On Thu, 17 Jul 2014 14:46:49 -0400 j.glisse@xxxxxxxxx wrote: > New user of the mmu_notifier interface need to lookup vma in order to > perform the invalidation operation. Instead of redoing a vma lookup > inside the callback just pass through the vma from the call site where > it is already available. Well.. what's wrong with performing the vma lookup within the callback? Is it a correctness thing? Deadlock avoidance, for example? Or is it a performance thing? If so, that's a bit surprising - please provide details? -- 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/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>