Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> writes: > On Mon, 8 Jun 2009, Al Viro wrote: >> >> Sure, even though I'm not at all certain that copy_from_user() is that easy. >> We can make locking current->mm in there interruptible, all right, but that's >> only a part of the answer - even aside of the allocations, we'd need vma >> ->fault() interruptible as well, which leads to interruptible instances of >> ->readpage(), with all the fun _that_ would be. > > We already have all that - the NFS people wanted it. > > More importantly, you don't actually need to interrupt readpage itself - > you just need to stop _waiting_ on it. So in your fault handler, just stop > waiting, and instead just return FAULT_RETRY or whatever. That sounds doable. Has that code been merged yet? I took a quick look and it didn't see anyone breaking out of page fault with a signal or code to really handle that. Eric -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
