On Wed, Dec 15, 2021 at 05:53:39PM +0530, Charan Teja Reddy wrote: > The documentation of isolate_lru_page() says that, "it must be called > with an elevated refcount on the page", which is not followed while > isolating pages in process_madvise() system call with advise > MADV_PAGEOUT. Fix it. We hold the mmap_lock over the call to this function, so the reference to the page from the page tables cannot go away. There's no need to grab an extra reference here.
