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mm: __tlb_remove_page() check the correct batch

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__tlb_remove_page() switches to a new batch page, but still checks space
in the old batch.  This check always fails, and causes a forced tlb flush.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Shaohua Li 2011-07-08 15:39:41 -07:00 committed by Linus Torvalds
parent 215ddd6664
commit 0b43c3aab0
1 changed files with 1 additions and 0 deletions
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mm/memory.c
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@ -305,6 +305,7 @@ int __tlb_remove_page(struct mmu_gather *tlb, struct page *page)
if (batch->nr == batch->max) {
if (!tlb_next_batch(tlb))
return 0;
batch = tlb->active;
}
VM_BUG_ON(batch->nr > batch->max);