[patch]mm: __tlb_remove_page checks correct batch

[Shaohua Li <shaohua.li@xxxxxxxxx>]

__tlb_remove_page switchs to a new batch page, but still checks space in the
old batch. This check always fails, and causes force tlb flush.

Signed-off-by: Shaohua Li <shaohua.li@xxxxxxxxx>

diff --git a/mm/memory.c b/mm/memory.c
index 40b7531..9b8a01d 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -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);
 


--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>