From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx200.postini.com [74.125.245.200]) by kanga.kvack.org (Postfix) with SMTP id 2CD946B0002 for ; Mon, 4 Mar 2013 07:47:33 -0500 (EST) Received: by mail-ob0-f169.google.com with SMTP id ta14so1869589obb.14 for ; Mon, 04 Mar 2013 04:47:32 -0800 (PST) MIME-Version: 1.0 Date: Mon, 4 Mar 2013 20:47:31 +0800 Message-ID: Subject: [PATCH resend] rmap: recompute pgoff for unmapping huge page From: Hillf Danton Content-Type: text/plain; charset=UTF-8 Sender: owner-linux-mm@kvack.org List-ID: To: Linux-MM Cc: LKML , Michal Hocko , Michel Lespinasse , Andrew Morton , Hillf Danton [Resend due to error in delivering to linux-kernel@vger.kernel.org, caused probably by the rich format provided by the mail agent by default.] We have to recompute pgoff if the given page is huge, since result based on HPAGE_SIZE is not approapriate for scanning the vma interval tree, as shown by commit 36e4f20af833(hugetlb: do not use vma_hugecache_offset() for vma_prio_tree_foreach) Signed-off-by: Hillf Danton --- --- a/mm/rmap.c Mon Mar 4 20:00:00 2013 +++ b/mm/rmap.c Mon Mar 4 20:02:16 2013 @@ -1513,6 +1513,9 @@ static int try_to_unmap_file(struct page unsigned long max_nl_size = 0; unsigned int mapcount; + if (PageHuge(page)) + pgoff = page->index << compound_order(page); + mutex_lock(&mapping->i_mmap_mutex); vma_interval_tree_foreach(vma, &mapping->i_mmap, pgoff, pgoff) { unsigned long address = vma_address(page, vma); -- -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org