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2023-02-02mm: mlock: use folios and a folio batch internallyLorenzo Stoakes
This brings mlock in line with the folio batches declared in mm/swap.c and makes the code more consistent across the two. The existing mechanism for identifying which operation each folio in the batch is undergoing is maintained, i.e. using the lower 2 bits of the struct folio address (previously struct page address). This should continue to function correctly as folios remain at least system word-aligned. All invocations of mlock() pass either a non-compound page or the head of a THP-compound page and no tail pages need updating so this functionality works with struct folios being used internally rather than struct pages. In this patch the external interface is kept identical to before in order to maintain separation between patches in the series, using a rather awkward conversion from struct page to struct folio in relevant functions. However, this maintenance of the existing interface is intended to be temporary - the next patch in the series will update the interfaces to accept folios directly. Link: https://lkml.kernel.org/r/9f894d54d568773f4ed3cb0eef5f8932f62c95f4.1673526881.git.lstoakes@gmail.com Signed-off-by: Lorenzo Stoakes <lstoakes@gmail.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Christian Brauner <brauner@kernel.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Hugh Dickins <hughd@google.com> Cc: Joel Fernandes (Google) <joel@joelfernandes.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Mike Rapoport (IBM) <rppt@kernel.org> Cc: William Kucharski <william.kucharski@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm: pagevec: add folio_batch_reinit()Lorenzo Stoakes
Patch series "update mlock to use folios", v4. This series updates mlock to use folios, converting the internal interface to using folios exclusively and exposing the folio interface externally. As a product of this we move to using a folio batch rather than a pagevec for mlock folios, which brings it in line with the core folio batches contained in mm/swap.c. This patch (of 5): This performs the same task as pagevec_reinit(), only modifying a folio batch rather than a pagevec. Link: https://lkml.kernel.org/r/cover.1673526881.git.lstoakes@gmail.com Link: https://lkml.kernel.org/r/9018cecacb39e34c883540f997f9be8281153613.1673526881.git.lstoakes@gmail.com Signed-off-by: Lorenzo Stoakes <lstoakes@gmail.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Christian Brauner <brauner@kernel.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Hugh Dickins <hughd@google.com> Cc: Joel Fernandes (Google) <joel@joelfernandes.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Mike Rapoport (IBM) <rppt@kernel.org> Cc: William Kucharski <william.kucharski@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm: madvise: use vm_normal_folio() in madvise_free_pte_range()Kefeng Wang
There is already a vm_normal_folio(), use it to make madvise_free_pte_range() only use a folio. Link: https://lkml.kernel.org/r/20230112124028.16964-1-wangkefeng.wang@huawei.com Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Vishal Moola (Oracle) <vishal.moola@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02shmem: convert shmem_write_end() to use a folioMatthew Wilcox (Oracle)
Use a folio internally to shmem_write_end() which saves a number of calls to compound_head() and lets us get rid of the custom code to zero out the rest of a THP and supports folios of arbitrary size. Link: https://lkml.kernel.org/r/20230112131031.1209553-1-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: William Kucharski <william.kucharski@oracle.com> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm/memory-failure: convert unpoison_memory() to foliosSidhartha Kumar
Use a folio inside unpoison_memory which replaces a compound_head() call with a call to page_folio(). Link: https://lkml.kernel.org/r/20230112204608.80136-9-sidhartha.kumar@oracle.com Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Miaohe Lin <linmiaohe@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm/memory-failure: convert hugetlb_set_page_hwpoison() to foliosSidhartha Kumar
Change hugetlb_set_page_hwpoison() to folio_set_hugetlb_hwpoison() and use a folio internally. Link: https://lkml.kernel.org/r/20230112204608.80136-8-sidhartha.kumar@oracle.com Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Miaohe Lin <linmiaohe@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm/memory-failure: convert __free_raw_hwp_pages() to foliosSidhartha Kumar
Change __free_raw_hwp_pages() to __folio_free_raw_hwp() and modify its callers to pass in a folio. Link: https://lkml.kernel.org/r/20230112204608.80136-7-sidhartha.kumar@oracle.com Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Miaohe Lin <linmiaohe@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm/memory-failure: convert raw_hwp_list_head() to foliosSidhartha Kumar
Change raw_hwp_list_head() to take in a folio and modify its callers to pass in a folio. Also converts two users of hugetlb specific page macro users to their folio equivalents. Link: https://lkml.kernel.org/r/20230112204608.80136-6-sidhartha.kumar@oracle.com Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Miaohe Lin <linmiaohe@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm/memory-failure: convert free_raw_hwp_pages() to foliosSidhartha Kumar
Change free_raw_hwp_pages() to folio_free_raw_hwp(), converts two users of hugetlb specific page macro users to their folio equivalents. Link: https://lkml.kernel.org/r/20230112204608.80136-5-sidhartha.kumar@oracle.com Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Miaohe Lin <linmiaohe@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm/memory-failure: convert hugetlb_clear_page_hwpoison to foliosSidhartha Kumar
Change hugetlb_clear_page_hwpoison() to folio_clear_hugetlb_hwpoison() by changing the function to take in a folio. This converts one use of ClearPageHWPoison and HPageRawHwpUnreliable to their folio equivalents. Link: https://lkml.kernel.org/r/20230112204608.80136-4-sidhartha.kumar@oracle.com Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Miaohe Lin <linmiaohe@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm/memory-failure: convert try_memory_failure_hugetlb() to foliosSidhartha Kumar
Use a struct folio rather than a head page in try_memory_failure_hugetlb. This converts one user of SetHPageMigratable to the folio equivalent. Link: https://lkml.kernel.org/r/20230112204608.80136-3-sidhartha.kumar@oracle.com Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Miaohe Lin <linmiaohe@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm/memory-failure: convert __get_huge_page_for_hwpoison() to foliosSidhartha Kumar
Patch series "convert hugepage memory failure functions to folios". This series contains a 1:1 straightforward page to folio conversion for memory failure functions which deal with huge pages. I renamed a few functions to fit with how other folio operating functions are named. These include: hugetlb_clear_page_hwpoison -> folio_clear_hugetlb_hwpoison free_raw_hwp_pages -> folio_free_raw_hwp __free_raw_hwp_pages -> __folio_free_raw_hwp hugetlb_set_page_hwpoison -> folio_set_hugetlb_hwpoison The goal of this series was to reduce users of the hugetlb specific page flag macros which take in a page so users are protected by the compiler to make sure they are operating on a head page. This patch (of 8): Use a folio throughout the function rather than using a head page. This also reduces the users of the page version of hugetlb specific page flags. Link: https://lkml.kernel.org/r/20230112204608.80136-2-sidhartha.kumar@oracle.com Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Miaohe Lin <linmiaohe@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02Revert "x86: kmsan: sync metadata pages on page fault"Alexander Potapenko
This reverts commit 3f1e2c7a9099c1ed32c67f12cdf432ba782cf51f. As noticed by Qun-Wei Lin, arch_sync_kernel_mappings() in arch/x86/mm/fault.c is only used with CONFIG_X86_32, whereas KMSAN is only supported on x86_64, where this code is not compiled. The patch in question dates back to downstream KMSAN branch based on v5.8-rc5, it sneaked into upstream unnoticed in v6.1. Link: https://lkml.kernel.org/r/20230111101806.3236991-1-glider@google.com Signed-off-by: Alexander Potapenko <glider@google.com> Reported-by: Qun-Wei Lin <qun-wei.lin@mediatek.com> Link: https://github.com/google/kmsan/issues/91 Cc: Andy Lutomirski <luto@kernel.org> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Marco Elver <elver@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm/mmap: fix comment of unmapped_area{_topdown}Vernon Yang
The low_limit of unmapped area information is inclusive, and the hight_limit is not, so make symbol to be [ instead of (. And replace hight_limit to high_limit. Link: https://lkml.kernel.org/r/20230111132036.801404-1-vernon2gm@gmail.com Fixes: 3499a13168da ("mm/mmap: use maple tree for unmapped_area{_topdown}") Signed-off-by: Vernon Yang <vernon2gm@gmail.com> Cc: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02maple_tree: fix comment of mte_destroy_walkVernon Yang
The parameter name of maple tree is mt, make the comment be mt instead of mn, and the separator between the parameter name and the description to be : instead of -. Link: https://lkml.kernel.org/r/20230111135348.803181-1-vernon2gm@gmail.com Fixes: 54a611b60590 ("Maple Tree: add new data structure") Signed-off-by: Vernon Yang <vernon2gm@gmail.com> Cc: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm: remove the hugetlb field from struct pageSidhartha Kumar
Patch series "Get rid of tail page fields". Continue the shrinkage of the struct page definition by getting rid of the 'first tail page' and 'second tail page' fields. I originally did this patch set before Hugh's rewrite of the subpages_mapcount, so it needed substantial updates; hope I didn't miss anything. This patch (of 28): commit dad6a5eb5556(mm,hugetlb: use folio fields in second tail page) added a transitional hugetlb field to struct page and struct folio to make room for another int in the first tail of a compound page. Hugetlb folio conversions have changed all page users of this field to use the fields within the folio so struct page no longer needs this hugetlb specific field. Link: https://lkml.kernel.org/r/20230111142915.1001531-1-willy@infradead.org Link: https://lkml.kernel.org/r/20230111142915.1001531-29-willy@infradead.org Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm: convert deferred_split_huge_page() to deferred_split_folio()Matthew Wilcox (Oracle)
Now that both callers use a folio, pass the folio in and save a call to compound_head(). Link: https://lkml.kernel.org/r/20230111142915.1001531-28-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm/huge_memory: convert get_deferred_split_queue() to take a folioMatthew Wilcox (Oracle)
Removes a few calls to compound_head(). Link: https://lkml.kernel.org/r/20230111142915.1001531-27-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm/huge_memory: remove page_deferred_list()Matthew Wilcox (Oracle)
Use folio->_deferred_list directly. Link: https://lkml.kernel.org/r/20230111142915.1001531-26-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm: move page->deferred_list to folio->_deferred_listMatthew Wilcox (Oracle)
Remove the entire block of definitions for the second tail page, and add the deferred list to the struct folio. This actually moves _deferred_list to a different offset in struct folio because I don't see a need to include the padding. This lets us use list_for_each_entry_safe() in deferred_split_scan() and avoid a number of calls to compound_head(). Link: https://lkml.kernel.org/r/20230111142915.1001531-25-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02doc: correct struct folio kernel-docMatthew Wilcox (Oracle)
Insert appropriate public: and private: markers to make the generated kernel-doc look right. Link: https://lkml.kernel.org/r/20230111142915.1001531-24-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm: remove 'First tail page' members from struct pageMatthew Wilcox (Oracle)
All former users now use the folio equivalents, so remove them from the definition of struct page. Link: https://lkml.kernel.org/r/20230111142915.1001531-23-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02hugetlb: remove uses of compound_dtor and compound_nrMatthew Wilcox (Oracle)
Convert the entire file to use the folio equivalents. Link: https://lkml.kernel.org/r/20230111142915.1001531-22-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm: convert destroy_large_folio() to use folio_dtorMatthew Wilcox (Oracle)
Replace a use of compound_dtor. Link: https://lkml.kernel.org/r/20230111142915.1001531-21-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm: convert is_transparent_hugepage() to use a folioMatthew Wilcox (Oracle)
Replace a use of page->compound_dtor with its folio equivalent. Link: https://lkml.kernel.org/r/20230111142915.1001531-20-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm: convert set_compound_page_dtor() and set_compound_order() to foliosMatthew Wilcox (Oracle)
Replace uses of compound_dtor, compound_order and compound_nr by their folio equivalents. Link: https://lkml.kernel.org/r/20230111142915.1001531-19-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm: reimplement compound_nr()Matthew Wilcox (Oracle)
Turn compound_nr() into a wrapper around folio_nr_pages(). Similarly to compound_order(), casting the struct page directly to struct folio preserves the existing behaviour, while calling page_folio() would change the behaviour. Move thp_nr_pages() down in the file so that compound_nr() can be after folio_nr_pages(). [willy@infradead.org: fix assertion triggering] Link: https://lkml.kernel.org/r/Y8AFgZEEjnUIaCbf@casper.infradead.org Link: https://lkml.kernel.org/r/20230111142915.1001531-18-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm: reimplement compound_order()Matthew Wilcox (Oracle)
Make compound_order() use struct folio. It can't be turned into a wrapper around folio_order() as a page can be turned into a tail page between a check in compound_order() and the assertion in folio_test_large(). Link: https://lkml.kernel.org/r/20230111142915.1001531-17-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm: remove head_compound_mapcount() and _ptr functionsMatthew Wilcox (Oracle)
folio_mapcount_ptr(), compound_mapcount_ptr() and subpages_mapcount_ptr() are all now unused. Link: https://lkml.kernel.org/r/20230111142915.1001531-16-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm: convert page_mapcount() to use folio_entire_mapcount()Matthew Wilcox (Oracle)
Remove a use of head_compound_mapcount(). Link: https://lkml.kernel.org/r/20230111142915.1001531-15-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02hugetlb: remove uses of folio_mapcount_ptrMatthew Wilcox (Oracle)
Use the entire_mapcount field directly. Link: https://lkml.kernel.org/r/20230111142915.1001531-14-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm/debug: remove call to head_compound_mapcount()Matthew Wilcox (Oracle)
Call folio_entire_mapcount() instead. Link: https://lkml.kernel.org/r/20230111142915.1001531-13-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm: use entire_mapcount in __page_dup_rmap()Matthew Wilcox (Oracle)
Remove the use of the compound_mapcount_ptr() wrapper, and add an assertion that we're not passing a tail page if we're duplicating a PMD. Link: https://lkml.kernel.org/r/20230111142915.1001531-12-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm: use a folio in hugepage_add_anon_rmap() and hugepage_add_new_anon_rmap()Matthew Wilcox (Oracle)
Remove uses of compound_mapcount_ptr() Link: https://lkml.kernel.org/r/20230111142915.1001531-11-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02page_alloc: use folio fields directlyMatthew Wilcox (Oracle)
Rmove the uses of compound_mapcount_ptr(), head_compound_mapcount() and subpages_mapcount_ptr() Link: https://lkml.kernel.org/r/20230111142915.1001531-10-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm: add folio_add_new_anon_rmap()Matthew Wilcox (Oracle)
In contrast to other rmap functions, page_add_new_anon_rmap() is always called with a freshly allocated page. That means it can't be called with a tail page. Turn page_add_new_anon_rmap() into folio_add_new_anon_rmap() and add a page_add_new_anon_rmap() wrapper. Callers can be converted individually. [akpm@linux-foundation.org: fix NOMMU build. page_add_new_anon_rmap() requires CONFIG_MMU] [willy@infradead.org: folio-compat.c needs rmap.h] Link: https://lkml.kernel.org/r/20230111142915.1001531-9-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm: convert page_add_file_rmap() to use a folio internallyMatthew Wilcox (Oracle)
The API for page_add_file_rmap() needs to be page-based, because we can add mappings of individual pages. But inside the function, we want to only call compound_head() once and then use the folio APIs instead of the page APIs that each call compound_head(). Link: https://lkml.kernel.org/r/20230111142915.1001531-8-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm: convert page_add_anon_rmap() to use a folio internallyMatthew Wilcox (Oracle)
The API for page_add_anon_rmap() needs to be page-based, because we can add mappings of individual pages. But inside the function, we want to only call compound_head() once and then use the folio APIs instead of the page APIs that each call compound_head(). Link: https://lkml.kernel.org/r/20230111142915.1001531-7-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm: convert page_remove_rmap() to use a folio internallyMatthew Wilcox (Oracle)
The API for page_remove_rmap() needs to be page-based, because we can remove mappings of pages individually. But inside the function, we want to only call compound_head() once and then use the folio APIs instead of the page APIs that each call compound_head(). Link: https://lkml.kernel.org/r/20230111142915.1001531-6-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm: convert total_compound_mapcount() to folio_total_mapcount()Matthew Wilcox (Oracle)
Instead of enforcing that the argument must be a head page by naming, enforce it with the compiler by making it a folio. Also rename the counter in struct folio from _compound_mapcount to _entire_mapcount. Link: https://lkml.kernel.org/r/20230111142915.1001531-5-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02doc: clarify refcount section by referring to folios & pagesMatthew Wilcox (Oracle)
Include the rename of subpages_mapcount to _nr_pages_mapped. Link: https://lkml.kernel.org/r/20230111142915.1001531-4-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm: convert head_subpages_mapcount() into folio_nr_pages_mapped()Matthew Wilcox (Oracle)
Calling this 'mapcount' is confusing since mapcount is usually the number of times something is mapped; instead this is the number of mapped pages. It's also better to enforce that this is a folio rather than a head page. Move folio_nr_pages_mapped() into mm/internal.h since this is not something we want device drivers or filesystems poking at. Get rid of folio_subpages_mapcount_ptr() and use folio->_nr_pages_mapped directly. Link: https://lkml.kernel.org/r/20230111142915.1001531-3-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm: remove folio_pincount_ptr() and head_compound_pincount()Matthew Wilcox (Oracle)
We can use folio->_pincount directly, since all users are guarded by tests of compound/large. Link: https://lkml.kernel.org/r/20230111142915.1001531-2-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: John Hubbard <jhubbard@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm/mmu_notifier: remove unused mmu_notifier_range_update_to_read_only exportAlistair Popple
mmu_notifier_range_update_to_read_only() was originally introduced in commit c6d23413f81b ("mm/mmu_notifier: mmu_notifier_range_update_to_read_only() helper") as an optimisation for device drivers that know a range has only been mapped read-only. However there are no users of this feature so remove it. As it is the only user of the struct mmu_notifier_range.vma field remove that also. Link: https://lkml.kernel.org/r/20230110025722.600912-1-apopple@nvidia.com Signed-off-by: Alistair Popple <apopple@nvidia.com> Acked-by: Mike Rapoport (IBM) <rppt@kernel.org> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com> Cc: Ira Weiny <ira.weiny@intel.com> Cc: Jerome Glisse <jglisse@redhat.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Ralph Campbell <rcampbell@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm: compaction: avoid fragmentation score calculation for empty zonesBaolin Wang
There is no need to calculate the fragmentation score for empty zones. Link: https://lkml.kernel.org/r/100331ad9d274a9725e687b00d85d75d7e4a17c7.1673342761.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm: compaction: add missing kcompactd wakeup trace eventBaolin Wang
Add missing kcompactd wakeup trace event for proactive compaction, meanwhile use order = -1 and the highest zone index of the pgdat for the kcompactd wakeup trace event by proactive compaction. Link: https://lkml.kernel.org/r/cbf8097a2d8a1b6800991f2a21575550d3613ce6.1673342761.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm: compaction: count the migration scanned pages events for proactive ↵Baolin Wang
compaction The proactive compaction will reuse per-node kcompactd threads, so we should also count the KCOMPACTD_MIGRATE_SCANNED and KCOMPACTD_FREE_SCANNED events for proactive compaction. Link: https://lkml.kernel.org/r/b7f1ece1adc17defa47e3667b5f9fd61f496517a.1673342761.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm: compaction: move list validation into compact_zone()Baolin Wang
Move the cc.freepages and cc.migratepages list validation into compact_zone() to remove some duplicate code. Link: https://lkml.kernel.org/r/15cf54f7d762e87b04ac3cc74536f7d1ebbcd8cd.1673342761.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm: compaction: remove redundant VM_BUG_ON() in compact_zone()Baolin Wang
Patch series "Some small improvements for compaction". When I did some compaction testing, I found some small room for improvement as well as some code cleanups. This patch (of 5): The compaction_suitable() will never return values other than COMPACT_SUCCESS, COMPACT_SKIPPED and COMPACT_CONTINUE, so after validation of COMPACT_SUCCESS and COMPACT_SKIPPED, we will never hit other unexpected case. Thus remove the redundant VM_BUG_ON() validation for the return values of compaction_suitable(). Link: https://lkml.kernel.org/r/cover.1673342761.git.baolin.wang@linux.alibaba.com Link: https://lkml.kernel.org/r/740a2396d9b98154dba76e326cba5e798b640ead.1673342761.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-02mm/mmap: fix typo in commentVernon Yang
Replace "parital" with "partial". Link: https://lkml.kernel.org/r/20230110145353.1658435-1-vernon2gm@gmail.com Signed-off-by: Vernon Yang <vernon2gm@gmail.com> Cc: Liam Howlett <liam.howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
generated by cgit (git 2.34.1) at 2025-09-11 23:31:59 +0000