Schmidt (1): memcg v1: provide read access to memory.pressure_level Frederic Weisbecker (1): sched/isolation: add cpu_is_isolated() API Gerald Schaefer (1): mm: add PTE pointer parameter to flush_tlb_fix_spurious_fault() Haifeng Xu (1): mm/vmscan: simplify shrink_node() Hao Ge (1): kmemleak-test: fix kmemleak_test.c build logic Heiko Carstens (1): s390/mm: try VMA lock-based page fault handling first Huang Ying (2): migrate_pages_batch: fix statistics for longterm pin retry mm,unmap: avoid flushing TLB in batch if PTE is inaccessible Hugh Dickins (3): shmem: shmem_get_partial_folio use filemap_get_entry hugetlb: pte_alloc_huge() to replace huge pte_alloc_map() mm/khugepaged: fix conflicting mods to collapse_file() Hyeonggon Yoo (3): mmflags.h: use less error prone method to define pageflag_names mm, printk: introduce new format %pGt for page_type mm/debug: use %pGt to display page_type in dump_page() Ivan Orlov (2): selftests: cgroup: add 'malloc' failures checks in test_memcontrol mm: khugepaged: fix kernel BUG in hpage_collapse_scan_file() Jaewon Kim (1): dma-buf: system_heap: avoid reclaim for order 4 Jeff Xu (1): selftests/memfd: fix test_sysctl Jiaqi Yan (3): mm/khugepaged: recover from poisoned anonymous memory mm/hwpoison: introduce copy_mc_highpage mm/khugepaged: recover from poisoned file-backed memory Jingyu Wang (1): mm/gup.c: fix typo in comments John Keeping (1): mm: shrinkers: fix debugfs file permissions Josh Triplett (1): prctl: add PR_GET_AUXV to copy auxv to userspace Kalesh Singh (1): mm: Multi-gen LRU: remove wait_event_killable() Kefeng Wang (9): mm: huge_memory: convert __do_huge_pmd_anonymous_page() to use a folio mm: memory: use folio_throttle_swaprate() in do_swap_page() mm: memory: use folio_throttle_swaprate() in page_copy_prealloc() mm: memory: use folio_throttle_swaprate() in wp_page_copy() mm: memory: use folio_throttle_swaprate() in do_anonymous_page() mm: memory: use folio_throttle_swaprate() in do_cow_fault() mm: swap: remove unneeded cgroup_throttle_swaprate() mm: memory-failure: directly use IS_ENABLED(CONFIG_HWPOISON_INJECT) mm: correct arg in reclaim_pages()/reclaim_clean_pages_from_list() Keith Busch (8): dmapool: add alloc/free performance test dmapool: move debug code to own functions dmapool: rearrange page alloc failure handling dmapool: consolidate page initialization dmapool: simplify freeing dmapool: don't memset on free twice dmapool: link blocks across pages dmapool: create/destroy cleanup Kirill A. Shutemov (12): sparc/mm: fix MAX_ORDER usage in tsb_grow() um: fix MAX_ORDER usage in linux_main() floppy: fix MAX_ORDER usage drm/i915: fix MAX_ORDER usage in i915_gem_object_get_pages_internal() genwqe: fix MAX_ORDER usage perf/core: fix MAX_ORDER usage in rb_alloc_aux_page() mm/page_reporting: fix MAX_ORDER usage in page_reporting_register() mm/slub: fix MAX_ORDER usage in calculate_order() iommu: fix MAX_ORDER usage in __iommu_dma_alloc_pages() mm, treewide: redefine MAX_ORDER sanely mm/page_alloc: make deferred page init free pages in MAX_ORDER blocks mm: avoid passing 0 to __ffs() Kirill Tkhai (1): mm: vmscan: add shrinker_srcu_generation Laurent Dufour (1): powerc/mm: try VMA lock-based page fault handling first Li zeming (1): sparse: remove unnecessary 0 values from rc Linus Torvalds (1): mm: move 'mmap_min_addr' logic from callers into vm_unmapped_area() Liu Shixin (4): mm/zswap: remove zswap_entry_cache_{create,destroy} helper function mm/zswap: replace zswap_init_{started/failed} with zswap_init_state mm/zswap: delay the initialization of zswap mm: hwpoison: support recovery from HugePage copy-on-write faults Longlong Xia (2): mm: memory-failure: refactor add_to_kill() mm: ksm: support hwpoison for ksm page Lorenzo Stoakes (15): mm: prefer xxx_page() alloc/free functions for order-0 pages mm: refactor do_fault_around() mm: prefer fault_around_pages to fault_around_bytes MAINTAINERS: add Lorenzo as vmalloc reviewer mm: remove unused vmf_insert_mixed_prot() mm: remove vmf_insert_pfn_xxx_prot() for huge page-table entries drm/ttm: remove comment referencing now-removed vmf_insert_mixed_prot() fs/proc/kcore: avoid bounce buffer for ktext data fs/proc/kcore: convert read_kcore() to read_kcore_iter() iov_iter: add copy_page_to_iter_nofault() mm: vmalloc: convert vread() to vread_iter() mm/mmap/vma_merge: further improve prev/next VMA naming mm/mmap/vma_merge: fold curr, next assignment logic mm/mmap/vma_merge: explicitly assign res, vma, extend invariants mm/mmap/vma_merge: init cleanup, be explicit about the non-mergeable case Luca Vizzarro (1): memfd: pass argument of memfd_fcntl as int Luis Chamberlain (6): shmem: remove check for folio lock on writepage() shmem: set shmem_writepage() variables early shmem: move reclaim check early on writepages() shmem: skip page split if we're not reclaiming shmem: update documentation shmem: add support to ignore swap Ma Wupeng (1): x86/mm/pat: clear VM_PAT if copy_p4d_range failed Matthew Wilcox (Oracle) (4): xfs: remove xfs_filemap_map_pages() wrapper afs: split afs_pagecache_valid() out of afs_validate() mm: hold the RCU read lock over calls to ->map_pages hugetlb: remove PageHeadHuge() Mel Gorman (1): sched/numa: apply the scan delay to every new vma Michal Hocko (1): memcg: do not drain charge pcp caches on remote isolated cpus Michel Lespinasse (1): mm: rcu safe VMA freeing Mike Rapoport (IBM) (32): loongarch: drop ranges for definition of ARCH_FORCE_MAX_ORDER mips: drop ranges for definition of ARCH_FORCE_MAX_ORDER mm: move get_page_from_free_area() to mm/page_alloc.c mips: fix comment about pgtable_init() mm/page_alloc: add helper for checking if check_pages_enabled mm: move most of core MM initialization to mm/mm_init.c mm: handle hashdist initialization in mm/mm_init.c mm/page_alloc: rename page_alloc_init() to page_alloc_init_cpuhp() init: fold build_all_zonelists() and page_alloc_init_cpuhp() to mm_init() init,mm: move mm_init() to mm/mm_init.c and rename it to mm_core_init() mm: call {ptlock,pgtable}_cache_init() directly from mm_core_init() mm: move init_mem_debugging_and_hardening() to mm/mm_init.c init,mm: fold late call to page_ext_init() to page_alloc_init_late() mm: move mem_init_print_info() to mm_init.c mm: move kmem_cache_init() declaration to mm/slab.h mm: move vmalloc_init() declaration to mm/internal.h MAINTAINERS: extend memblock entry to include MM initialization arm: reword ARCH_FORCE_MAX_ORDER prompt and help text arm64: drop ranges in definition of ARCH_FORCE_MAX_ORDER arm64: reword ARCH_FORCE_MAX_ORDER prompt and help text csky: drop ARCH_FORCE_MAX_ORDER ia64: don't allow users to override ARCH_FORCE_MAX_ORDER m68k: reword ARCH_FORCE_MAX_ORDER prompt and help text nios2: reword ARCH_FORCE_MAX_ORDER prompt and help text nios2: drop ranges for definition of ARCH_FORCE_MAX_ORDER powerpc: reword ARCH_FORCE_MAX_ORDER prompt and help text powerpc: drop ranges for definition of ARCH_FORCE_MAX_ORDER sh: reword ARCH_FORCE_MAX_ORDER prompt and help text sh: drop ranges for definition of ARCH_FORCE_MAX_ORDER sparc: reword ARCH_FORCE_MAX_ORDER prompt and help text xtensa: reword ARCH_FORCE_MAX_ORDER prompt and help text mm: move free_area_empty() to mm/internal.h Muchun Song (1): mm: hugetlb_vmemmap: simplify hugetlb_vmemmap_init() a bit Muhammad Usama Anjum (1): mm/userfaultfd: support WP on multiple VMAs Nicholas Piggin (5): kthread: simplify kthread_use_mm refcounting lazy tlb: introduce lazy tlb mm refcount helper functions lazy tlb: allow lazy tlb mm refcounting to be configurable lazy tlb: shoot lazies, non-refcounting lazy tlb mm reference handling scheme powerpc/64s: enable MMU_LAZY_TLB_SHOOTDOWN Pankaj Raghav (7): orangefs: use folios in orangefs_readahead mpage: split submit_bio and bio end_io handler for reads and writes mpage: use folios in bio end_io handler fs/buffer: add folio_set_bh helper buffer: add folio_alloc_buffers() helper fs/buffer: add folio_create_empty_buffers helper fs/buffer: convert create_page_buffers to folio_create_buffers Pavankumar Kondeti (1): printk: export console trace point for kcsan/kasan/kfence/kmsan Peng Zhang (5): mm: kfence: improve the performance of __kfence_alloc() and __kfence_free() maple_tree: simplify mas_wr_node_walk() maple_tree: use correct variable type in sizeof maple_tree: add a test case to check maple_alloc maple_tree: fix allocation in mas_sparse_area() Peter Collingbourne (2): kasan: call clear_page with a match-all tag instead of changing page tag kasan: remove PG_skip_kasan_poison flag Peter Xu (41): mm/khugepaged: alloc_charge_hpage() take care of mem charge errors mm/khugepaged: cleanup memcg uncharge for failure path mm/thp: rename TRANSPARENT_HUGEPAGE_NEVER_DAX to _UNSUPPORTED mm/uffd: UFFD_FEATURE_WP_UNPOPULATED selftests/mm: smoke test UFFD_FEATURE_WP_UNPOPULATED selftests/mm: update .gitignore with two missing tests selftests/mm: dump a summary in run_vmtests.sh selftests/mm: merge util.h into vm_util.h selftests/mm: use TEST_GEN_PROGS where proper selftests/mm: link vm_util.c always selftests/mm: merge default_huge_page_size() into one selftests/mm: use PM_* macros in vm_utils.h selftests/mm: reuse pagemap_get_entry() in vm_util.h selftests/mm: test UFFDIO_ZEROPAGE only when !hugetlb selftests/mm: drop test_uffdio_zeropage_eexist selftests/mm: create uffd-common.[ch] selftests/mm: split uffd tests into uffd-stress and uffd-unit-tests selftests/mm: uffd_[un]register() selftests/mm: uffd_open_{dev|sys}() selftests/mm: UFFDIO_API test selftests/mm: drop global mem_fd in uffd tests selftests/mm: drop global hpage_size in uffd tests selftests/mm: rename uffd_stats to uffd_args selftests/mm: let uffd_handle_page_fault() take wp parameter selftests/mm: allow allocate_area() to fail properly selftests/mm: add framework for uffd-unit-test selftests/mm: move uffd pagemap test to unit test selftests/mm: move uffd minor test to unit test selftests/mm: move uffd sig/events tests into uffd unit tests selftests/mm: move zeropage test into uffd unit tests selftests/mm: workaround no way to detect uffd-minor + wp selftests/mm: allow uffd test to skip properly with no privilege selftests/mm: drop sys/dev test in uffd-stress test selftests/mm: add shmem-private test to uffd-stress selftests/mm: add uffdio register ioctls test mm/hugetlb: fix uffd-wp during fork() mm/hugetlb: fix uffd-wp bit lost when unsharing happens selftests/mm: add a few options for uffd-unit-test selftests/mm: extend and rename uffd pagemap test selftests/mm: rename COW_EXTRA_LIBS to IOURING_EXTRA_LIBS selftests/mm: add tests for RO pinning vs fork() Qi Zheng (8): mm: vmscan: add a map_nr_max field to shrinker_info mm: vmscan: make global slab shrink lockless mm: vmscan: make memcg slab shrink lockless mm: shrinkers: make count and scan in shrinker debugfs lockless mm: vmscan: hold write lock to reparent shrinker nr_deferred mm: vmscan: remove shrinker_rwsem from synchronize_shrinkers() mm: shrinkers: convert shrinker_rwsem to mutex mm: mlock: use folios_put() in mlock_folio_batch() Raghavendra K T (3): sched/numa: enhance vma scanning logic sched/numa: implement access PID reset logic sched/numa: use hash_32 to mix up PIDs accessing VMA Sebastian Andrzej Siewior (1): io-mapping: don't disable preempt on RT in io_mapping_map_atomic_wc(). Sergey Senozhatsky (6): zsmalloc: remove insert_zspage() ->inuse optimization zsmalloc: fine-grained inuse ratio based fullness grouping zsmalloc: rework compaction algorithm zsmalloc: show per fullness group class stats zsmalloc: reset compaction source zspage pointer after putback_zspage() zsmalloc: allow only one active pool compaction context Stefan Roesch (4): mm: add tracepoints to ksm mm: add new api to enable ksm per process mm: add new KSM process and sysfs knobs selftests/mm: add new selftests for KSM Steven Price (1): smaps: fix defined but not used smaps_shmem_walk_ops Suren Baghdasaryan (24): mm: introduce CONFIG_PER_VMA_LOCK mm: move mmap_lock assert function definitions mm: add per-VMA lock and helper functions to control it mm: mark VMA as being written when changing vm_flags mm/mmap: move vma_prepare before vma_adjust_trans_huge mm/khugepaged: write-lock VMA while collapsing a huge page mm/mmap: write-lock VMAs in vma_prepare before modifying them mm/mremap: write-lock VMA while remapping it to a new address range mm: write-lock VMAs before removing them from VMA tree mm: conditionally write-lock VMA in free_pgtables kernel/fork: assert no VMA readers during its destruction mm/mmap: prevent pagefault handler from racing with mmu_notifier registration mm: introduce vma detached flag mm: introduce lock_vma_under_rcu to be used from arch-specific code mm: fall back to mmap_lock if vma->anon_vma is not yet set mm: add FAULT_FLAG_VMA_LOCK flag mm: prevent do_swap_page from handling page faults under VMA lock mm: prevent userfaults to be handled under per-vma lock mm: introduce per-VMA lock statistics x86/mm: try VMA lock-based page fault handling first arm64/mm: try VMA lock-based page fault handling first mm/mmap: free vm_area_struct without call_rcu in exit_mmap mm: separate vma->lock from vm_area_struct mm: do not increment pgfault stats when page fault handler retries T.J. Alumbaugh (2): mm: multi-gen LRU: clean up sysfs code mm: multi-gen LRU: improve design doc Taejoon Song (1): mm/zswap: try to avoid worst-case scenario on same element pages Thomas Weißschuh (2): mm: cma: make kobj_type structure constant mm/damon/sysfs: make more kobj_type structures constant Tom Rix (1): mm: backing-dev: set variables dev_attr_min,max_bytes storage-class-specifier to static Tomas Krcka (1): mm: be less noisy during memory hotplug Tomas Mudrunka (1): mm/memtest: add results of early memtest to /proc/meminfo Tony Battersby (4): dmapool: remove checks for dev == NULL dmapool: use sysfs_emit() instead of scnprintf() dmapool: cleanup integer types dmapool: speedup DMAPOOL_DEBUG with init_on_alloc Uladzislau Rezki (Sony) (3): mm: vmalloc: remove a global vmap_blocks xarray lib/test_vmalloc.c: add vm_map_ram()/vm_unmap_ram() test case mm: vmalloc: rename addr_to_vb_xarray() function Uros Bizjak (1): mm/rmap: use atomic_try_cmpxchg in set_tlb_ubc_flush_pending Vincenzo Frascino (1): arm64: mte: rename TCO routines Vlastimil Babka (12): mm, page_alloc: reduce page alloc/free sanity checks mm/mmap/vma_merge: use only primary pointers for preparing merge mm/mmap/vma_merge: use the proper vma pointer in case 3 mm/mmap/vma_merge: use the proper vma pointers in cases 1 and 6 mm/mmap/vma_merge: use the proper vma pointer in case 4 mm/mmap/vma_merge: initialize mid and next in natural order mm/mmap/vma_merge: set mid to NULL if not applicable mm/mmap/vma_merge: rename adj_next to adj_start mm/mmap/vma_merge: convert mergeability checks to return bool mm/mmap: start distinguishing if vma can be removed in mergeability test mm/mremap: simplify vma expansion again mm, page_alloc: use check_pages_enabled static key to check tail pages Wenchao Hao (1): trace: cma: remove unnecessary event class cma_alloc_class Yajun Deng (1): lib/show_mem.c: use for_each_populated_zone() simplify code Yang Yang (1): mm: workingset: update description of the source file Yosry Ahmed (12): cgroup: rename cgroup_rstat_flush_"irqsafe" to "atomic" memcg: rename mem_cgroup_flush_stats_"delayed" to "ratelimited" memcg: do not flush stats in irq context memcg: replace stats_flush_lock with an atomic memcg: sleep during flushing stats in safe contexts workingset: memcg: sleep when flushing stats in workingset_refault() vmscan: memcg: sleep when flushing stats during reclaim memcg: do not modify rstat tree for zero updates memcg: page_cgroup_ino() get memcg from the page's folio mm: vmscan: ignore non-LRU-based reclaim in memcg reclaim mm: vmscan: move set_task_reclaim_state() near flush_reclaim_state() mm: vmscan: refactor updating current->reclaim_state Yue Zhao (4): mm, memcg: Prevent memory.oom.group load/store tearing mm, memcg: Prevent memory.swappiness load/store tearing mm, memcg: Prevent memory.oom_control load/store tearing mm, memcg: Prevent memory.soft_limit_in_bytes load/store tearing ZhangPeng (8): mm/madvise: use vma_lookup() instead of find_vma() userfaultfd: convert mfill_atomic_pte_copy() to use a folio userfaultfd: use kmap_local_page() in copy_huge_page_from_user() userfaultfd: convert copy_huge_page_from_user() to copy_folio_from_user() userfaultfd: convert mfill_atomic_hugetlb() to use a folio mm: convert copy_user_huge_page() to copy_user_large_folio() userfaultfd: convert mfill_atomic() to use a folio userfaultfd: use helper function range_in_vma() Zhen Lei (1): kmsan: fix a stale comment in kmsan_save_stack_with_flags() Zi Yan (1): selftests/mm: fix split huge page tests Zqiang (1): kasan: fix lockdep report invalid wait context Documentation/ABI/testing/sysfs-kernel-mm-ksm | 8 + Documentation/admin-guide/kdump/vmcoreinfo.rst | 6 +- Documentation/admin-guide/kernel-parameters.txt | 2 +- Documentation/admin-guide/mm/ksm.rst | 5 +- Documentation/admin-guide/mm/userfaultfd.rst | 25 + Documentation/core-api/printk-formats.rst | 16 +- Documentation/filesystems/locking.rst | 4 +- Documentation/filesystems/proc.rst | 8 + Documentation/filesystems/tmpfs.rst | 66 +- Documentation/mm/active_mm.rst | 6 + Documentation/mm/arch_pgtable_helpers.rst | 2 +- Documentation/mm/multigen_lru.rst | 44 +- Documentation/mm/unevictable-lru.rst | 2 + MAINTAINERS | 5 +- arch/Kconfig | 32 + arch/arc/Kconfig | 4 +- arch/arc/mm/init.c | 5 - arch/arm/Kconfig | 27 +- arch/arm/configs/imx_v6_v7_defconfig | 2 +- arch/arm/configs/milbeaut_m10v_defconfig | 2 +- arch/arm/configs/oxnas_v6_defconfig | 2 +- arch/arm/configs/pxa_defconfig | 2 +- arch/arm/configs/sama7_defconfig | 2 +- arch/arm/configs/sp7021_defconfig | 2 +- arch/arm/mach-rpc/ecard.c | 2 +- arch/arm64/Kconfig | 52 +- arch/arm64/include/asm/memory.h | 8 +- arch/arm64/include/asm/mte-kasan.h | 81 + arch/arm64/include/asm/mte.h | 12 - arch/arm64/include/asm/pgtable.h | 2 +- arch/arm64/include/asm/sparsemem.h | 2 +- arch/arm64/include/asm/uaccess.h | 66 +- arch/arm64/include/asm/word-at-a-time.h | 4 +- arch/arm64/kvm/hyp/include/nvhe/gfp.h | 2 +- arch/arm64/kvm/hyp/nvhe/page_alloc.c | 10 +- arch/arm64/mm/fault.c | 36 + arch/csky/Kconfig | 4 - arch/ia64/Kconfig | 7 +- arch/ia64/include/asm/sparsemem.h | 4 +- arch/ia64/mm/hugetlbpage.c | 2 +- arch/loongarch/Kconfig | 14 +- arch/m68k/Kconfig.cpu | 19 +- arch/m68k/include/asm/mcf_pgtable.h | 2 +- arch/mips/Kconfig | 15 +- arch/mips/include/asm/fixmap.h | 2 +- arch/mips/include/asm/pgtable.h | 3 +- arch/nios2/Kconfig | 22 +- arch/powerpc/Kconfig | 38 +- arch/powerpc/configs/85xx/ge_imp3a_defconfig | 2 +- arch/powerpc/configs/fsl-emb-nonhw.config | 2 +- arch/powerpc/include/asm/book3s/64/tlbflush.h | 3 +- arch/powerpc/kernel/smp.c | 2 +- arch/powerpc/mm/book3s64/iommu_api.c | 2 +- arch/powerpc/mm/book3s64/radix_tlb.c | 4 +- arch/powerpc/mm/fault.c | 37 + arch/powerpc/mm/hugetlbpage.c | 2 +- arch/powerpc/platforms/powernv/Kconfig | 1 + arch/powerpc/platforms/powernv/pci-ioda.c | 2 +- arch/powerpc/platforms/pseries/Kconfig | 1 + arch/s390/Kconfig | 3 +- arch/s390/include/asm/pgtable.h | 12 +- arch/s390/mm/fault.c | 24 + arch/s390/mm/gmap.c | 7 + arch/s390/mm/hugetlbpage.c | 2 +- arch/s390/mm/mmap.c | 2 +- arch/sh/configs/ecovec24_defconfig | 2 +- arch/sh/mm/Kconfig | 30 +- arch/sparc/Kconfig | 21 +- arch/sparc/include/asm/pgtable_64.h | 116 +- arch/sparc/kernel/pci_sun4v.c | 2 +- arch/sparc/kernel/traps_64.c | 2 +- arch/sparc/mm/tsb.c | 4 +- arch/x86/Kconfig | 3 +- arch/x86/include/asm/pgtable.h | 2 +- arch/x86/include/asm/string_64.h | 23 +- arch/x86/mm/fault.c | 36 + arch/x86/mm/pat/memtype.c | 12 +- arch/xtensa/Kconfig | 23 +- drivers/base/regmap/regmap-debugfs.c | 8 +- drivers/block/floppy.c | 2 +- drivers/block/zram/zram_drv.c | 382 +-- drivers/block/zram/zram_drv.h | 1 - drivers/crypto/ccp/sev-dev.c | 2 +- drivers/crypto/hisilicon/sgl.c | 6 +- drivers/dma-buf/heaps/system_heap.c | 5 +- drivers/gpu/drm/i915/gem/selftests/huge_pages.c | 2 +- drivers/gpu/drm/ttm/ttm_bo_vm.c | 2 +- drivers/gpu/drm/ttm/ttm_pool.c | 22 +- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 2 +- drivers/iommu/dma-iommu.c | 4 +- drivers/irqchip/irq-gic-v3-its.c | 4 +- drivers/md/dm-bufio.c | 2 +- drivers/md/dm-cache-metadata.c | 2 +- drivers/md/dm-thin-metadata.c | 2 +- drivers/misc/genwqe/card_utils.c | 2 +- drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 2 +- drivers/net/ethernet/ibm/ibmvnic.h | 2 +- drivers/video/fbdev/hyperv_fb.c | 4 +- drivers/video/fbdev/vermilion/vermilion.c | 2 +- drivers/virtio/virtio_balloon.c | 2 +- drivers/virtio/virtio_mem.c | 12 +- fs/Kconfig | 9 +- fs/afs/dir.c | 10 +- fs/afs/dir_edit.c | 2 +- fs/afs/file.c | 14 +- fs/afs/inode.c | 27 +- fs/afs/internal.h | 1 + fs/afs/write.c | 4 +- fs/buffer.c | 89 +- fs/exec.c | 2 +- fs/ext4/inode.c | 2 +- fs/ext4/move_extent.c | 8 +- fs/hugetlbfs/inode.c | 4 +- fs/inode.c | 3 +- fs/iomap/buffered-io.c | 11 +- fs/jfs/jfs_metapage.c | 39 +- fs/mpage.c | 66 +- fs/netfs/buffered_read.c | 4 +- fs/nfs/file.c | 4 +- fs/nilfs2/page.c | 6 +- fs/ocfs2/refcounttree.c | 9 +- fs/orangefs/inode.c | 9 +- fs/proc/base.c | 3 + fs/proc/kcore.c | 85 +- fs/proc/meminfo.c | 13 + fs/proc/task_mmu.c | 3 +- fs/ramfs/file-nommu.c | 2 +- fs/super.c | 2 +- fs/ufs/dir.c | 29 +- fs/userfaultfd.c | 45 +- fs/xfs/xfs_buf.c | 3 +- fs/xfs/xfs_file.c | 17 +- include/asm-generic/pgalloc.h | 4 +- include/drm/ttm/ttm_pool.h | 2 +- include/linux/buffer_head.h | 6 + include/linux/cgroup.h | 2 +- include/linux/gfp.h | 7 +- include/linux/gfp_types.h | 30 +- include/linux/highmem.h | 62 +- include/linux/huge_mm.h | 41 +- include/linux/hugetlb.h | 46 +- include/linux/io-mapping.h | 20 +- include/linux/kmsan.h | 43 +- include/linux/ksm.h | 37 +- include/linux/memblock.h | 2 + include/linux/memcontrol.h | 10 +- include/linux/memfd.h | 4 +- include/linux/mm.h | 206 +- include/linux/mm_inline.h | 6 + include/linux/mm_types.h | 46 +- include/linux/mmap_lock.h | 37 +- include/linux/mmzone.h | 34 +- include/linux/page-flags.h | 23 +- include/linux/page_ext.h | 2 - include/linux/pageblock-flags.h | 4 +- include/linux/pagemap.h | 21 +- include/linux/pgtable.h | 9 +- include/linux/sched/coredump.h | 1 + include/linux/sched/isolation.h | 12 + include/linux/sched/mm.h | 28 + include/linux/shmem_fs.h | 19 +- include/linux/slab.h | 7 +- include/linux/swap.h | 38 +- include/linux/uio.h | 2 + include/linux/userfaultfd_k.h | 92 +- include/linux/vm_event_item.h | 6 + include/linux/vmalloc.h | 7 +- include/linux/vmstat.h | 6 + include/trace/events/cma.h | 58 +- include/trace/events/huge_memory.h | 5 +- include/trace/events/ksm.h | 251 ++ include/trace/events/mmflags.h | 94 +- include/uapi/linux/prctl.h | 4 + include/uapi/linux/userfaultfd.h | 17 +- init/main.c | 74 +- kernel/cgroup/rstat.c | 4 +- kernel/cpu.c | 2 +- kernel/crash_core.c | 2 +- kernel/dma/pool.c | 6 +- kernel/events/ring_buffer.c | 2 +- kernel/exit.c | 2 +- kernel/fork.c | 163 +- kernel/kcsan/kcsan_test.c | 20 +- kernel/kthread.c | 22 +- kernel/printk/printk.c | 2 + kernel/sched/core.c | 15 +- kernel/sched/fair.c | 57 + kernel/sys.c | 42 + lib/Kconfig.debug | 10 + lib/iov_iter.c | 48 + lib/maple_tree.c | 78 +- lib/show_mem.c | 19 +- lib/stackdepot.c | 12 + lib/test_printf.c | 26 + lib/test_vmalloc.c | 37 + lib/vsprintf.c | 21 + mm/Kconfig | 37 +- mm/Kconfig.debug | 14 +- mm/Makefile | 1 + mm/backing-dev.c | 4 +- mm/cma.c | 1 + mm/cma_sysfs.c | 2 +- mm/compaction.c | 20 +- mm/damon/sysfs-schemes.c | 4 +- mm/debug.c | 7 + mm/debug_vm_pgtable.c | 10 +- mm/dmapool_test.c | 147 + mm/filemap.c | 27 +- mm/folio-compat.c | 4 +- mm/gup.c | 2 +- mm/huge_memory.c | 85 +- mm/hugetlb.c | 136 +- mm/hugetlb_vmemmap.c | 18 +- mm/init-mm.c | 3 + mm/internal.h | 73 +- mm/kasan/hw_tags.c | 14 +- mm/kasan/kasan.h | 38 +- mm/kasan/kasan_test.c | 24 +- mm/kasan/quarantine.c | 34 +- mm/kasan/report.c | 59 +- mm/kfence/core.c | 70 +- mm/kfence/kfence.h | 10 +- mm/kfence/kfence_test.c | 22 +- mm/kfence/report.c | 2 +- mm/khugepaged.c | 437 ++- mm/kmsan/core.c | 2 +- mm/kmsan/init.c | 6 +- mm/kmsan/kmsan_test.c | 119 +- mm/ksm.c | 191 +- mm/madvise.c | 14 +- mm/memblock.c | 11 +- mm/memcontrol.c | 127 +- mm/memfd.c | 6 +- mm/memory-failure.c | 65 +- mm/memory.c | 427 ++- mm/memory_hotplug.c | 15 +- mm/memtest.c | 6 + mm/migrate.c | 11 +- mm/mincore.c | 2 +- mm/mlock.c | 2 +- mm/mm_init.c | 2550 ++++++++++++++++ mm/mmap.c | 292 +- mm/mmu_gather.c | 2 +- mm/mprotect.c | 53 +- mm/mremap.c | 23 +- mm/nommu.c | 10 +- mm/page-writeback.c | 40 - mm/page_alloc.c | 3160 ++------------------ mm/page_isolation.c | 12 +- mm/page_owner.c | 6 +- mm/page_reporting.c | 4 +- mm/pgtable-generic.c | 2 +- mm/rmap.c | 50 +- mm/shmem.c | 137 +- mm/shrinker_debug.c | 43 +- mm/shuffle.h | 2 +- mm/slab.c | 5 +- mm/slab.h | 1 + mm/slob.c | 6 +- mm/slub.c | 9 +- mm/sparse-vmemmap.c | 3 +- mm/sparse.c | 2 +- mm/swap_state.c | 19 +- mm/swapfile.c | 10 +- mm/truncate.c | 15 +- mm/userfaultfd.c | 287 +- mm/vmalloc.c | 310 +- mm/vmscan.c | 383 +-- mm/vmstat.c | 20 +- mm/workingset.c | 28 +- mm/zsmalloc.c | 370 +-- mm/zswap.c | 138 +- net/smc/smc_ib.c | 2 +- samples/Kconfig | 7 + samples/Makefile | 2 +- samples/kmemleak/Makefile | 2 +- scripts/Makefile.kasan | 2 + security/integrity/ima/ima_crypto.c | 2 +- tools/include/uapi/linux/prctl.h | 2 + tools/testing/memblock/linux/mmzone.h | 6 +- tools/testing/radix-tree/maple.c | 24 + tools/testing/selftests/cgroup/test_memcontrol.c | 15 + tools/testing/selftests/memfd/memfd_test.c | 14 +- tools/testing/selftests/mm/.gitignore | 5 +- tools/testing/selftests/mm/Makefile | 92 +- tools/testing/selftests/mm/check_config.sh | 4 +- tools/testing/selftests/mm/cow.c | 33 +- tools/testing/selftests/mm/gup_test.c | 5 +- tools/testing/selftests/mm/hugepage-mremap.c | 9 +- tools/testing/selftests/mm/hugetlb-madvise.c | 25 +- tools/testing/selftests/mm/khugepaged.c | 4 + tools/testing/selftests/mm/ksm_functional_tests.c | 97 +- tools/testing/selftests/mm/ksm_tests.c | 174 +- tools/testing/selftests/mm/mkdirty.c | 379 +++ tools/testing/selftests/mm/mrelease_test.c | 11 +- tools/testing/selftests/mm/run_vmtests.sh | 46 +- tools/testing/selftests/mm/soft-dirty.c | 3 + tools/testing/selftests/mm/split_huge_page_test.c | 10 +- tools/testing/selftests/mm/thuge-gen.c | 19 +- tools/testing/selftests/mm/transhuge-stress.c | 12 +- tools/testing/selftests/mm/uffd-common.c | 618 ++++ tools/testing/selftests/mm/uffd-common.h | 117 + tools/testing/selftests/mm/uffd-stress.c | 481 +++ tools/testing/selftests/mm/uffd-unit-tests.c | 1228 ++++++++ tools/testing/selftests/mm/userfaultfd.c | 1858 ------------ tools/testing/selftests/mm/util.h | 69 - .../mm/{va_128TBswitch.c => va_high_addr_switch.c} | 41 +- .../{va_128TBswitch.sh => va_high_addr_switch.sh} | 6 +- tools/testing/selftests/mm/virtual_address_range.c | 24 +- tools/testing/selftests/mm/vm_util.c | 180 +- tools/testing/selftests/mm/vm_util.h | 50 + 311 files changed, 11825 insertions(+), 8240 deletions(-) create mode 100644 include/trace/events/ksm.h create mode 100644 mm/dmapool_test.c create mode 100644 tools/testing/selftests/mm/mkdirty.c create mode 100644 tools/testing/selftests/mm/uffd-common.c create mode 100644 tools/testing/selftests/mm/uffd-common.h create mode 100644 tools/testing/selftests/mm/uffd-stress.c create mode 100644 tools/testing/selftests/mm/uffd-unit-tests.c delete mode 100644 tools/testing/selftests/mm/userfaultfd.c delete mode 100644 tools/testing/selftests/mm/util.h rename tools/testing/selftests/mm/{va_128TBswitch.c => va_high_addr_switch.c} (86%) rename tools/testing/selftests/mm/{va_128TBswitch.sh => va_high_addr_switch.sh} (89%)