From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-f69.google.com (mail-wm0-f69.google.com [74.125.82.69]) by kanga.kvack.org (Postfix) with ESMTP id 203E16B02FA for ; Thu, 1 Jun 2017 05:33:17 -0400 (EDT) Received: by mail-wm0-f69.google.com with SMTP id g15so8664835wmc.8 for ; Thu, 01 Jun 2017 02:33:17 -0700 (PDT) Received: from mx1.suse.de (mx2.suse.de. [195.135.220.15]) by mx.google.com with ESMTPS id 30si2784914wri.162.2017.06.01.02.33.15 for (version=TLS1 cipher=AES128-SHA bits=128/128); Thu, 01 Jun 2017 02:33:15 -0700 (PDT) From: Jan Kara Subject: [PATCH 11/35] hugetlbfs: Use pagevec_lookup_range() in remove_inode_hugepages() Date: Thu, 1 Jun 2017 11:32:21 +0200 Message-Id: <20170601093245.29238-12-jack@suse.cz> In-Reply-To: <20170601093245.29238-1-jack@suse.cz> References: <20170601093245.29238-1-jack@suse.cz> Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org Cc: Hugh Dickins , David Howells , linux-afs@lists.infradead.org, Ryusuke Konishi , linux-nilfs@vger.kernel.org, Bob Peterson , cluster-devel@redhat.com, Jaegeuk Kim , linux-f2fs-devel@lists.sourceforge.net, tytso@mit.edu, linux-ext4@vger.kernel.org, Ilya Dryomov , "Yan, Zheng" , ceph-devel@vger.kernel.org, linux-btrfs@vger.kernel.org, David Sterba , "Darrick J . Wong" , linux-xfs@vger.kernel.org, Nadia Yvette Chambers , Jan Kara We want only pages from given range in remove_inode_hugepages(). Use pagevec_lookup_range() instead of pagevec_lookup(). CC: Nadia Yvette Chambers Signed-off-by: Jan Kara --- fs/hugetlbfs/inode.c | 18 ++---------------- 1 file changed, 2 insertions(+), 16 deletions(-) diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index 372fc8aac38e..99885f9b9d56 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -403,7 +403,6 @@ static void remove_inode_hugepages(struct inode *inode, loff_t lstart, struct pagevec pvec; pgoff_t next, index; int i, freed = 0; - long lookup_nr = PAGEVEC_SIZE; bool truncate_op = (lend == LLONG_MAX); memset(&pseudo_vma, 0, sizeof(struct vm_area_struct)); @@ -412,30 +411,17 @@ static void remove_inode_hugepages(struct inode *inode, loff_t lstart, next = start; while (next < end) { /* - * Don't grab more pages than the number left in the range. - */ - if (end - next < lookup_nr) - lookup_nr = end - next; - - /* * When no more pages are found, we are done. */ - if (!pagevec_lookup(&pvec, mapping, &next, lookup_nr)) + if (!pagevec_lookup_range(&pvec, mapping, &next, end - 1, + PAGEVEC_SIZE)) break; for (i = 0; i < pagevec_count(&pvec); ++i) { struct page *page = pvec.pages[i]; u32 hash; - /* - * The page (index) could be beyond end. This is - * only possible in the punch hole case as end is - * max page offset in the truncate case. - */ index = page->index; - if (index >= end) - break; - hash = hugetlb_fault_mutex_hash(h, current->mm, &pseudo_vma, mapping, index, 0); -- 2.12.3 -- 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