From: "Kirill A. Shutemov" Subject: [PATCHv1, RFC 16/33] filemap: handle huge pages in filemap_fdatawait_range() Date: Tue, 26 Jul 2016 03:35:18 +0300 Message-ID: <1469493335-3622-17-git-send-email-kirill.shutemov@linux.intel.com> References: <1469493335-3622-1-git-send-email-kirill.shutemov@linux.intel.com> Cc: Alexander Viro , Hugh Dickins , Andrea Arcangeli , Andrew Morton , 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" To: "Theodore Ts'o" , Andreas Dilger , Jan Kara Return-path: In-Reply-To: <1469493335-3622-1-git-send-email-kirill.shutemov@linux.intel.com> Sender: owner-linux-mm@kvack.org List-Id: linux-ext4.vger.kernel.org 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 ad73b99c5ba7..3d46db277e73 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -371,9 +371,14 @@ 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(); -- 2.8.1 -- 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