Linus, please pull the latest slab changes from git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab.git tags/slab-for-5.17 ====================================== - Separate struct slab from struct page - an offshot of the page folio work. Struct page fields used by slab allocators are moved from struct page to a new struct slab, that uses the same physical storage. Similar to struct folio, it always is a head page. This brings better type safety, separation of large kmalloc allocations from true slabs, and cleanup of related objcg code. - A SLAB_MERGE_DEFAULT config optimization. ====================================== The struct slab series was originally based on v5.16-rc3 and in linux-next since beginning of December [1]. I decided to rebase to v5.16-rc6 after Stephen reported a conflict with mm made it to mainline [2]. If possible I would also like to finish the removal of slab fields from struct page within this merge window. It now depends on commits in the iommu tree that remove iommu's usage of the 'freelist' field. I currently have a branch for-5.17/struct-slab-part2 [3] that merges the iommu 'core' branch after the main struct slab series and adds a commit on top. I wonder if it's ok to send a pull request with that structure later (assuming after both this pull request and iommu tree are merged) or should it rather be rebased on your tree's commit that does the later merge of those two? Thanks, Vlastimil [1] https://lore.kernel.org/all/20211203073949.3d081406@xxxxxxxxxxxxxxxx/ [2] https://lore.kernel.org/all/3ec33e65-1080-96be-f8bb-0012e3b87387@xxxxxxx/ [3] https://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab.git/log/?h=for-5.17/struct-slab-part2 ---------------------------------------------------------------- Hyeonggon Yoo (2): mm: Make SLAB_MERGE_DEFAULT depend on SL[AU]B mm/slob: Remove unnecessary page_mapcount_reset() function call Matthew Wilcox (Oracle) (14): mm: Split slab into its own type mm: Convert [un]account_slab_page() to struct slab mm: Convert virt_to_cache() to use struct slab mm: Convert __ksize() to struct slab mm: Use struct slab in kmem_obj_info() mm: Convert check_heap_object() to use struct slab mm/slub: Convert detached_freelist to use a struct slab mm/slub: Convert kfree() to use a struct slab mm/slub: Convert print_page_info() to print_slab_info() mm/slub: Convert pfmemalloc_match() to take a struct slab mm/slob: Convert SLOB to use struct slab and struct folio mm/kasan: Convert to struct folio and struct slab zsmalloc: Stop using slab fields in struct page bootmem: Use page->index instead of page->freelist Vlastimil Babka (18): mm: add virt_to_folio() and folio_address() mm/slab: Dissolve slab_map_pages() in its caller mm/slub: Make object_err() static mm/slub: Convert __slab_lock() and __slab_unlock() to struct slab mm/slub: Convert alloc_slab_page() to return a struct slab mm/slub: Convert __free_slab() to use struct slab mm/slub: Convert most struct page to struct slab by spatch mm/slub: Finish struct page to struct slab conversion mm/slab: Convert kmem_getpages() and kmem_freepages() to struct slab mm/slab: Convert most struct page to struct slab by spatch mm/slab: Finish struct page to struct slab conversion mm: Convert struct page to struct slab in functions used by other subsystems mm/memcg: Convert slab objcgs from struct page to struct slab mm/kfence: Convert kfence_guarded_alloc() to struct slab mm/sl*b: Differentiate struct slab fields by sl*b implementations mm/slub: Simplify struct slab slabs field definition mm/slub: Define struct slab fields for CONFIG_SLUB_CPU_PARTIAL only when enabled Merge branch 'for-5.17/struct-slab' into for-linus arch/x86/mm/init_64.c | 2 +- include/linux/bootmem_info.h | 2 +- include/linux/kasan.h | 9 +- include/linux/memcontrol.h | 48 -- include/linux/mm.h | 12 + include/linux/mm_types.h | 10 +- include/linux/slab.h | 8 - include/linux/slab_def.h | 16 +- include/linux/slub_def.h | 29 +- init/Kconfig | 1 + mm/bootmem_info.c | 7 +- mm/kasan/common.c | 27 +- mm/kasan/generic.c | 8 +- mm/kasan/kasan.h | 1 + mm/kasan/quarantine.c | 2 +- mm/kasan/report.c | 13 +- mm/kasan/report_tags.c | 10 +- mm/kfence/core.c | 17 +- mm/kfence/kfence_test.c | 6 +- mm/memcontrol.c | 55 +- mm/slab.c | 456 ++++++++-------- mm/slab.h | 302 +++++++++-- mm/slab_common.c | 14 +- mm/slob.c | 62 +-- mm/slub.c | 1177 +++++++++++++++++++++--------------------- mm/sparse.c | 2 +- mm/usercopy.c | 13 +- mm/zsmalloc.c | 18 +- 28 files changed, 1265 insertions(+), 1062 deletions(-)
