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Date: Fri, 2 Oct 2020 14:22:04 +0200 From: Christoph Hellwig <hch@....de> To: Andrew Morton <akpm@...ux-foundation.org> Cc: Peter Zijlstra <peterz@...radead.org>, Boris Ostrovsky <boris.ostrovsky@...cle.com>, Juergen Gross <jgross@...e.com>, Stefano Stabellini <sstabellini@...nel.org>, Jani Nikula <jani.nikula@...ux.intel.com>, Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>, Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>, Chris Wilson <chris@...is-wilson.co.uk>, Matthew Auld <matthew.auld@...el.com>, Rodrigo Vivi <rodrigo.vivi@...el.com>, Minchan Kim <minchan@...nel.org>, Matthew Wilcox <willy@...radead.org>, Nitin Gupta <ngupta@...are.org>, x86@...nel.org, xen-devel@...ts.xenproject.org, linux-kernel@...r.kernel.org, intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org, linux-mm@...ck.org Subject: [PATCH 11/11] mm: remove alloc_vm_area All users are gone now. Signed-off-by: Christoph Hellwig <hch@....de> --- include/linux/vmalloc.h | 5 +---- mm/nommu.c | 7 ------ mm/vmalloc.c | 48 ----------------------------------------- 3 files changed, 1 insertion(+), 59 deletions(-) diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h index c77efeac242514..938eaf9517e266 100644 --- a/include/linux/vmalloc.h +++ b/include/linux/vmalloc.h @@ -169,6 +169,7 @@ extern struct vm_struct *__get_vm_area_caller(unsigned long size, unsigned long flags, unsigned long start, unsigned long end, const void *caller); +void free_vm_area(struct vm_struct *area); extern struct vm_struct *remove_vm_area(const void *addr); extern struct vm_struct *find_vm_area(const void *addr); @@ -204,10 +205,6 @@ static inline void set_vm_flush_reset_perms(void *addr) } #endif -/* Allocate/destroy a 'vmalloc' VM area. */ -extern struct vm_struct *alloc_vm_area(size_t size, pte_t **ptes); -extern void free_vm_area(struct vm_struct *area); - /* for /dev/kmem */ extern long vread(char *buf, char *addr, unsigned long count); extern long vwrite(char *buf, char *addr, unsigned long count); diff --git a/mm/nommu.c b/mm/nommu.c index 75a327149af127..9272f30e4c4726 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -354,13 +354,6 @@ void vm_unmap_aliases(void) } EXPORT_SYMBOL_GPL(vm_unmap_aliases); -struct vm_struct *alloc_vm_area(size_t size, pte_t **ptes) -{ - BUG(); - return NULL; -} -EXPORT_SYMBOL_GPL(alloc_vm_area); - void free_vm_area(struct vm_struct *area) { BUG(); diff --git a/mm/vmalloc.c b/mm/vmalloc.c index e2a2ded8d93478..3bc5b832451ef2 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -3083,54 +3083,6 @@ int remap_vmalloc_range(struct vm_area_struct *vma, void *addr, } EXPORT_SYMBOL(remap_vmalloc_range); -static int f(pte_t *pte, unsigned long addr, void *data) -{ - pte_t ***p = data; - - if (p) { - *(*p) = pte; - (*p)++; - } - return 0; -} - -/** - * alloc_vm_area - allocate a range of kernel address space - * @size: size of the area - * @ptes: returns the PTEs for the address space - * - * Returns: NULL on failure, vm_struct on success - * - * This function reserves a range of kernel address space, and - * allocates pagetables to map that range. No actual mappings - * are created. - * - * If @ptes is non-NULL, pointers to the PTEs (in init_mm) - * allocated for the VM area are returned. - */ -struct vm_struct *alloc_vm_area(size_t size, pte_t **ptes) -{ - struct vm_struct *area; - - area = get_vm_area_caller(size, VM_IOREMAP, - __builtin_return_address(0)); - if (area == NULL) - return NULL; - - /* - * This ensures that page tables are constructed for this region - * of kernel virtual address space and mapped into init_mm. - */ - if (apply_to_page_range(&init_mm, (unsigned long)area->addr, - size, f, ptes ? &ptes : NULL)) { - free_vm_area(area); - return NULL; - } - - return area; -} -EXPORT_SYMBOL_GPL(alloc_vm_area); - void free_vm_area(struct vm_struct *area) { struct vm_struct *ret; -- 2.28.0
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