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6bc56a4d85
Replace alloc_zeroed_user_highpage_movable(). The main difference is returning a folio containing a single page instead of returning the page, but take the opportunity to rename the function to match other allocation functions a little better and rewrite the documentation to place more emphasis on the zeroing rather than the highmem aspect. Link: https://lkml.kernel.org/r/20230116191813.2145215-2-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Based on arch/arm/include/asm/page.h
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*
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* Copyright (C) 1995-2003 Russell King
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* Copyright (C) 2012 ARM Ltd.
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*/
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#ifndef __ASM_PAGE_H
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#define __ASM_PAGE_H
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#include <asm/page-def.h>
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#ifndef __ASSEMBLY__
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#include <linux/personality.h> /* for READ_IMPLIES_EXEC */
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#include <linux/types.h> /* for gfp_t */
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#include <asm/pgtable-types.h>
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struct page;
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struct vm_area_struct;
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extern void copy_page(void *to, const void *from);
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extern void clear_page(void *to);
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void copy_user_highpage(struct page *to, struct page *from,
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unsigned long vaddr, struct vm_area_struct *vma);
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#define __HAVE_ARCH_COPY_USER_HIGHPAGE
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void copy_highpage(struct page *to, struct page *from);
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#define __HAVE_ARCH_COPY_HIGHPAGE
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struct folio *vma_alloc_zeroed_movable_folio(struct vm_area_struct *vma,
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unsigned long vaddr);
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#define vma_alloc_zeroed_movable_folio vma_alloc_zeroed_movable_folio
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void tag_clear_highpage(struct page *to);
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#define __HAVE_ARCH_TAG_CLEAR_HIGHPAGE
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#define clear_user_page(page, vaddr, pg) clear_page(page)
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#define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
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typedef struct page *pgtable_t;
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int pfn_is_map_memory(unsigned long pfn);
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#include <asm/memory.h>
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#endif /* !__ASSEMBLY__ */
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#define VM_DATA_DEFAULT_FLAGS (VM_DATA_FLAGS_TSK_EXEC | VM_MTE_ALLOWED)
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#include <asm-generic/getorder.h>
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#endif
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