While at it add it to the file and anon walks too.
Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx>
---
mm/ksm.c | 2 ++
mm/rmap.c | 4 ++++
2 files changed, 6 insertions(+)
diff --git a/mm/ksm.c b/mm/ksm.c
index 8fc6793..39ef485 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -1961,9 +1961,11 @@ again:
struct anon_vma_chain *vmac;
struct vm_area_struct *vma;
+ cond_resched();
anon_vma_lock_read(anon_vma);
anon_vma_interval_tree_foreach(vmac, &anon_vma->rb_root,
0, ULONG_MAX) {
+ cond_resched();
vma = vmac->vma;
if (rmap_item->address < vma->vm_start ||
rmap_item->address >= vma->vm_end)
diff --git a/mm/rmap.c b/mm/rmap.c
index f5b5c1f..b949778 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -1607,6 +1607,8 @@ static int rmap_walk_anon(struct page *page, struct rmap_walk_control *rwc)
struct vm_area_struct *vma = avc->vma;
unsigned long address = vma_address(page, vma);
+ cond_resched();
+
if (rwc->invalid_vma && rwc->invalid_vma(vma, rwc->arg))
continue;
@@ -1656,6 +1658,8 @@ static int rmap_walk_file(struct page *page, struct rmap_walk_control *rwc)
vma_interval_tree_foreach(vma, &mapping->i_mmap, pgoff, pgoff) {
unsigned long address = vma_address(page, vma);
+ cond_resched();
+
if (rwc->invalid_vma && rwc->invalid_vma(vma, rwc->arg))
continue;
--
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