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ksm: add cond_resched() to the rmap_walks

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While at it add it to the file and anon walks too.

Signed-off-by: Andrea Arcangeli <[email protected]>
Acked-by: Hugh Dickins <[email protected]>
Cc: Petr Holasek <[email protected]>
Acked-by: Davidlohr Bueso <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Andrea Arcangeli 2015-11-05 18:49:07 -08:00 • committed by Linus Torvalds
commit ad12695f17
2 changed files with 6 additions and 0 deletions
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2
mm/ksm.c
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@ -1914,9 +1914,11 @@ 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)