From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.kernel.org ([198.145.29.136]:37560 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753771AbdCFVvk (ORCPT ); Mon, 6 Mar 2017 16:51:40 -0500 From: Jaegeuk Kim To: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Cc: Jaegeuk Kim Subject: [PATCH 2/2] f2fs: don't overwrite node block by SSR Date: Mon, 6 Mar 2017 13:51:02 -0800 Message-Id: <20170306215102.3807-2-jaegeuk@kernel.org> In-Reply-To: <20170306215102.3807-1-jaegeuk@kernel.org> References: <20170306215102.3807-1-jaegeuk@kernel.org> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: This patch fixes that SSR can overwrite previous warm node block consisting of a node chain since the last checkpoint. Fixes: 5b6c6be2d878 ("f2fs: use SSR for warm node as well") Signed-off-by: Jaegeuk Kim --- fs/f2fs/segment.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 2ae36d04d03e..684b869e1861 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -1177,6 +1177,12 @@ static void update_sit_entry(struct f2fs_sb_info *sbi, block_t blkaddr, int del) if (f2fs_discard_en(sbi) && !f2fs_test_and_set_bit(offset, se->discard_map)) sbi->discard_blks--; + + /* don't overwrite by SSR to keep node chain */ + if (se->type == CURSEG_WARM_NODE) { + if (!f2fs_test_and_set_bit(offset, se->ckpt_valid_map)) + se->ckpt_valid_blocks++; + } } else { if (!f2fs_test_and_clear_bit(offset, se->cur_valid_map)) { #ifdef CONFIG_F2FS_CHECK_FS -- 2.11.0