From d1b0a703d2be65dae47e496f986cf4494b06710f Mon Sep 17 00:00:00 2001 From: Pavel Emelyanov Date: Thu, 23 May 2013 10:37:06 +1000 Subject: [PATCH] clear_refs: introduce private struct for mm_walk In the next patch the clear-refs-type will be required in clear_refs_pte_range funciton, so prepare the walk->private to carry this info. Signed-off-by: Pavel Emelyanov Cc: Matt Mackall Cc: Xiao Guangrong Cc: Glauber Costa Cc: Marcelo Tosatti Cc: KOSAKI Motohiro Signed-off-by: Andrew Morton --- fs/proc/task_mmu.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index dad0809db551..ef6f6c62dfee 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -695,10 +695,15 @@ enum clear_refs_types { CLEAR_REFS_LAST, }; +struct clear_refs_private { + struct vm_area_struct *vma; +}; + static int clear_refs_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end, struct mm_walk *walk) { - struct vm_area_struct *vma = walk->private; + struct clear_refs_private *cp = walk->private; + struct vm_area_struct *vma = cp->vma; pte_t *pte, ptent; spinlock_t *ptl; struct page *page; @@ -753,13 +758,16 @@ static ssize_t clear_refs_write(struct file *file, const char __user *buf, return -ESRCH; mm = get_task_mm(task); if (mm) { + struct clear_refs_private cp = { + }; struct mm_walk clear_refs_walk = { .pmd_entry = clear_refs_pte_range, .mm = mm, + .private = &cp, }; down_read(&mm->mmap_sem); for (vma = mm->mmap; vma; vma = vma->vm_next) { - clear_refs_walk.private = vma; + cp.vma = vma; if (is_vm_hugetlb_page(vma)) continue; /* -- 2.39.5