From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753695AbdF2PXW (ORCPT ); Thu, 29 Jun 2017 11:23:22 -0400 Received: from mail.kernel.org ([198.145.29.99]:46452 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753664AbdF2PXN (ORCPT ); Thu, 29 Jun 2017 11:23:13 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C207322B5F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=chao@kernel.org From: Chao Yu To: jaegeuk@kernel.org Cc: linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, Chao Yu Subject: [PATCH 1/2] f2fs: skip ->writepages for {mete,node}_inode during recovery Date: Thu, 29 Jun 2017 23:20:45 +0800 Message-Id: <20170629152046.2610-1-chao@kernel.org> X-Mailer: git-send-email 2.13.0.90.g1eb437020 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Chao Yu Skip ->writepages in prior to ->writepage for {meta,node}_inode during recovery, hence unneeded loop in ->writepages can be avoided. Moreover, check SBI_POR_DOING earlier while writebacking pages. Signed-off-by: Chao Yu --- fs/f2fs/checkpoint.c | 3 +++ fs/f2fs/data.c | 13 +++++++------ fs/f2fs/node.c | 3 +++ 3 files changed, 13 insertions(+), 6 deletions(-) diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index 12559a4b6c24..954917d582f8 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -269,6 +269,9 @@ static int f2fs_write_meta_pages(struct address_space *mapping, struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); long diff, written; + if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) + goto skip_write; + /* collect a number of dirty meta pages and write together */ if (wbc->for_kupdate || get_pages(sbi, F2FS_DIRTY_META) < nr_pages_to_skip(sbi, META)) diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 9141bd19a902..d58b81213a86 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -1493,6 +1493,9 @@ static int __write_data_page(struct page *page, bool *submitted, trace_f2fs_writepage(page, DATA); + if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) + goto redirty_out; + if (page->index < end_index) goto write; @@ -1506,8 +1509,6 @@ static int __write_data_page(struct page *page, bool *submitted, zero_user_segment(page, offset, PAGE_SIZE); write: - if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) - goto redirty_out; if (f2fs_is_drop_cache(inode)) goto out; /* we should not write 0'th page having journal header */ @@ -1755,6 +1756,10 @@ static int f2fs_write_data_pages(struct address_space *mapping, if (!get_dirty_pages(inode) && wbc->sync_mode == WB_SYNC_NONE) return 0; + /* during POR, we don't need to trigger writepage at all. */ + if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) + goto skip_write; + if (S_ISDIR(inode->i_mode) && wbc->sync_mode == WB_SYNC_NONE && get_dirty_pages(inode) < nr_pages_to_skip(sbi, DATA) && available_free_memory(sbi, DIRTY_DENTS)) @@ -1764,10 +1769,6 @@ static int f2fs_write_data_pages(struct address_space *mapping, if (is_inode_flag_set(inode, FI_DO_DEFRAG)) goto skip_write; - /* during POR, we don't need to trigger writepage at all. */ - if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) - goto skip_write; - trace_f2fs_writepages(mapping->host, wbc, DATA); /* to avoid spliting IOs due to mixed WB_SYNC_ALL and WB_SYNC_NONE */ diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index f6f46be139f4..fd57ffd88508 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -1687,6 +1687,9 @@ static int f2fs_write_node_pages(struct address_space *mapping, struct blk_plug plug; long diff; + if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING))) + goto skip_write; + /* balancing f2fs's metadata in background */ f2fs_balance_fs_bg(sbi); -- 2.13.0.90.g1eb437020