Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965755AbcJYAPY (ORCPT ); Mon, 24 Oct 2016 20:15:24 -0400 Received: from mga05.intel.com ([192.55.52.43]:4050 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965615AbcJYAPV (ORCPT ); Mon, 24 Oct 2016 20:15:21 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.31,543,1473145200"; d="scan'208";a="183373738" From: "Kirill A. Shutemov" To: "Theodore Ts'o" , Andreas Dilger , Jan Kara , Andrew Morton Cc: Alexander Viro , Hugh Dickins , Andrea Arcangeli , Dave Hansen , Vlastimil Babka , Matthew Wilcox , Ross Zwisler , linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-block@vger.kernel.org, "Kirill A. Shutemov" Subject: [PATCHv4 16/43] filemap: handle huge pages in filemap_fdatawait_range() Date: Tue, 25 Oct 2016 03:13:15 +0300 Message-Id: <20161025001342.76126-17-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20161025001342.76126-1-kirill.shutemov@linux.intel.com> References: <20161025001342.76126-1-kirill.shutemov@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 720 Lines: 28 We writeback whole huge page a time. Signed-off-by: Kirill A. Shutemov --- mm/filemap.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/mm/filemap.c b/mm/filemap.c index 954720092cf8..ecf5c2dba3fb 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -509,9 +509,14 @@ static int __filemap_fdatawait_range(struct address_space *mapping, if (page->index > end) continue; + page = compound_head(page); wait_on_page_writeback(page); if (TestClearPageError(page)) ret = -EIO; + if (PageTransHuge(page)) { + index = page->index + HPAGE_PMD_NR; + i += index - pvec.pages[i]->index - 1; + } } pagevec_release(&pvec); cond_resched(); -- 2.9.3