madvise.c (e2a3b0df8dea7585a2e64861f3ab7bcbc2a04386) madvise.c (05ce77249d5068b057082d24ec22d3824f4816ac)
1/*
2 * linux/mm/madvise.c
3 *
4 * Copyright (C) 1999 Linus Torvalds
5 * Copyright (C) 2002 Christoph Hellwig
6 */
7
8#include <linux/mman.h>
9#include <linux/pagemap.h>
10#include <linux/syscalls.h>
11#include <linux/mempolicy.h>
12#include <linux/page-isolation.h>
1/*
2 * linux/mm/madvise.c
3 *
4 * Copyright (C) 1999 Linus Torvalds
5 * Copyright (C) 2002 Christoph Hellwig
6 */
7
8#include <linux/mman.h>
9#include <linux/pagemap.h>
10#include <linux/syscalls.h>
11#include <linux/mempolicy.h>
12#include <linux/page-isolation.h>
13#include <linux/userfaultfd_k.h>
13#include <linux/hugetlb.h>
14#include <linux/falloc.h>
15#include <linux/sched.h>
16#include <linux/ksm.h>
17#include <linux/fs.h>
18#include <linux/file.h>
19#include <linux/blkdev.h>
20#include <linux/backing-dev.h>

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472 struct vm_area_struct **prev,
473 unsigned long start, unsigned long end)
474{
475 *prev = vma;
476 if (vma->vm_flags & (VM_LOCKED|VM_HUGETLB|VM_PFNMAP))
477 return -EINVAL;
478
479 zap_page_range(vma, start, end - start, NULL);
14#include <linux/hugetlb.h>
15#include <linux/falloc.h>
16#include <linux/sched.h>
17#include <linux/ksm.h>
18#include <linux/fs.h>
19#include <linux/file.h>
20#include <linux/blkdev.h>
21#include <linux/backing-dev.h>

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473 struct vm_area_struct **prev,
474 unsigned long start, unsigned long end)
475{
476 *prev = vma;
477 if (vma->vm_flags & (VM_LOCKED|VM_HUGETLB|VM_PFNMAP))
478 return -EINVAL;
479
480 zap_page_range(vma, start, end - start, NULL);
481 madvise_userfault_dontneed(vma, prev, start, end);
480 return 0;
481}
482
483/*
484 * Application wants to free up the pages and associated backing store.
485 * This is effectively punching a hole into the middle of a file.
486 */
487static long madvise_remove(struct vm_area_struct *vma,

--- 283 unchanged lines hidden --- 		482 return 0;
483}
484
485/*
486 * Application wants to free up the pages and associated backing store.
487 * This is effectively punching a hole into the middle of a file.
488 */
489static long madvise_remove(struct vm_area_struct *vma,

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