diff options
| author |   Peter Zijlstra <a.p.zijlstra@chello.nl> | 2012-11-19 03:14:23 +0100 |
|---|---|---|
| committer |   Mel Gorman <mgorman@suse.de> | 2012-12-11 14:28:34 +0000 |
| commit | 7da4d641c58d201c3cc1835c05ca1a7fa26f0856 (patch) | |
| tree | bf40cc40433383ee94559ea2ef19a282dead358f /include/linux/mm.h | |
| parent | mm: Check if PTE is already allocated during page fault (diff) | |
| download | linux-dev-7da4d641c58d201c3cc1835c05ca1a7fa26f0856.tar.xz linux-dev-7da4d641c58d201c3cc1835c05ca1a7fa26f0856.zip | |
mm: Count the number of pages affected in change_protection()
This will be used for three kinds of purposes:
- to optimize mprotect()
- to speed up working set scanning for working set areas that
have not been touched
- to more accurately scan per real working set
No change in functionality from this patch.
Suggested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Hugh Dickins <hughd@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/mm.h')
| -rw-r--r-- | include/linux/mm.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index bcaab4e6fe91..1856c62d82cd 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1078,6 +1078,9 @@ extern unsigned long move_page_tables(struct vm_area_struct *vma, extern unsigned long do_mremap(unsigned long addr, unsigned long old_len, unsigned long new_len, unsigned long flags, unsigned long new_addr); +extern unsigned long change_protection(struct vm_area_struct *vma, unsigned long start, + unsigned long end, pgprot_t newprot, + int dirty_accountable); extern int mprotect_fixup(struct vm_area_struct *vma, struct vm_area_struct **pprev, unsigned long start, unsigned long end, unsigned long newflags); |