Re: linux-next: build failures after merge of the mm tree
From: Matthew Wilcox
Date: Mon Jun 20 2022 - 10:36:48 EST
On Mon, Jun 20, 2022 at 03:11:31PM +0800, Muchun Song wrote:
> Thanks for your report. It is fixed in thread [1].
>
> https://lore.kernel.org/all/20220619133851.68184-3-songmuchun@xxxxxxxxxxxxx/ [1]
No, it's a different problem. I suggest dropping/reverting
https://lore.kernel.org/linux-mm/20220617175020.717127-20-willy@xxxxxxxxxxxxx/
> On Mon, Jun 20, 2022 at 2:42 PM Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
> >
> > Hi all,
> >
> > After merging the mm tree, today's linux-next build (x86_64 allnoconfig)
> > failed like this:
> >
> > In file included from arch/x86/include/asm/page.h:86,
> > from arch/x86/include/asm/thread_info.h:12,
> > from include/linux/thread_info.h:60,
> > from arch/x86/include/asm/preempt.h:7,
> > from include/linux/preempt.h:78,
> > from include/linux/spinlock.h:55,
> > from include/linux/mmzone.h:8,
> > from include/linux/gfp.h:6,
> > from include/linux/slab.h:15,
> > from include/linux/crypto.h:20,
> > from arch/x86/kernel/asm-offsets.c:9:
> > include/linux/mm.h: In function 'destroy_large_folio':
> > include/asm-generic/memory_model.h:35:21: error: implicit declaration of function 'page_to_section'; did you mean 'present_section'? [-Werror=implicit-function-declaration]
> > 35 | int __sec = page_to_section(__pg); \
> > | ^~~~~~~~~~~~~~~
> > include/asm-generic/memory_model.h:40:32: note: in definition of macro '__pfn_to_page'
> > 40 | ({ unsigned long __pfn = (pfn); \
> > | ^~~
> > include/asm-generic/memory_model.h:52:21: note: in expansion of macro '__page_to_pfn'
> > 52 | #define page_to_pfn __page_to_pfn
> > | ^~~~~~~~~~~~~
> > include/linux/mm.h:214:38: note: in expansion of macro 'page_to_pfn'
> > 214 | #define nth_page(page,n) pfn_to_page(page_to_pfn((page)) + (n))
> > | ^~~~~~~~~~~
> > include/linux/page-flags.h:312:33: note: in expansion of macro 'nth_page'
> > 312 | #define folio_page(folio, n) nth_page(&(folio)->page, n)
> > | ^~~~~~~~
> > include/linux/mm.h:928:38: note: in expansion of macro 'folio_page'
> > 928 | enum compound_dtor_id dtor = folio_page(folio, 1)->compound_dtor;
> > | ^~~~~~~~~~
> > In file included from include/linux/memcontrol.h:20,
> > from include/linux/swap.h:9,
> > from include/linux/suspend.h:5,
> > from arch/x86/kernel/asm-offsets.c:13:
> > include/linux/mm.h: At top level:
> > include/linux/mm.h:1556:29: error: conflicting types for 'page_to_section'; have 'long unsigned int(const struct page *)'
> > 1556 | static inline unsigned long page_to_section(const struct page *page)
> > | ^~~~~~~~~~~~~~~
> > In file included from arch/x86/include/asm/page.h:86,
> > from arch/x86/include/asm/thread_info.h:12,
> > from include/linux/thread_info.h:60,
> > from arch/x86/include/asm/preempt.h:7,
> > from include/linux/preempt.h:78,
> > from include/linux/spinlock.h:55,
> > from include/linux/mmzone.h:8,
> > from include/linux/gfp.h:6,
> > from include/linux/slab.h:15,
> > from include/linux/crypto.h:20,
> > from arch/x86/kernel/asm-offsets.c:9:
> > include/asm-generic/memory_model.h:35:21: note: previous implicit declaration of 'page_to_section' with type 'int()'
> > 35 | int __sec = page_to_section(__pg); \
> > | ^~~~~~~~~~~~~~~
> > include/asm-generic/memory_model.h:40:32: note: in definition of macro '__pfn_to_page'
> > 40 | ({ unsigned long __pfn = (pfn); \
> > | ^~~
> > include/asm-generic/memory_model.h:52:21: note: in expansion of macro '__page_to_pfn'
> > 52 | #define page_to_pfn __page_to_pfn
> > | ^~~~~~~~~~~~~
> > include/linux/mm.h:214:38: note: in expansion of macro 'page_to_pfn'
> > 214 | #define nth_page(page,n) pfn_to_page(page_to_pfn((page)) + (n))
> > | ^~~~~~~~~~~
> > include/linux/page-flags.h:312:33: note: in expansion of macro 'nth_page'
> > 312 | #define folio_page(folio, n) nth_page(&(folio)->page, n)
> > | ^~~~~~~~
> > include/linux/mm.h:928:38: note: in expansion of macro 'folio_page'
> > 928 | enum compound_dtor_id dtor = folio_page(folio, 1)->compound_dtor;
> > | ^~~~~~~~~~
> > cc1: some warnings being treated as errors
> >
> > Caused by commit (I think)
> >
> > d3b90b76e101 ("mm: convert destroy_compound_page() to destroy_large_folio()")
> >
> > I have reverted these commits fot today:
> >
> > 56629699b3dd mm/swap: convert __delete_from_swap_cache() to a folio
> > e5085f2cc241 mm/swap: convert delete_from_swap_cache() to take a folio
> > 169f02f4efb1 mm: convert page_swap_flags to folio_swap_flags
> > d3b90b76e101 mm: convert destroy_compound_page() to destroy_large_folio()
> >
> > Then I got:
> >
> > mm/hugetlb_vmemmap.c: In function 'vmemmap_optimizable_pages':
> > mm/hugetlb_vmemmap.c:110:24: error: implicit declaration of function 'sparse_decode_mem_map' [-Werror=implicit-function-declaration]
> > 110 | vmemmap_page = sparse_decode_mem_map(ms->section_mem_map,
> > | ^~~~~~~~~~~~~~~~~~~~~
> > mm/hugetlb_vmemmap.c:110:22: warning: assignment to 'struct page *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
> > 110 | vmemmap_page = _sparsedecode_mem_map(ms->section_mem_map,
> > | ^
> > cc1: some warnings being treated as errors
> >
> > from my arm64 defconfig build.
> >
> > Caused by commit
> >
> > 10a768735470 ("mm: memory_hotplug: make hugetlb_optimize_vmemmap compatible with memmap_on_memory")
> >
> > So I gave up and used the mm tree from next-20220617 for today.
> > --
> > Cheers,
> > Stephen Rothwell